Develop Bugs

Evo reboots during use

Weird problem, had my Evo for a couple of days now and everything seemed fine for the first day but now when I run certain apps like google maps for pandora my Evo will reboot. This doesn't happen all the time but will eventually happen after an hour or two of usage. I did buy a case for my phone, maybe it's a heat issue?

taziz23 said:
Weird problem, had my Evo for a couple of days now and everything seemed fine for the first day but now when I run certain apps like google maps for pandora my Evo will reboot. This doesn't happen all the time but will eventually happen after an hour or two of usage. I did buy a case for my phone, maybe it's a heat issue?
Click to expand...
Click to collapse
I've had this happen on my hero. It is just clearing memory are you using autokiller ? It started on my hero when using autokiller. It's not a heat issue the led will flash red and green when the phone is hot.

I'm using advanced task killer but I don't think it's set to autokill apps. A hard reset has seemed to fix this issue for now, how do I ensure it doesn't happen again in the future?

It might help to check your preset in autokiller and set to moderate or optimum but some apps use more memory than others so you might see it from time to time. I still use autokiller set on extreme and would only see that once every week or two on the hero. So it's not that big of a deal. You could just uninstall it if it bugs you or to see if it stops. I have not seen it on my evo yet but I am just rooted no custom ROM yet (Waiting for fresh ROM with espresso theme). That might help contribute to it as well.

taziz23, I don't mean to hi-jack your thread but I've been chasing down the cause of random reboots also. I've been searching around for someone with a similar issue and all I've been finding are people talking about the reboot loop caused by an exchange account. I'm not using exchange at the moment so I know that's not what's affecting me.
It sounds similar to what you're talking about. About 30 minutes to an hour apart regardless of whether I'm using the phone or not. It just did it while sitting on the desk next to me with the screen off for at least 15 minutes.
I've hard reset a few times to see if it was related to the OTA, and turns out it happens to both .1 and .6
I've found out that if I don't associate my google account during the initial setup (or any other accounts like facebook, twitter, etc.) it doesn't seem to reboot anymore. Once I do setup an account and set it to auto sync, I start seeing the reboots happening. So I've been playing with different combinations of disabling calendar sync, contacts sync, etc. to narrow it down but so far, I've come up with nothing.
I've even exported my contacts to a .cvs file using my desktop browser and cleaning out any of the <HTCDATA> stuff that links facebook and twitter to make sure nothing is corrupt and reimported them, but as the reboots are still happening, it looks like that might rule out contact corruption.
I had made it through most of Friday before the reboots started. I recall installing the update to Facebook and TasKiller just before it started happening, but have hard reset since then and have not installed either of these again.
Has anyone else seen anything like this?

Two words: Kernel Panic.
Actually, that's just a guess. I'd imagine anything else would cause some kind of error message to show up like a force close for example.
It has happened with my Evo a few times so far. It also happened with my Hero when I use to use that.
It's probably just a module misbehaving which confuses the OS and causes the kernel panic, so I imagine it's nothing more than a software bug.

Yea... I was thinking some KP's might be happening, but if the release build is dated in April, I must have some fluky hardware right?
Maybe I'll run an `adb logcat` and just wait.
I remember the hard crashes on some of the early donut and eclair builds for the Vogue (CDMA Touch) and these are pretty much the same deal. Just drops out and goes straight to the bootsplash.

Regardless of the phone or OS, I've seen this happen on all the phones I've owned. Android is at least open to allow normal people to debug and fix these problems though.

Me too!
I had a seemingly random reboot happen today on my EVO as well... then it happened again.
Both times, I had Waze and Pandora running and was about 30 seconds into a phone call.
Advanced Task Killer is installed, and is set to kill "when screen off".
I'm pretty new to Android based phones, so I'm not even sure where to start with troubleshooting... but found this thread, and thought this info may help.
Krissy
(P.S. I love this phone so much, right now - I don't even care that it has rebooted on me twice in the middle of a phone call... but eventually the honeymoon will be over, and I'll want this figured out. LOL)

I am having an exact same ISSUE i got it from google I/O its just happened suddenly while you are using it I have no Idea .. Search is also not that great .. Platform need lot of work until it get mature .... I was definately enjoying 1st 2 weeks but not anymore its just killing me now ... Issues after Issues so many Bugs I have start noticing now.. I am not complanning but its just not solid they need to fix this asap... I was enjoying Pre it was slow but I like that OS .. not too much buggy... some apps just Crash randomly .. I was huh .. and its doing more and more now ..

