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Old February 17th, 2010, 03:25 PM   #1 (permalink)
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Default Unable to Scan for Networks

I'm having a strange issue with Wi-Fi on my Samsung Moment (post CL14 update). I don't remember having this issue prior to the update, but I can't say for sure that it was something that started immediately after receiving the update.

Whenever I turn on Wi-Fi, it says "Scanning" for about 5 seconds, then an "Unable to Scan for Networks" window pops up. Sometimes it scans just once, other times it scans 2 or 3 times, but eventually it automatically turns off the wireless.

At first, I thought the problem was caused by a wi-fi toggle widget, so I tried factory resetting the phone to remove all of my downloaded apps, but I had no luck.

My suspicion is that this is a hardware issue, but I'd love to hear if anyone has any ideas, or has experienced something similar.

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Old February 17th, 2010, 03:49 PM   #2 (permalink)
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sounds like a hardware issue, similar issue happened with my laptop once, it knew wifi was on the system but just kept scanning until the error came up. i had a bad wifi-n card. not saying this has to be the case but it does sound like it
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Old May 27th, 2010, 01:08 PM   #3 (permalink)
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I am having the same problem today. Tried restarting the phone. Now taking the battery out and waiting a few minutes.

Wifi turns on for about 15 seconds then turns itself off.



P.S. I do *not* want to do a factory reset again.
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Old May 27th, 2010, 01:23 PM   #4 (permalink)
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Quote:
Originally Posted by unsmart3d View Post
I am having the same problem today. Tried restarting the phone. Now taking the battery out and waiting a few minutes.

Wifi turns on for about 15 seconds then turns itself off.



P.S. I do *not* want to do a factory reset again.
What does it say when it turns on?
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Old May 27th, 2010, 01:31 PM   #5 (permalink)
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Went to check and it turned on just fine now. Go figure.

Didn't work 15 minutes ago after I put the battery back in and turned it on. Will have to monitor this issue closely.
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Old July 29th, 2010, 04:50 PM   #6 (permalink)
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having same issue.....
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Old July 30th, 2010, 08:00 PM   #7 (permalink)
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having same problem.
'unable to scan for networks'... and turns wi-fi off.
it then says 'unable to stop wi-fi'....
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Old August 4th, 2010, 09:12 AM   #8 (permalink)
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I had this issue on the captivate. Resolved after a factory reset. Blech.
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Old August 4th, 2010, 02:58 PM   #9 (permalink)
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I'm having the same issue with Wi-Fi on my Samsung Moment (post CL14 update). I can say for sure that my WiFi work flawless on CL14, then updated to 2.1, then immediately after receiving the update I have no WiFi.

Whenever I turn on WiFi, it says "Scanning", then "Unable to Scan for Networks" window pops up. Sometimes it scans just once, other times it scans 2 or 3 times, but eventually it automatically turns off the wireless.

Another side note is... I have two Samsung Moment, and mine updated to 2.1 fine, but the other phone had the issue after the 2.1 update

Open for suggestions!
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Old August 12th, 2010, 10:12 AM   #10 (permalink)
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I am having same problem on Samsung Captivate AFTER I did the factory reset yesterday. I turn on scanner, and 10 seconds later it turns itself off.
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Old October 16th, 2010, 05:33 PM   #11 (permalink)
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Yeah i have the same problem too, my samsung moment is unable to scan for networks, im almost shure that is a hardware issue =(. when i see the phone´s info, the mac address of the bluethooth is available but the mac of WIFI adapter is NOT AVAILABLE, im sad, but i already disarm the phone and detect some parts, i guess is necessary replace the speaker enclosure that contains a wifi adapter components. the problen is to find this component =(, if anybody knows where to buy it, please tell me.
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Old October 17th, 2010, 03:57 AM   #12 (permalink)
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all i can say is either factory reset or re flash with sprint update tool. some apps can glitch android too, so be-careful what you install.
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Old October 17th, 2010, 07:20 PM   #13 (permalink)
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I had the same problem a couple weeks ago and it turned out that the wifi radio was bad. Got Sprint to replace it.
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Old October 23rd, 2010, 02:24 AM   #14 (permalink)
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The solution is to root the phone and then get to the corupt files and remove them. the phone will recreate the files and then the wifi will work. the unable to scan issue will be gone.

