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Old January 11th, 2013, 01:36 PM   #1 (permalink)
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Default Wifi Connectivity Problem

Hi everyone, this is my first time posting on any type of board so hopefully I don't do something inadvertently offensive. I am having trouble with my wireless connection at home (more specifically, connecting to my wireless network with my Kindle Fire HD and my Evo 4G LTE). I've included as many details as I could think of, hence the lengthy post. Here goes....


My Android phone and my Kindle Fire HD tablet have suddenly decided that they are not going to connect to my home wireless network. As they both stopped working on the same day, I initially figured something was wrong with the router. However, my laptop is still able to connect to the internet so I ruled that out. Next I figured that, against all odds, both devices had somehow become defective at the same time. However, as they are both able to connect to other networks I’ve also ruled that out.
On the day in question no updates were installed, no configurations were changed, and nothing at all was modified so it’s likely nothing I inadvertently did. I’ve done all the basic recommendations such as restarting the router, restarting the devices, etc. I also took a look at my router’s configuration to make sure everything is the same as before the problem started (which it is). I do not have MAC Filtering enabled, but just for fun I cleared the MAC address list and manually added the MAC addresses for the devices in question. I also (temporarily) disabled the wireless security to see if that helped; it did not.

When I attempt to connect to my wireless network on my phone, it cycles through “Connecting…” “Authenticating…” “Saved, secured with WPA2” on an endless loop. When I attempt to connect to my wireless network on my Kindle Fire HD it cycles through “Authenticating…” “Obtaining IP Address…” “Authentication failed” also on an endless loop. There is one caveat: on both my phone and my tablet, every so often it will say “Connected” for two seconds. This never lasts more than two seconds, though, so it may just be a fluke.

Ordinarily at this point in the game I would just call tech support. However, given that my laptop works on my home network I’m sure AT&T will blame the devices for the problem. Similarly, given that the devices work on every other network but my home network I’m sure Sprint/HTC and Amazon will blame AT&T. Before I attempt to engage these four companies I wanted to see if anyone has any suggestions (other than “buy a new router”, as I know the router is not defective given that it works with my laptop and has worked for months with both of the devices in question – unless the router is selectively malfunctioning). The only thing in common that I can find is that both of the malfunctioning devices run a version of Android whereas my laptop does not. It’s almost as if my router has decided to reject Android OS. I’ve searched the internet for this problem but the closest thing I’ve found is that many people seem to be having connectivity problems with the recent Jelly Bean update, but to my knowledge the Kindle Fire HD uses a modified version of Ice Cream Sandwich (right?) so I’m not sure that this is entirely the same problem. Below are all of the devices in question:


HTC EVO 4G LTE
Android Version 4.1.1
HTC Sense Version 4+

Kindle Fire HD 7”
System Version: 7.2.3

Dell Latitude E5410
Windows 7 Professional 64-bit

AT&T U-Verse
2Wire Gateway
HomePortal 3801HGV

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Old January 13th, 2013, 07:54 AM   #2 (permalink)
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I have had a similar problem but only with the Kindle, not with my phone. I found that turning WiFi off than back on fixed the problem. It has happened several times.
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Old January 13th, 2013, 11:58 AM   #3 (permalink)
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Unfortunately that does not work for me. I've also tried restarting the Kindle, but to no avail.
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Old January 13th, 2013, 02:44 PM   #4 (permalink)
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Unfortunately that does not work for me. I've also tried restarting the Kindle, but to no avail.
would you happen to know if your router is configured to automatically accept a MAC address? if it isnt try changing the encryption to WEP.Then before connecting again long press your network on the kindle and forget network and restart the kindle.
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Old January 13th, 2013, 03:17 PM   #5 (permalink)
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would you happen to know if your router is configured to automatically accept a MAC address? if it isnt try changing the encryption to WEP.Then before connecting again long press your network on the kindle and forget network and restart the kindle.
Thanks for your reply!

As I do not have MAC Filtering enabled (it's an option in the configuration menu) I would assume that it does, but I may be wrong. Either way, the MAC address for my Kindle (and my phone) is on the "Allowed Devices" list.

I did try your suggestion though, just to see if it would work. Regrettably it did not.
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Old January 13th, 2013, 03:53 PM   #6 (permalink)
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Thanks for your reply!

As I do not have MAC Filtering enabled (it's an option in the configuration menu) I would assume that it does, but I may be wrong. Either way, the MAC address for my Kindle (and my phone) is on the "Allowed Devices" list.

I did try your suggestion though, just to see if it would work. Regrettably it did not.
hmm. have you tried any other phone or tablet on the same network ? or have you tried your phone and kindle on someone elses network? lets try and minimize possible faults so we can see what is the root of all this mischief lol
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Old January 13th, 2013, 09:20 PM   #7 (permalink)
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hmm. have you tried any other phone or tablet on the same network ? or have you tried your phone and kindle on someone elses network? lets try and minimize possible faults so we can see what is the root of all this mischief lol

Unfortunately I do not have any other phones or tablets with which to test the connection -- only my laptop (and it works). My phone and my Kindle both work on a nearby university's open network. Because of this I originally suspected something was wrong with my router, but that doesn't explain how my laptop is able to connect to my network. Granted, I am not a very technical person so I am not familiar with the intricacies of wireless networks; there could very well be a simple explanation for all of this with which I am unfamiliar. (Do mobile devices and laptops interact with routers differently? Or what about different operating systems and routers?)

Of course if there is no simple explanation and this puzzle turns out to be too much of a hassle, perhaps the best course of action is to simply call AT&T to see if they will replace the router (all while leaving out the bit about my laptop still working with the router, of course ).
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Old January 14th, 2013, 03:01 PM   #8 (permalink)
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Unfortunately I do not have any other phones or tablets with which to test the connection -- only my laptop (and it works). My phone and my Kindle both work on a nearby university's open network. Because of this I originally suspected something was wrong with my router, but that doesn't explain how my laptop is able to connect to my network. Granted, I am not a very technical person so I am not familiar with the intricacies of wireless networks; there could very well be a simple explanation for all of this with which I am unfamiliar. (Do mobile devices and laptops interact with routers differently? Or what about different operating systems and routers?)

Of course if there is no simple explanation and this puzzle turns out to be too much of a hassle, perhaps the best course of action is to simply call AT&T to see if they will replace the router (all while leaving out the bit about my laptop still working with the router, of course ).
lol I see! im going more towards a problem with the router in this case. if you call the company's tech assistance they might be able to help out. I would give them a call!
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