After my hard reset a couple of days ago I haven't had any reboots. I do think it was related to the task killer I think it might have caused some data corruption possibly when killing an application. I set the auto killer to safe in the meantime. If it stats happening again I'll try uninstalling the task killer before I hard reset.

I had the same thing happen, but only once. I was using google maps I think. I also have advance task killer installed. Does the ignore list in advance task killer and setting it to auto kill, kill everything except for what's in the ignore list?

I'm not sure but I did notice that most of my reboots were happening when running google maps..

My Evo rebooted most days 4 or 5 times, day or night, in use or not. The store where I purchased it refused to replace it since I couldn't duplicate the problem to the local technical store. They acted like I needed someone to talk to and not like I had a problem needing resolution. After about 20 calls to customer support they told me to return it where I purchased it and they're sending me out a new one. Apparently no one at Sprint has ever heard that there's this issue. Mine was stock. Period.

I have had some reboot issues that I can't explain. I removed Advance Task killer and it seems to happen less frequent. Maybe once every two days, but never during a call. Waiting to see if this stops with Froyo.
Used to have similar, but less frequent, reboot issues and an occasional "frozen" screen with my previous Blackberry 8830.

I've only had it reboot once or maybe twice for no reason but When I use advanced task kill I almost expect it to happen. And I only use it to kill whatever app I was just using and any other ones Ive downloaded that have no business running.

I have had the same issue, only I am using the full version of Memory Booster..I am going to uninstall it and see if that helps, I also notice that my phone was very hot. It rebooted about 3 times before letting me use the phone again.
Any other suggestions?
Sent from my PC36100 using XDA App

Random Restart

So far today, my Evo has reset itself about 4 times. That is within the past hour and a half. I've had it since Monday and had no other issues with it doing this until today. The only app that was added in the past 24hrs was the Wireless Tether for Root app. I don't know what or why this is happening. I've just uninstalled Unrevoked, Superuser Permissions, the Overclock Widget, and the Wireless Tether to see if that is causing the issues. Anyone else have anything similar to this happening?
Also, I changed the "always on mobile data" setting to off yesterday. That increased my battery life dramatically. I was able to leave the phone on for a solid 11hrs with it still having 60% charge left. Then today, before I changed any settings at all, unplugging the phone from the charger for about 2hrs has resulted me in being down to 45% battery. Could mobile data always on being off cause the rebooting issue?

Same thing was happening to me when I unchecked that. Checked it back and all rebooting issues went away.

admorris said:
Same thing was happening to me when I unchecked that. Checked it back and all rebooting issues went away.
Click to expand...
Click to collapse
Since I posted that message I had two more reboots. Just ticked always on mobile data back on and am waiting to see if that stops it...
EDIT: No more reboots since reenabling mobile data always on...weird

I've had the always on data feature turned off since day one to conserve battery life and i had not experienced the random shut offs until yesterday. Since yesterday however my phone has restarted itself no less than 20 times. Several times while I was sleeping so this is defiantly a real problem but I dont think its related to settings. ill be contacting HTC tonight

I have had always data off, ticked it on this morn. And started getting the reset issue...
-------------------------------------
Sent via the XDA Tapatalk App

Random restarts are often indicative of the battery not sitting in properly.
Remove the battery. Scratch up the contacts. Insert back firmly...

I am also having this same issue. I turned my phone off this morning because i wouldn't be using it and then i turned it back on in the afternoon and then my phone just started randomly restarting itself. There is no rhyme or reason to it. It has just been happening all by itself. It has probably happened 10 times in the last 4.5 hours.
I took the battery out for a minute and put it back in to see if it will stop the issue, but i'll have to wait and see. However, when i did turn the phone back on i got a weird pop-up message on the main screen that said something to the effect of, "Operational failure, please use su command." Then it faded away. Anyone know what that means?

