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Old December 16th, 2011, 12:21 AM   #1 (permalink)
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Exclamation **Bootlooping Network Problem FIX INSIDE**

Short answer:
1.) Take back cover off; boot up phone
2.) in dialer, put in *#*#4636#*#*
3.) hit Phone Info
4.) Set dropdown to CDMA EVDO/LTE - Auto

I posted this on XDA right now because I just ran into this error, but here's my entire post, with the fix included, for anyone who when they just reset their phone, it began to bootloop (or load up to sense for 1 second, then reset itself every single time with the battery cover on):

i had no problems. NONE.

i decided to do a fresh restart of my phone so i poewred it down, and did a battery pull after the phone was completely off. turned it back on, gets to lock screen, i unlock......sits..loading...screen goes black, and whattya know, white HTC splash screen. a few times. it's *** **** bootlooping FOR NO REASON. this is just absolutely wonderful!!!!!!!!!!


i think it lasted longer without the cover on the back, meaning theres something up with the network....i remember reading about this, it bootlooped with the back cover ON...anyone remember hearing that too?





EDIT* this WORKED! anyone who has this issue please do the following: (source http://www.droidforums.net/forum/htc...boot-loop.html)

STEP 1: TAKE BACK COVER OFF. it will load into sense and not reboot now.

*#*#4636#*#* Under phone info you will find that the network is factory set to WCDMA Preferred... I guess the SIM card decides sometime along the way that it doesn't like that much... Setting the network to CDMA EVDO/LTE - Auto completely corrects the problem


another poster said that after you do this, hit home, power down the phone, pull sim card out, put it back in, then reset it. i didn't do this; i just went back, put the battery cover on, it froze like usual, reset itself, and now it's working perfectly. holy hell this g*d d*mn phone just gave me a heart attack!

for some reason, this is what happens: under phone info, as it says, it will reset to WCDMA Preferred for NO reason whatsoever! this must have happened when i shut my phone down; other people are reporting that doing "reboot" does this frequently for them! this is the first time in my month of ownership i saw this happen, so this was new to me...but thankfully, we have a fix!
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Old December 16th, 2011, 12:44 PM   #2 (permalink)
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Quote:
Originally Posted by jayochs View Post
I posted this on XDA right now because I just ran into this error, but here's my entire post, with the fix included, for anyone who when they just reset their phone, it began to bootloop (or load up to sense for 1 second, then reset itself every single time with the battery cover on):

i had no problems. NONE.

i decided to do a fresh restart of my phone so i poewred it down, and did a battery pull after the phone was completely off. turned it back on, gets to lock screen, i unlock......sits..loading...screen goes black, and whattya know, white HTC splash screen. a few times. it's god damn bootlooping FOR NO REASON. this is just absolutely wonderful!!!!!!!!!!


i think it lasted longer without the cover on the back, meaning theres something up with the network....i remember reading about this, it bootlooped with the back cover ON...anyone remember hearing that too?





EDIT* this WORKED! anyone who has this issue please do the following: (source http://www.droidforums.net/forum/htc...boot-loop.html)

*#*#4636#*#* Under phone info you will find that the network is factory set to WCDMA Preferred... I guess the SIM card decides sometime along the way that it doesn't like that much... Setting the network to CDMA EVDO/LTE - Auto completely corrects the problem

another poster said that after you do this, hit home, power down the phone, pull sim card out, put it back in, then reset it. i didn't do this; i just went back, put the battery cover on, it froze like usual, reset itself, and now it's working perfectly. holy hell this god damn phone just gave me a heart attack!

for some reason, this is what happens: under phone info, as it says, it will reset to WCDMA Preferred for NO reason whatsoever! this must have happened when i shut my phone down; other people are reporting that doing "reboot" does this frequently for them! this is the first time in my month of ownership i saw this happen, so this was new to me...but thankfully, we have a fix!
I also had the boot loop problem with this information set to CDMA auto (PRL)...
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Old December 16th, 2011, 06:37 PM   #3 (permalink)
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weird! this fixed it for me, though, and a few others. hmm.

there's more than1 reason for a bootloop obv lol but atleast now you can check to see if THIS is the cause, ya kno?
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Old December 16th, 2011, 08:26 PM   #4 (permalink)
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weird! this fixed it for me, though, and a few others. hmm.

there's more than1 reason for a bootloop obv lol but atleast now you can check to see if THIS is the cause, ya kno?