I have posted an article on my site with complete how to instructions.

here is the URL:
Samsung Galaxy S WiFi Issue Fix | BK Integration does IT easy

here are the steps.

1. First root the phone:to do this download the "GTS" (Galaxy S Tweaker) app from the android market place. Open the app and then run step one to install the the root access. the phone will restart.

2. After the restart download the android terminal app the name of the app is "Terminal Emulator"

3. Open the terminal app and then enter these commands.
- su (you will be prompted to give root access)
- cd /
- cd data
- cd wifi
- ls (you should see a file named "bcm_supp.conf"
- mv bcm_supp.conf bcm_supp.conf.bak

4. press the home key
5. power off the phone
6. power on the phone
7. enjoy your wifi again...

I hope that this helps, check out my site for further information.
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Old November 2nd, 2010, 02:24 PM   #15 (permalink)
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Default Thank you Thank you Thank you!!!

Thanks a ton. Solved the problem!
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Old November 3rd, 2010, 06:08 AM   #16 (permalink)
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Default "Unable to Scan for Networks" SOLUTION - WITHOUT ROOTING

**** SOLUTION - WITHOUT ROOTING *****

I searched many forms to solve the "Unable to scan network" issue. All explained how to do it after rooting and I did not want to root my phone.

Yesterday, while playing with the phone and SDK, I could repair it by deleting "bcm_supp.conf" file. This is what I did:

1. Install the SDK -> Android SDK | Android Developers

(make sure the <SDK>/tools path is added to the windows path variable. My Computer -> Properties -> Advanced -> Environment Variables -> System variable -> add the SDK path at the end of Path variable )

2. On your phone, please enable (tick mark) "USB debugging" under "Settings" -> "Applications" -> "Development"

3. Connect your phone using USB to PC/Laptop. Close phone manager application if it comes up on the PC.

4. Run "ddms.bat" from <SDK>/tools directory. The DDMS application will come up and it should readily connect to your phone. (in the main screen, under Name, you should find the phone ID and SW ver. no.)

5. Go to menu Device -> File Explorer. New window will come up.

6. Here go to data -> wifi directory. You will see a file bcm_supp.conf.

7. Though it is not possible to read this file, you should be able to delete it. (at least I could delete it). You can delete the file by selecting it and then pressing red "-" on top left of the window.

8. Now close the DDMS and disconnect the USB. Enable WiFi and scan for networks. The bcm_supp.conf file will get created and you should be able to find the networks.

Please note:
1. Do this on your own risk.
2. All your previous WiFi settings are gone as you delete the file.
3. If you don't know how to install SDK, just google, you will find many forms explaining.
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Old November 10th, 2010, 02:30 PM   #17 (permalink)
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Quote:
Originally Posted by rghv65c View Post
The solution is to root the phone and then get to the corupt files and remove them. the phone will recreate the files and then the wifi will work. the unable to scan issue will be gone.

I have posted an article on my site with complete how to instructions.

here is the URL:
Samsung Galaxy S WiFi Issue Fix | BK Integration does IT easy

here are the steps.

1. First root the phone:to do this download the "GTS" (Galaxy S Tweaker) app from the android market place. Open the app and then run step one to install the the root access. the phone will restart.

2. After the restart download the android terminal app the name of the app is "Terminal Emulator"

3. Open the terminal app and then enter these commands.
- su (you will be prompted to give root access)
- cd /
- cd data
- cd wifi
- ls (you should see a file named "bcm_supp.conf"
- mv bcm_supp.conf bcm_supp.conf.bak

4. press the home key
5. power off the phone
6. power on the phone
7. enjoy your wifi again...

I hope that this helps, check out my site for further information.
1 & 2 were no problem. I was able to confirm that I have access to the root directory through a file explorer app. I can even see /data (not the same as /sdcard/data), but the directory appears empty.

My problem starts with the su command in Terminal Emulator. The response is "su: not found".

Just in case this is relevant - I have a Captivate. Are there additional security barriers put in by AT&T? Any suggestions? Thanks.