As mentioned above, turning always-on mobile back on, took care of my restart issue.

heed316 said:
So far today, my Evo has reset itself about 4 times. That is within the past hour and a half. I've had it since Monday and had no other issues with it doing this until today. The only app that was added in the past 24hrs was the Wireless Tether for Root app. I don't know what or why this is happening. I've just uninstalled Unrevoked, Superuser Permissions, the Overclock Widget, and the Wireless Tether to see if that is causing the issues. Anyone else have anything similar to this happening?
Also, I changed the "always on mobile data" setting to off yesterday. That increased my battery life dramatically. I was able to leave the phone on for a solid 11hrs with it still having 60% charge left. Then today, before I changed any settings at all, unplugging the phone from the charger for about 2hrs has resulted me in being down to 45% battery. Could mobile data always on being off cause the rebooting issue?
Click to expand...
Click to collapse
I'm getting the same issue. At first i thought it was ATK, so i uninstalled that. Then I though it was lookout, so I disabled that. But it still keeps happening. I have mobile data off too, but for days, and it hasn't affected it one way or the other.
The odd thing is, I was running xiiLive Lite last night streaming the radio all night, and my phone stayed up the whole time, while plugged in (at least 8 hours).
I don't know what the deal is, but my phone goes about 24-48 hours without a spontaneous reboot, and then it will start doing it 4-6 times a day. Anyone have a good logging tool would be nice, as I'm somewhat new to Android.
Thanks!
Tigger

tigger2u said:
I'm getting the same issue. At first i thought it was ATK, so i uninstalled that. Then I though it was lookout, so I disabled that. But it still keeps happening. I have mobile data off too, but for days, and it hasn't affected it one way or the other.
The odd thing is, I was running xiiLive Lite last night streaming the radio all night, and my phone stayed up the whole time, while plugged in (at least 8 hours).
I don't know what the deal is, but my phone goes about 24-48 hours without a spontaneous reboot, and then it will start doing it 4-6 times a day. Anyone have a good logging tool would be nice, as I'm somewhat new to Android.
Thanks!
Tigger
Click to expand...
Click to collapse
I had mobile data off for a few days with no reset issues. Then I installed a few apps from the market (not the ones you mentioned) and then the resets started. I uninstalled the newest apps but the resets kept happening. Then I turned mobile data back on and no more resets in the last 24 hours.

my evo is randomly rebooting and I never modified the settings that some of you are talking about. My also gives me random issues where when i try to open an app it will open for a split second and close? I am also having my phone lock up on me several times a day and i have to pull the battery to reboot it! I took it back to the sprint store and they insisted on reloading the software on the phone and it made no difference.... does anyone have any suggestions or similar issues?

rooder said:
my evo is randomly rebooting and I never modified the settings that some of you are talking about. My also gives me random issues where when i try to open an app it will open for a split second and close? I am also having my phone lock up on me several times a day and i have to pull the battery to reboot it! I took it back to the sprint store and they insisted on reloading the software on the phone and it made no difference.... does anyone have any suggestions or similar issues?
Click to expand...
Click to collapse
I had the apps closing after a split sec too but I found out that it was for apps that didn't play nice with the snapdragon cpu; like the Gameloft game Nova and a few of their other titles.

for me its stock apps like the navigator, video player etc. I am thinking i might have a defective unit.

rooder said:
for me its stock apps like the navigator, video player etc. I am thinking i might have a defective unit.
Click to expand...
Click to collapse
Yup! That does sound strange! Did you root your phone? I'm rooted and all the stock apps that I've tried, seem to open and work fine.

nope! not rooted, 100% how it was out of the box. Luckily my pre was still active so i video taped it freezing up and stuff so im going to show the tech at the sprint store so hopefully they can order my replacement.