True! And I should have been more clear...using the CDMA/LTE option i have NOT had this problem. I think that either CDMA option mite cause problems for me, I dont think my particular phone likes 3g!
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Old December 17th, 2011, 06:55 AM   #5 (permalink)
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HA!

You solved my problem. My first rezound had other issues, they swapped it and everything was working fine. Then the "bootlooping" started, which I mistook as my phone taking a giant crap. The fix worked perfectly! Thanks for sharing...
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Old December 17th, 2011, 08:19 AM   #6 (permalink)
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believe me, i almost had a heart attack when this happened to mine. seriously. i didn't know what to do lol
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Old December 17th, 2011, 11:15 AM   #7 (permalink)
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The phone automatically goes into cdma only when the power setting is set to economy, and will not go back unless change manually.
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Old December 18th, 2011, 02:23 PM   #8 (permalink)
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yeah, this is diffferent. WCDMA is another setting that's only found in that secret menu. when set to WCDMA, the phone will not power up. i've got mine set to CDMA only in the normal settings menu.
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Old December 18th, 2011, 02:39 PM   #9 (permalink)
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(Wideband Code Division Multiple Access)

Wideband CDMA is a third-generation (3G) wireless standard which utilizes one 5 MHz channel for both voice and data, initially offering data speeds up to 384 Kbps. WCDMA is the 3G technology used in the US by AT&T and T-Mobile

I'm guessing there's no hardware in the phone to support this setting. Not sure why they would include this setting as well as the World setting on the phone. Someone should try throwing an AT&T or T-mobile SIM card and report back.
 
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Old December 20th, 2011, 10:43 AM   #10 (permalink)
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Hey guys...Just had the boot loop issue start last night and wanted to weigh in with my thoughts. I pulled the sim card and did the "*#" thing and all seemed to work. I was set to WCDMA PREFERRED, and as soon as I set it back to auto, everything was good to go. The one thing I did different yesterday was use data while talking on the phone. I was set to CDMA only when I did this. The phone worked fine the rest of the night, but as soon as I switched batteries, it went into boot loop. My theory is that as soon as we try and do simultaneous data/talk on 3g, it changes the setting to WCDMA PREFERRED. Then when you try to reboot the phone, the Sim card doesn't recognize this. I'm curious to know if anyone else was doing data/talk before they went into boot loop.
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Old December 21st, 2011, 12:20 AM   #11 (permalink)
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nope. i didn't take any calls during that period before I rebooted. i turned it off, pulled the battery out, put it back in, restarted it and I looped.
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Old December 21st, 2011, 07:10 AM   #12 (permalink)
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Hey guys...Just had the boot loop issue start last night and wanted to weigh in with my thoughts. I pulled the sim card and did the "*#" thing and all seemed to work. I was set to WCDMA PREFERRED, and as soon as I set it back to auto, everything was good to go. The one thing I did different yesterday was use data while talking on the phone. I was set to CDMA only when I did this. The phone worked fine the rest of the night, but as soon as I switched batteries, it went into boot loop. My theory is that as soon as we try and do simultaneous data/talk on 3g, it changes the setting to WCDMA PREFERRED. Then when you try to reboot the phone, the Sim card doesn't recognize this. I'm curious to know if anyone else was doing data/talk before they went into boot loop.
Are you a Verizon customer? I am and cant use data and talk at the same time. Are you a root user?
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Old December 21st, 2011, 07:50 AM   #13 (permalink)
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do you have a rezound? or thunderbolt? if so, yes, you can. 3g stays on during a call. htc phones are the only ones that do it.
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Old December 23rd, 2011, 02:19 AM   #14 (permalink)
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do you have a rezound? or thunderbolt? if so, yes, you can. 3g stays on during a call. htc phones are the only ones that do it.
Nice. I had no idea...
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Old January 5th, 2012, 10:10 AM   #15 (permalink)
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How would you get into the dialer when the phone reboots as soon as you get back up.
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Old January 6th, 2012, 08:18 AM   #16 (permalink)
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take the back cover off, that gets no signal
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Old January 6th, 2012, 10:31 AM   #17 (permalink)
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Woke up this morning and my phone was bootlooping.