Update: I used a different method to root the phone. Now the su command works and I was able to go straight from 4 to 7 without steps 5 and 6. Thanks for giving me my wifi back!
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Old November 27th, 2010, 11:41 PM   #18 (permalink)
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Thank you very much...you saved me a ton of headache and a ton of money in non-wifi usage. worked as advertised. (Now if we could only figure out what causes the corruption in the first place...)
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Old December 9th, 2010, 02:34 PM   #19 (permalink)
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Quote:
Originally Posted by skeerthy View Post
**** SOLUTION - WITHOUT ROOTING *****

I searched many forms to solve the "Unable to scan network" issue. All explained how to do it after rooting and I did not want to root my phone.

Yesterday, while playing with the phone and SDK, I could repair it by deleting "bcm_supp.conf" file. This is what I did:

1. Install the SDK -> Android SDK | Android Developers

(make sure the <SDK>/tools path is added to the windows path variable. My Computer -> Properties -> Advanced -> Environment Variables -> System variable -> add the SDK path at the end of Path variable )

2. On your phone, please enable (tick mark) "USB debugging" under "Settings" -> "Applications" -> "Development"

3. Connect your phone using USB to PC/Laptop. Close phone manager application if it comes up on the PC.

4. Run "ddms.bat" from <SDK>/tools directory. The DDMS application will come up and it should readily connect to your phone. (in the main screen, under Name, you should find the phone ID and SW ver. no.)

5. Go to menu Device -> File Explorer. New window will come up.

6. Here go to data -> wifi directory. You will see a file bcm_supp.conf.

7. Though it is not possible to read this file, you should be able to delete it. (at least I could delete it). You can delete the file by selecting it and then pressing red "-" on top left of the window.

8. Now close the DDMS and disconnect the USB. Enable WiFi and scan for networks. The bcm_supp.conf file will get created and you should be able to find the networks.

Please note:
1. Do this on your own risk.
2. All your previous WiFi settings are gone as you delete the file.
3. If you don't know how to install SDK, just google, you will find many forms explaining.
I HATE THIS PHONE! There is no excuse for all the problems it has. I tried the steps above but when I run DDMS I get the error "Failed to get the adb version: Cannot run program "adb": CreateProcess error=2, The system cannot find the file specified." I have tried installing the SDK on both a Windowx 7 64-bit and XP 32-bit machine. I get the same error on both machines. What could be wrong? I have to get WiFi working but do not want to factory reset my phone. I spent 4 hours getting Google calendar syncing correctly between all my devices and now the WiFi won't work anymore.
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Old December 9th, 2010, 03:41 PM   #20 (permalink)
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@automagrt Have you tried power-off/on the phone?
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Old December 9th, 2010, 03:54 PM   #21 (permalink)
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Yup. One of the first things I tried. I've done it many times since.
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Old December 11th, 2010, 02:07 PM   #22 (permalink)
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Quote:
Originally Posted by skeerthy View Post
**** SOLUTION - WITHOUT ROOTING *****

I searched many forms to solve the "Unable to scan network" issue. All explained how to do it after rooting and I did not want to root my phone.

Yesterday, while playing with the phone and SDK, I could repair it by deleting "bcm_supp.conf" file. This is what I did:

1. Install the SDK -> Android SDK | Android Developers

(make sure the <SDK>/tools path is added to the windows path variable. My Computer -> Properties -> Advanced -> Environment Variables -> System variable -> add the SDK path at the end of Path variable )

2. On your phone, please enable (tick mark) "USB debugging" under "Settings" -> "Applications" -> "Development"

3. Connect your phone using USB to PC/Laptop. Close phone manager application if it comes up on the PC.

4. Run "ddms.bat" from <SDK>/tools directory. The DDMS application will come up and it should readily connect to your phone. (in the main screen, under Name, you should find the phone ID and SW ver. no.)

5. Go to menu Device -> File Explorer. New window will come up.

6. Here go to data -> wifi directory. You will see a file bcm_supp.conf.

7. Though it is not possible to read this file, you should be able to delete it. (at least I could delete it). You can delete the file by selecting it and then pressing red "-" on top left of the window.

8. Now close the DDMS and disconnect the USB. Enable WiFi and scan for networks. The bcm_supp.conf file will get created and you should be able to find the networks.