I also have a fully stock phone, some apps installed, but none recently, and yesterday it rebooted itself, twice more today.
I haven't changed the settings mentioned earlier, and haven't done anything I can think of that would cause the rebooting.
I am also having issues where I can't get an IP address on my wireless network, but I'm not sure it's related. I just noticed these 2 problems in the last 2 days, and it's the only thing I can think of that's out of the ordinary from the weeks prior to this happening.
I think I'll take it to Sprint tomorrow and see what they have to say.

Keep us updated on what happens. It seems to take a day or two for symptoms to start, but when they do it goes crazy rebooting!
...more discussion on this issue has been going on here too: http://forum.xda-developers.com/showthread.php?t=702379

I'm not a professional android user and don't know much about it yet, but mine's rebooted a few times as well. I haven't rooted my phone but the ONE thing that seemed to have resolved the continuing issue is doing a hard reboot:
Menu > Settings > Privacy > Factory data reset
It's been 4 days and hasn't rebooted since.
EDIT: It's been 6 days now and still no reboots.

Angry Apps Eating my RAM!
I think what everyone is missing here that maybe the root of the problem is low memory.
I'm not talking about storage on the SD card. I"m talking about the memory the OS has to run.
I've fought long and hard with this low memory problem seeing as I have owned a g1 for almost 2 years.
THERE IS NO REASON THE EVO SHOULD EVER GET DOWN TO UNDER 30MB OF SYSTEM RAM!
I equate this issue to the same issue many people had with Windows computers and applications that start up in the system tray! We don't need most apps to run in the back ground on start up just in case I want to use it. The few seconds of time it shaves off of starting up the app is not worth the slower OS boot up (applies to Windows mainly) or the major slow downs they cause the OS's to have.
I don't need Sprint TV running on boot!
When I used a clean slate scene I still have all of these same issues. Random reboots, slow OS and apps, ect.
I have no idea why Android would allow that much RAM to be used for background apps. I don't understand why we have no way to see what programs run on boot unless using a 3rd party app.
Most apps are so crappy that they run in the background all the time and have no way to toggle if they run on boot and I'm not talking about apps that modify something all the time I"m talking about apps that ONLY need to be running once you open them. An example would be Swipe, I understand the need for that app to run on boot. It modifies the OS keyboard and would need to be running in order to work correctly when ever you enter any text field that pops up the keyboard for input.
An example of programs that don't need to be running on boot or should at least give you an option to toggle boot start up are; Sprint Navigation, Sprint Updater (No idea what this is for), Updater (Android?), Sprint Zone, doubletwist, SprintTV Widget (I'm on the clean slate profile with NO Widgets), VoiceMail (I use Google Voice, is this needed?), Sprint Football Live (It's not even Football season!), MP3 Store (I have yet to use on the EVO but is running just in case, thx), as well as many others.
I have 35 apps running in the back ground! WTF? Thanks ****ty app devs and bloatware Sprint!
Have fun try to find options for each app and figuring out each service to know what it's tied to so that you can have a phone that it powerful and run smoothly.
It really shouldn't be this hard or as much of a pain...