Did a couple of battery pulls but couldn't remember the process to get into the bootloader page (had a samsung fascinate previously and haven't had to do this with my rezound yet)

After a few battery pulls it wouldn't boot anymore, would just stick on the HTC page. Even when it was booting, as soon as I unlocked to do the steps above, it would shut back down.

Called Verizon and they didn't know how to get into the bootloader, either (!) so they're sending me a new phone.

Just curious if there is anything I can do - especially since I haven't backed up in a while (dumb, I know).

When I click Factory Reset, FastBoot or Recovery in the bootloader the phone simply shuts off.

Any ideas?
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Old January 6th, 2012, 11:13 AM   #18 (permalink)
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I had the exact same problem this morning. The tech had me hold down the down volume rocker when the phone is on the white HTC screen. It then goes to a white screen with little Androids on the bottom. We ended up using the volume rocker to scroll down to Factory Reset and selected it with the power button. The phone is now fresh and working. We'll see what the next few weeks hold! I am considering running through the CDMA process outlined above, even though the phone is working normally now...
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Old January 6th, 2012, 11:22 AM   #19 (permalink)
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Everyone that's boot looping, have you guys tried turning the phone on in safe mode? Try it before restoring the phone (especially if you have a lot of data). Below are some instructions. I haven't tested the instructions yet but I'll try to confirm.


How to Activate Android?s Safe Mode to Get out of a Force Close Loop
 
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Old January 6th, 2012, 12:24 PM   #20 (permalink)
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Update - now my phone won't do anything. Just dead.

I didn't add any new apps, didn't do anything to it at all - just woke up to the bootloop.
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Old January 6th, 2012, 12:52 PM   #21 (permalink)
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Have you removed the battery, the sim card, the SD card and held the power button for about 10 seconds? Once you do that, install the battery, power it up, if it powers up, power it down, remove battery, install the SIM AND the battery, does it power up? Power it down and finally install the Battery, SIM, AND the SD card and see if it powers up.
 
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Old January 6th, 2012, 01:17 PM   #22 (permalink)
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have you guys tried this to fix your boot looping issue?


With the sim card out, go to your dialer and type # *#*4636*#*#, then click on phone settings. Change it to AUTO LTE/CDMA. Then just back out of the menus...
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Old January 6th, 2012, 06:53 PM   #23 (permalink)
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have you guys tried this to fix your boot looping issue?


With the sim card out, go to your dialer and type # *#*4636*#*#, then click on phone settings. Change it to AUTO LTE/CDMA. Then just back out of the menus...
lol yes, that's what this entire thread is about :P
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Old January 6th, 2012, 06:56 PM   #24 (permalink)
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lol yes, that's what this entire thread is about :P


There's a thread that's written a little better here though....
 
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Old January 6th, 2012, 07:10 PM   #25 (permalink)
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lol yes, that's what this entire thread is about :P
yes i realize that. But it seemed the last few people that were having issues didn't try it and/or didn't catch it.
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Old January 6th, 2012, 07:18 PM   #26 (permalink)
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There's a thread that's written a little better here though....
hahaha you're all confusing the hell out of me
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Old January 7th, 2012, 03:37 PM   #27 (permalink)
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Default Won't boot, stuck on "4G Lte" screen *RESOLVED* - see post #8

When I power on my phone it goes to a logo screen "4G Lte" screen and hangs there. Battery pull offers no help.

Any suggestions?

EDIT: sorry for he post, I'll look at a couple of the boot loop threads
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Old January 7th, 2012, 03:47 PM   #28 (permalink)
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When I power on my phone it goes to a logo screen "4G Lte" screen and hangs there. Battery pull offers no help.