Please note:
1. Do this on your own risk.
2. All your previous WiFi settings are gone as you delete the file.
3. If you don't know how to install SDK, just google, you will find many forms explaining.
There is an error in this. The Path variable should point to "platform-tools" and not "tools". That's where adb is located. Unfortunately when I click on the + sign next to the data folder it doesn't show me anything. I'm assuming it has to be rooted to see the contents. Guess I'm going to have to end up factory resetting if after all.
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Old December 11th, 2010, 09:02 PM   #23 (permalink)
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Hope factory resetting works. Let us know.
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Old December 11th, 2010, 09:09 PM   #24 (permalink)
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One of mine is unable to locate any networks as well, hard reset of the phone made 0 difference.
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Old December 12th, 2010, 12:07 AM   #25 (permalink)
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Well I ended up rooting it because I did not want to go through the pain of factory resetting. I deleted the bcm_supp.conf file, restarted and it works fine now.
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Old December 15th, 2010, 08:15 PM   #26 (permalink)
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Quote:
Originally Posted by automagrt View Post
Well I ended up rooting it because I did not want to go through the pain of factory resetting. I deleted the bcm_supp.conf file, restarted and it works fine now.
I rooted my Moment as well but there is no /wifi folder within my /data folder in order for me to delete the file specified in this thread. Is it possible it is located somewhere else?
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Old December 16th, 2010, 01:41 AM   #27 (permalink)
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My Samsung Moment finds my router then says obtaning IP address from my router then it keeps say unsucccessful touch to try again and never connects. This is my 2nd moment the first one was Android 1.5 and it locked up flashing it then sprint sent me this one a week ago with the latest android software and it still will not connect wifi. Is it my router maybe i should try it at a wifi hot spot.
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Old December 29th, 2010, 11:50 AM   #28 (permalink)
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Quote:
Originally Posted by skeerthy View Post
**** SOLUTION - WITHOUT ROOTING *****

I searched many forms to solve the "Unable to scan network" issue. All explained how to do it after rooting and I did not want to root my phone.

Yesterday, while playing with the phone and SDK, I could repair it by deleting "bcm_supp.conf" file. This is what I did:

1. Install the SDK -> Android SDK | Android Developers

(make sure the <SDK>/tools path is added to the windows path variable. My Computer -> Properties -> Advanced -> Environment Variables -> System variable -> add the SDK path at the end of Path variable )

2. On your phone, please enable (tick mark) "USB debugging" under "Settings" -> "Applications" -> "Development"

3. Connect your phone using USB to PC/Laptop. Close phone manager application if it comes up on the PC.

4. Run "ddms.bat" from <SDK>/tools directory. The DDMS application will come up and it should readily connect to your phone. (in the main screen, under Name, you should find the phone ID and SW ver. no.)

5. Go to menu Device -> File Explorer. New window will come up.

6. Here go to data -> wifi directory. You will see a file bcm_supp.conf.

7. Though it is not possible to read this file, you should be able to delete it. (at least I could delete it). You can delete the file by selecting it and then pressing red "-" on top left of the window.

8. Now close the DDMS and disconnect the USB. Enable WiFi and scan for networks. The bcm_supp.conf file will get created and you should be able to find the networks.

Please note:
1. Do this on your own risk.
2. All your previous WiFi settings are gone as you delete the file.
3. If you don't know how to install SDK, just google, you will find many forms explaining.
On my Intercept, this process fails at step #4. The DDMS app comes up but does not connect to my phone. Nothing listed under Name.
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Old January 4th, 2011, 03:21 AM   #29 (permalink)
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Default Same problem

Hi,

I had the same problem (Samsung i5800).
New phone, wifi works and after a while when I turned off and on the wifi and I received the same messages.
Went back to the store and received a new phone.
Wifi works but after a while same problem ?!??!
I did a factory reset and the problem was gone, wifi works again.

The only thing I can think of that could cause this is the Samsung Kies software. After I had both phones connected to it, the problem occured.
Kies didn't install any updates (as far as I know).
It can't be that both phones have the same hardware failure, that's why I think it must be the software.
Or it must be one of the apps I installed.

Let me know what you think about this.

Best, Ziggy
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Old January 6th, 2011, 06:36 AM   #30 (permalink)
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I had the same wifi problem on my I5800, did the rooting solution, and it worked!!
Wifi is back!

Thanks for the help guys!