Reeves360 said:
I think what everyone is missing here that maybe the root of the problem is low memory.
I'm not talking about storage on the SD card. I"m talking about the memory the OS has to run.
I've fought long and hard with this low memory problem seeing as I have owned a g1 for almost 2 years.
THERE IS NO REASON THE EVO SHOULD EVER GET DOWN TO UNDER 30MB OF SYSTEM RAM!
I equate this issue to the same issue many people had with Windows computers and applications that start up in the system tray! We don't need most apps to run in the back ground on start up just in case I want to use it. The few seconds of time it shaves off of starting up the app is not worth the slower OS boot up (applies to Windows mainly) or the major slow downs they cause the OS's to have.
I don't need Sprint TV running on boot!
When I used a clean slate scene I still have all of these same issues. Random reboots, slow OS and apps, ect.
I have no idea why Android would allow that much RAM to be used for background apps. I don't understand why we have no way to see what programs run on boot unless using a 3rd party app.
Most apps are so crappy that they run in the background all the time and have no way to toggle if they run on boot and I'm not talking about apps that modify something all the time I"m talking about apps that ONLY need to be running once you open them. An example would be Swipe, I understand the need for that app to run on boot. It modifies the OS keyboard and would need to be running in order to work correctly when ever you enter any text field that pops up the keyboard for input.
An example of programs that don't need to be running on boot or should at least give you an option to toggle boot start up are; Sprint Navigation, Sprint Updater (No idea what this is for), Updater (Android?), Sprint Zone, doubletwist, SprintTV Widget (I'm on the clean slate profile with NO Widgets), VoiceMail (I use Google Voice, is this needed?), Sprint Football Live (It's not even Football season!), MP3 Store (I have yet to use on the EVO but is running just in case, thx), as well as many others.
I have 35 apps running in the back ground! WTF? Thanks ****ty app devs and bloatware Sprint!
Have fun try to find options for each app and figuring out each service to know what it's tied to so that you can have a phone that it powerful and run smoothly.
It really shouldn't be this hard or as much of a pain...
Click to expand...
Click to collapse
This is where I am so lost with Android. I read many blogs saying Android does not need a task killer and using one will only make your system slow down. Well I tried one anyway because it's in my Windows Mobile nature to do so (old habits....). I noticed that I too had 35 or so apps running in the background and I thought that doesn't sound good, I wanna kill them all. But then what Android pros keep telling me is to let them be and that the OS will kill them as needed. But from what you're saying, it sounds like the OS doesn't always do a good enough job. So my confusion and learning process of Android continues......

[Q] HTC Desire Z Freeze During Standby Mode

Hi,
I just got a new HTC Desire Z Bell Branded (A7275) for my AT&T service. I "debrand" it using the debrand guide. I just noticed twice yesterday that when I put it in standby mode, I try to press the power button to turn off standby mode so I can get the screen to slide down to unlock the screen for usage. Well, it did not....no matter what I do...I cannot get the screen to get unlock. The screen is black as if it isn't on. I hold the power button, still nothing. Only way is for me to pull the battery out, put it back in and power it up. Is this common? What is the problem that causes this? Any help would be nice. Thank you in advance.

have you oc your phone at all? have you flashed a kernel? custom rom? and what guide did you use?

I used this guide to debrand my phone.
have you oc your phone at all?
Not a single bit, everything is bone stock regarding CPU.
have you flashed a kernel? custom rom?
I only flashed the one from the guide.
[ROM] RUU_Vision_HTC_WWE_1.34.405.5_Radio_12.28b.60.140e _26.03.02.26_M
what guide did you use?
http://forum.xda-developers.com/showthread.php?t=835777
Thanks for the fast reply and help, bahmanxda.

Tbh I am not sure what is the problem I got nothing ,the only thing that I can think of is if you are already rooted and s/off do a full wipe and flash the Rom again or try different roms if u like sense try virtuous 9.0 its really good.
Sent from my HTC Vision using XDA App

There are some others with this issue. Unfortunately, the cause has not been found, or whether it is hardware or software related:
http://forum.xda-developers.com/showthread.php?t=857584&highlight=pulling+battery
I've had this crop up myself a few times. I can say this:
Several times my Desire Z has powered off and could only be powered on after pulling the battery and re-installing. It did this twice within the first few days I owned it. Then it didn't happen anymore.
Maybe a week later I tried the Godspeed kernal (1 GHz) and SetCPU. No issues for about 2 weeks.
Then I tried CPU Tuner based on claims made by some users here that it is easier on battery life. Used a screen-off profile to underclock. The phone had the power off problem, 3 times in 2 days. Every time when the screen was off. But the random poweroffs did not start immediately after installing CPU Tuner, maybe 2 days later.
I uninstalled CPU Tuner to see if it would help (and it didn't seem to be improving battery life). Went back to Set CPU (have messed around with and without screen-off profiles). Its been more than 2 weeks, and no random power-offs.
None of this is conclusive, of course. Maybe the problem in my case was CPU Tuner, or a combination of the kernal and CPU Tuner. Maybe the things I've described are complete coincidence, and its some other factor altogether. But just thought I'd throw my experiences out there. Some claim Google Maps is the problem, but I have not found this to be the case. Or possibly some issue with the battery contacts, or the battery itself. Who knows?