Any suggestions?
Lets get a little more information. Root or non-root? When did this behavior start? How long have you had the phone, and was there any change in applications or settings before this started? Was ur battery low when it started? Did u restart the phone manually the first time it hung or did the phone do a random reboot? Lets see if we can figure it out!
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Old January 7th, 2012, 03:55 PM   #29 (permalink)
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The white HTC screen comes up, then the beats logo, then just sits at a black screen with "4G LTE" on it
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Old January 7th, 2012, 04:00 PM   #30 (permalink)
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Originally Posted by Helenoftroy08 View Post
Lets get a little more information. Root or non-root? When did this behavior start? How long have you had the phone, and was there any change in applications or settings before this started? Was ur battery low when it started? Did u restart the phone manually the first time it hung or did the phone do a random reboot? Lets see if we can figure it out!
Ok so its def bootlooping, but the members will need this info at a minimum to try to help with a suggestion because there are so many different reasons for a bootloop. Also were u on 3g or 4g?
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Old January 7th, 2012, 04:05 PM   #31 (permalink)
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Originally Posted by Helenoftroy08 View Post
Lets get a little more information. Root or non-root? When did this behavior start? How long have you had the phone, and was there any change in applications or settings before this started? Was ur battery low when it started? Did u restart the phone manually the first time it hung or did the phone do a random reboot? Lets see if we can figure it out!
Non-root. Started this morning. Updated apps this AM, TuneIn Radio and some other that I can't remember.
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Old January 7th, 2012, 04:07 PM   #32 (permalink)
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Non-root. Started this morning. Updated apps this AM, TuneIn Radio and some other that I can't remember.
So it happened right after?
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Old January 7th, 2012, 04:08 PM   #33 (permalink)
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Ok so its def bootlooping, but the members will need this info at a minimum to try to help with a suggestion because there are so many different reasons for a bootloop. Also were u on 3g or 4g?
3G. Sorry for not having more info. the phone's stock
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Old January 7th, 2012, 04:09 PM   #34 (permalink)
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With the sim card out, go to your dialer and type # *#*4636*#*#, then click on phone settings. Change it to AUTO LTE/CDMA. Then just back out of the menus...

try that. leaving the battery cover off.
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Old January 7th, 2012, 04:11 PM   #35 (permalink)
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[QUOTE=Helenoftroy08;3773171]
Quote:
Originally Posted by hal1 View Post
Non-root. Started this morning. Updated apps this AM, TuneIn Radio and some other that I can't remember.[/QUOTE

So it happened right after?
Had a bad bluetooth connection. Unpaired then re-paired my BT. Powered down, then the best I remember, it didn't st]art up again.

Sorry, it's all a blur to me now

My battery is pretty dead now. I'm going to put it on the charger and come back in a few hours.

Thanks all
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Old January 7th, 2012, 04:16 PM   #36 (permalink)
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I can't get to the dialer to try the "*#*#4636#*#*" thing I've read about
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Old January 7th, 2012, 04:53 PM   #37 (permalink)
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I can't get to the dialer to try the "*#*#4636#*#*" thing I've read about
did you have the sim card out and the battery cover off. when you tried it?
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Old January 7th, 2012, 04:56 PM   #38 (permalink)
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If you are OK with resetting to factory settings at boot up:

HTC Rezound hard reset - PDA Smartphone PNA hard reset soft reset

I tried this and it works. If it continues to loop and since no root was involved, it's a return IMO.
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Old January 7th, 2012, 05:31 PM   #39 (permalink)
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The white HTC screen comes up, then the beats logo, then just sits at a black screen with "4G LTE" on it
I have had a very similar thing happen to me a couple times. My phone also is stock, (not rooted) and with a few apps. (Docs to go, Tapatalk, OI notepad, OI file manager, GPS Status, RealCalc, ConvertPad, Google translate, GasBuddy, Redbox.)

Most recent time this happened, I was using the browser when the device froze. Couldn't get out of it, and the menu button wouldn't respond. So I held the power button down to do a restart. Seemed to take forever to shut down and restart, (which is normally VERY fast.) When it finally restarted, that's when it happened. Hit the power button again to just do a shut down, and then rebooted. Seemed to work OK after that. Been shutting it off every nite ever since.
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Old January 7th, 2012, 05:33 PM   #40 (permalink)
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did you have the sim card out and the battery cover off. when you tried it?

Dont get discouraged Hal. Make sure u followed trophys instructions and had the sim card out. That 3g has caused alot of bootloop issues for rezounds (including mine) and the fix was indeed the sim card method. Try it and report back!
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Old January 7th, 2012, 06:10 PM   #41 (permalink)
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BINGO!

Got to the phone dialer (via sim card out and battery cover off), popped in #*#4636#*# , changed the network setting from WCDMA to AUTO LTE/CDMA - Voila.