However, I hope samsung does something about it!! It is not normal at all!!
I never use the kies software! The only thing that I changed was on my router the WPA2 key...earlier I always used WPA....
Since I used wpa2, my wifi connection was very very weak, and after a week I had the wifi problem....don't know if it had anything to do with it....just a thought...
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Old January 27th, 2011, 01:44 AM   #31 (permalink)
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I used rghv65c's directions, but it still didn't work for me - YMMV. Here's what I had to enter into the terminal for step 3 (the file's in a different location on the Moment than the Galaxy):
su
cd /
cd data
cd misc (this is the extra step)
cd wifi
ls (you should see a file named "bcm_supp.conf")
rm bcm_supp.conf

I've tried it through the terminal app and the SDK command line...argh, still won't work. Anybody else had better results?
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Old February 17th, 2011, 11:04 PM   #32 (permalink)
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Quote:
Originally Posted by skeerthy View Post
**** SOLUTION - WITHOUT ROOTING *****

I searched many forms to solve the "Unable to scan network" issue. All explained how to do it after rooting and I did not want to root my phone.

Yesterday, while playing with the phone and SDK, I could repair it by deleting "bcm_supp.conf" file. This is what I did:

1. Install the SDK -> Android SDK | Android Developers

(make sure the <SDK>/tools path is added to the windows path variable. My Computer -> Properties -> Advanced -> Environment Variables -> System variable -> add the SDK path at the end of Path variable )

2. On your phone, please enable (tick mark) "USB debugging" under "Settings" -> "Applications" -> "Development"

3. Connect your phone using USB to PC/Laptop. Close phone manager application if it comes up on the PC.

4. Run "ddms.bat" from <SDK>/tools directory. The DDMS application will come up and it should readily connect to your phone. (in the main screen, under Name, you should find the phone ID and SW ver. no.)

5. Go to menu Device -> File Explorer. New window will come up.

6. Here go to data -> wifi directory. You will see a file bcm_supp.conf.

7. Though it is not possible to read this file, you should be able to delete it. (at least I could delete it). You can delete the file by selecting it and then pressing red "-" on top left of the window.

8. Now close the DDMS and disconnect the USB. Enable WiFi and scan for networks. The bcm_supp.conf file will get created and you should be able to find the networks.

Please note:
1. Do this on your own risk.
2. All your previous WiFi settings are gone as you delete the file.
3. If you don't know how to install SDK, just google, you will find many forms explaining.
I have done all of the steps successfully until step 6, at this point I try to click on the data section in the file explorer and it wont expand or do anything really. I can view files in all of the other sections though......urg
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Old February 18th, 2011, 08:54 PM   #33 (permalink)
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I have done all of the steps successfully until step 6, at this point I try to click on the data section in the file explorer and it wont expand or do anything really. I can view files in all of the other sections though......urg
Ok, update. I did figure the process out, I had to root before being able to enter the data folder....not sure why. I did successfully remove the file and rebooted but as soon as I try to enable wifi the same problem occurs and in the same folder reappears the unwanted file......
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Old April 14th, 2011, 10:22 PM   #34 (permalink)
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I had this issue for the last few weeks on my Samsung Captivate. I've used the phone for over 6 months without a problem. I thought it was one of the WI-FI apps on the phone and removed all of them, but this did not resolve the problem. Only after upgrading to Android 2.2 did the problem get resolved.

Make sure you backup your phone before upgrading.

Follow the instructions at http://ars.samsung.com/customer/usa/jsp/faqs/faqs_view_us.jsp?SITE_ID=22&PG_ID=2&PROD_SUB_ID=55 7&PROD_ID=558&AT_ID=304008
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Old June 1st, 2011, 09:17 AM   #35 (permalink)
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reviving this thread as it started happening to me recently.
does anyone know what causes it? was it a bad app that messed something up?

i'm a total noob and don't care to try rooting my phone for the risk that i may mess something up.

would this be considered a hardware issue that may aid me in haggling sprint for a new phone?
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Old June 1st, 2011, 12:21 PM   #36 (permalink)
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Default my SOLUTION: Use Ghost Commander file manager

Step 1: Install Ghost Commander file manager program (available via Marketplace) OR if you cannotr connect to internet as you do this via WiFi (like I do, read the NOTE below)

Step 2: Open Ghost Commander and go to 'root:/data/wifi' folder

Step 3: Rename or Delete 'bcm_supp.conf' file

THAT'S IT! My WiFi is working again. Good luck!