What should I do now to help prevent this from happening again? I liked keeping it on CDMA ONLY to preserve battery, but if that's my problem I'll change it.
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Old January 7th, 2012, 06:55 PM   #42 (permalink)
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Mine did the same thing Xmas nite @ 10:30pm EST, had to run over to someone house that had a landline. Of course the lines were extremely busy. Spent @ 45mins with tech rep. Attempted to do a factory reset, etc..... No luck. Your battery is not pulling enough juice to power phone on. Check your indicator lights (red), they probably are not coming on. Luckily I was 3 days within my 30 day extended window that VZ had given us due to the Xmas holiday. I got a brand new phone, not a refurb one, even though she tried to give the spill about mailing me one.......
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Old January 7th, 2012, 08:09 PM   #43 (permalink)
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BINGO!

Got to the phone dialer (via sim card out and battery cover off), popped in #*#4636#*# , changed the network setting from WCDMA to AUTO LTE/CDMA - Voila.

What should I do now to help prevent this from happening again? I liked keeping it on CDMA ONLY to preserve battery, but if that's my problem I'll change it.
i am not sure exactly what causes this to happen. So its hard to say if or what to do to prevent it from happening again. I have seen it more and more recently though.

Since your issue is solved would you mind editing the title of this thread and just add "resolved" to the front of it? to help out others than may come across the same issue. Thanks.
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Old January 7th, 2012, 09:40 PM   #44 (permalink)
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Since trophy's fix was applied to my phone, I have not looped again - it's been over a month..
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Old January 7th, 2012, 10:19 PM   #45 (permalink)
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i am not sure exactly what causes this to happen. So its hard to say if or what to do to prevent it from happening again.
From those with experience, is it safe to say that leaving my phone network as CDMA Auto (Prl) ONLY does not increase the likelyhood of a bootloop?
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Old January 8th, 2012, 03:57 PM   #46 (permalink)
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threads merged and stickied for now....
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Old January 9th, 2012, 07:16 AM   #47 (permalink)
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This worked for me this morning too. Annoying. That said, I changed other settings to force my rez onto the old 3G network (using EVDO only, and no 4G)....so hopefully that didn't cause the looping. Either way, it's operational again. You guys rock.
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Old January 14th, 2012, 10:25 PM   #48 (permalink)
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Wow I almost pooped myself just now. Was worried I'd have to send my baby back to Amazon. Here's what went down for me before it did the bootloop. I had watched Man U destroy Bolton in the second half while at work and forgot to bring my USB cable. After the game I had about 39% battery left. I had 7 hours of work left to go so I setup the ultra power save mode to go into effect when 15% battery was left. The battery made it until 8:45ish (took it off charge in the morning at 6, standard battery) when it died playing music in the car. Got it home, plugged it in, noticed the orange charge light wasn't staying on consistently. Took a shower, hopped in bed and turned the phone on and after the first power down, I was puzzled, after the 5th or 6th I was getting worried, roundabout the 10th I got pissed and hopped on here. Mine was in the WCDMA mode crap. I concur, why have the setting if you're making it for a carrier that won't be using that standard? Thank God for Jayochs and trohpynuts!
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Old January 16th, 2012, 02:30 PM   #49 (permalink)
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Quote:
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With the sim card out, go to your dialer and type # *#*4636*#*#, then click on phone settings. Change it to AUTO LTE/CDMA. Then just back out of the menus...

That sequence of characters did not work on mine, the asterisk has to be first. I also did not pull the SIM card at all.

Regardless, I found having to type all of that in to be unnecessary since the app LTE Switch takes you to the same screen.
https://market.android.com/details?id=com.geoffreybuttercrumbs.lteswitch

BTW- mine started bootlooping after a simple restart. I noticed my stock battery was down lower than I expected and since I know I hadn't restarted my phone in well over week, I restarted. Nothing was wrong nothing was being used, nothing froze.
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Old January 23rd, 2012, 10:41 AM   #50 (permalink)
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Just wanted to say thanks for posting this, I had a minor panic attack this morning when my phone went into a perpetual reboot and I couldn't figure out why. I managed to get it in airplane mode until I located a solution because the reboot was sucking the life out of my battery. Is there a reason why choosing the LTE/CDMA solves the problem? I don't know much about phones so I like to understand something before I do it, but honestly I was so desperate that I just had to try this and it worked! I appreciate those who are technologically adept and can figure these things out for newbies like me. Keep up the good work!
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