-----------
NOTE for those who cannot install Ghost Commander due to lack of WiFi to connect to MarketPlace via the internet.

Go to: Ghost Commander and click on the 'Downloads' link.

-----------
AN ADDITIONAL NOTE for users with Install Locked phones such as AT&T's Galaxy S. Install via the .

Go to: Settings | Applications | Development | USB Debugging

(this ought to work in general - I have installed other apps this way, not this one as I already had it on my phone)

HOPE THIS HELPS. Of course the normal disclaimers apply. I guarantee nothing, just posting what worked for me.
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Old June 2nd, 2011, 10:13 AM   #37 (permalink)
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Quote:
Originally Posted by nismospec View Post

would this be considered a hardware issue that may aid me in haggling sprint for a new phone?
Yes, It has become a very common problem. Many times, the Sprint tech will "fix it" and within a day or two, it will not work again, and then the phone will be replaced.
So if you don't want to root it or get too "technical" with it, then I'd just start the haggle with Sprint to get a new phone.

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Originally Posted by trinione View Post
Step 1: Install Ghost Commander file manager program (available via Marketplace) OR if you cannotr connect to internet as you do this via WiFi (like I do, read the NOTE below)
I could be wrong, but I thought ghost commander required root access to be able to work?
The general talk on the forums is that This is very similar to what the Sprint tech does when you take the phone in (using a sprint program, not a market app) but for many, it is a temporary fix. Whatever cause that file to become corrupted in the first place is still an issue. So ultimately, most people end up getting their phone replaced.
If it works for you and has continued to work, then awesome. If not, then hit up sprint.
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Old June 30th, 2011, 11:25 AM   #38 (permalink)
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Cool samsung moment network problems

I have the same problem with this phone infact i have had so many problems with this phone like always force closing things and stuff like that but i would reall know what i can do to fix this problem. !
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Old June 30th, 2011, 11:42 AM   #39 (permalink)
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when you system reset did it work?
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Old July 19th, 2011, 10:34 PM   #40 (permalink)
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I had the same problem with my HTC EVO. My workaround is: disable the mobile network. My phone connects to the wifi and then I re-enable the mobile network. Works everytime.
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Old July 20th, 2011, 01:59 PM   #41 (permalink)
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Quote:
Originally Posted by trinione View Post
Step 1: Install Ghost Commander file manager program (available via Marketplace) OR if you cannotr connect to internet as you do this via WiFi (like I do, read the NOTE below)

Step 2: Open Ghost Commander and go to 'root:/data/wifi' folder

Step 3: Rename or Delete 'bcm_supp.conf' file

THAT'S IT! My WiFi is working again. Good luck!
Thank you hugely for this tip. I've been struggling with my Dell Streak to resolve this issue, lots of other suggestions haven't worked (eg using other file explorer apps like ES File Explorer, Dual File Manager; via a terminal emulator which is given SU access; or going into the phone using SDK Manager from the PC) but this one did it.

I rooted the phone using an older version of SuperOneClick, the current version doesn't seem to work with the Streak, you need to go back to a version which uses the rageagainstthecage approach. v1.5.5 I think.

A final quirk for the Streak is that the file you need delete or rename is different to any other information I've seen - it isn't bcm_supp.conf or wpa_supplicant.conf, but simply wpa.conf, and is found in data/misc/wifi on this device.
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Old August 18th, 2011, 01:13 PM   #42 (permalink)
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I had same problem when I tried to connect wifi at a new location. It did not connect first so I tried "Forget" network option and after that my phone was unable to scan for wifi networks. I tried steps you listed above but my "data" folder is empty. I could not find the file so I tried Factory Reset method. It fixed my problem.
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Old August 19th, 2011, 03:33 AM   #43 (permalink)
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Hi

I would like to inform that I have been struggeling with the issue "unable to scan for networks" for some time. Problem is that sometimes a factory reset works, sometimes not. From day to day, its been working, and thes suddently not working.

When not working : 3x "uanble to scan for networks" the wifi shuts off.
Sometimes the phone says "settings not responding", and sends an error report to HTC (I have a Desire HD).

Now I have done numerous factory resets, and installed / uninstalled apps to try and fix issues... no avail....

I sent the phone to the shop the second time, and this time they actually did something (other than factory reset ... blah..).

I've yet to recieve the phone (its in the snail-mail), but the Fault explanation from repair shop : "WiFi antenne loose, fastened ant tested OK" ...

So This may help others with this annoying problem : "Your wifi antenna may be loose".

I really hope that this really IS the source to my problems ...
I'll edit this post if this is is not true ..
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Old September 9th, 2011, 04:42 PM   #44 (permalink)
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Default Wifi: "Unable to Scan for Networks"

Quote:
Originally Posted by regervin View Post
I had the same problem with my HTC EVO. My workaround is: disable the mobile network. My phone connects to the wifi and then I re-enable the mobile network. Works everytime.
This worked for me today.
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Old November 12th, 2011, 10:03 AM   #45 (permalink)
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Quote:
Originally Posted by regervin View Post
I had the same problem with my HTC EVO. My workaround is: disable the mobile network. My phone connects to the wifi and then I re-enable the mobile network. Works everytime.
Thank you so much for posting this! I really didn't want to root my phone and mess it up, nor did I want to take it to Sprint and wait in line for an hour. This worked perfectly for me
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Old November 13th, 2011, 03:34 PM   #46 (permalink)
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Quote:
Originally Posted by regervin View Post
I had the same problem with my HTC EVO. My workaround is: disable the mobile network. My phone connects to the wifi and then I re-enable the mobile network. Works everytime.

Thank you, I too have the HTC EVO and the same problem. Thanks for sharing.
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Old December 10th, 2011, 09:27 PM   #47 (permalink)
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Quote:
Originally Posted by trinione View Post
Step 1: Install Ghost Commander file manager program (available via Marketplace) OR if you cannotr connect to internet as you do this via WiFi (like I do, read the NOTE below)

Step 2: Open Ghost Commander and go to 'root:/data/wifi' folder

Step 3: Rename or Delete 'bcm_supp.conf' file

THAT'S IT! My WiFi is working again. Good luck!

-----------
NOTE for those who cannot install Ghost Commander due to lack of WiFi to connect to MarketPlace via the internet.

Go toand click on the 'Downloads' link.

-----------
.
Thanks so much - worked for me on a GT-I5800

Just wish I'd read this bit first (before I tried rooting, SDK.... etc)
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Old December 13th, 2011, 11:16 AM   #48 (permalink)
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Default Workaround is great! Thanks.

Quote:
Originally Posted by regervin View Post
I had the same problem with my HTC EVO. My workaround is: disable the mobile network. My phone connects to the wifi and then I re-enable the mobile network. Works everytime.
I have done this twice over the last couple of weeks. Have not determined what triggers it, but works great for now.
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Old December 23rd, 2011, 12:57 AM   #49 (permalink)
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Default Problem with the wifi... 7" MID

  • Hi! I have a tablet (7" Android 2.2 Google PC Tablet VIA 8650 epad flash10.1BUILD IN (WIFI) FLASH 4GB RAM 512MB BUILT IN CAMERA) but have a problem with the wifi. When i turn it on this appears "Unable to scan for networks" and then wifi turn off. I read in the forums that i must delete or rename this file "wpa_supplicant.conf". I tried with Super Manager, Ghost Commander and AndExplorer but the file wasn't deleted nor renamed. Somebody to have other ideas?
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Old December 23rd, 2011, 03:08 PM   #50 (permalink)
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Quote:
Originally Posted by ALEX6 View Post
  • Hi! I have a tablet (7" Android 2.2 Google PC Tablet VIA 8650 epad flash10.1BUILD IN (WIFI) FLASH 4GB RAM 512MB BUILT IN CAMERA) but have a problem with the wifi. When i turn it on this appears "Unable to scan for networks" and then wifi turn off. I read in the forums that i must delete or rename this file "wpa_supplicant.conf". I tried with Super Manager, Ghost Commander and AndExplorer but the file wasn't deleted nor renamed. Somebody to have other ideas?
Welcome to the forum.
You need root access to delete this file. Find your device in this list which may be able to help you: Android Tablets & MIDs - Android Forums
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