Same thing happens to my Bell Desire Z. Every now and then it just decides to freeze and Only solution seems to be to take out the battery and then put it back.
Very frustrating.

Thanks for the reply, everyone. Strange it has not happen for the past 2 days now. I've read the other thread and still no exact detail on the cause of this. This is not good...especially it is my first Android phone and first HTC (bought it due to their reputation of quality made phones).

It happened twice within the first week of using the phone. Decided NOT to return the phone to observe it for a full month. During that month it happened every 3-4 days, always happens when the phone is not charging, and at the hour mark. Decided enough is enough and returned for a warranty claim 2 days ago.
During the one month, I rooted the phone after 2 weeks and flashed a custom ROM, but the problem did not go away.
There're people who aren't affected by this problem though.

I've the exact same problem here. CM 6.1.1 will just randomly black screen on standby. No response to charge when plugged in. The only way to reset is to pull the battery.
I don't think it happened on stock firmware. I'm now highly debating switching ROMs. It's getting annoying to remove the back cover every time I need to do a hard reset.

I think there is a thread in regards to CM and overclocking causing a screen on issue. But I think in those cases, the phone has power (LED and front buttons light up), just the screen can't power on. But adjusting any overclocking/underclocking profiles is worth a try.
Do you have SetCPU or CPU Tuner setup, and any profiles under those, such as underclock when the screen is off? I tried CPU Tuner for a few days, due to claims by XDA users of better battery life than SetCPU. I got 3 instances in 3 days of the phone not being able to power on (had to pull battery). I un-installed CPU Tuner, switched back to SetCPU, and haven't had the power on issue crop back up for almost a month now.
Given, I had the power on issue 2 times before using CPU Tuner, so it can't be the sole culprit. My only theory is that some combination of switching the kernel and SetCPU has solved the issue. Or it has nothing to do with those at all, just a coincidence, and is something else completely. Who knows.

It happened to me many time already. I still use stock htc desire rom and never rooted..

I've had it happen about 6 times, always requiring a battery pull. Totally stock other than being unlocked, not-rooted. But it hasn't happened for the last 3 weeks or ever since I stopped using juicedefender. Coincidence?

Desire Z freezes
Hi,
I also have some random freezes of my Stock Desire Z, I didn't do a thing on software or hardware side.
I run Android 2.2.1 Build 1.72.405.2 CL296256, provider KPN (Rabo Mobiel)
I got rid of the hangs after the upgrade from 2.2.0 then after several weeks it came back, only solvable by removing the battery.
I tried to figure out what's wrong and I think I have several clues:
- mostly some time after using Google Maps
- mostly when Wifi was on (it might be that the Wifi has limited connection and it screws up the data)
- after the reset I allways have updates from Market available
I can't remeber the Memory widget I ran, which I felt was having a good influence on the hangs.
I'm not happy with this behavioure, but cannot determine if it is hardware or software, it's not helping much that the phone just stalls , a reboot is irritating but less then a complete hangup when you don't know how long it has been in that status.
P.S. I don't run juicedefender
Cheers, Edward

I have STOCK G2 ROM.
S-off, CID, unlock via http://forum.xda-developers.com/showthread.php?t=855764
NO Cputuner or SetCpu (well I uninstalled them before these problems cropped up)
Used G2 for about a month and a bit no problems. Installed launcher pro then started to experience this problem. Coincidence? Not sure. Uninstalled and it did not help. Uninstalled several more apps that I recently loaded (skype, minimalistic text, Gtab Simi clock...) didn't help.
Wiped phone, nandroid backup to original ROM, restored using TB. Worked for a few days then just started happening again.
I also was using 2 chinese batteries I bought from eBay. Not sure if this has anything to do with it either.
// Just reflashed, HTC stock battery. Froze up within an hour. Too bad I bought this off of ebay, no warranty
// Factory Reset, restored apps and data with TB, still freezing

Hi all
I'm new to this forum (sorry, a newbie about to make a whole load of gaffs, no doubt), but I am at least fairly tech-savvy. I've had HTCs for years, right from the days of the 2000 vintage Compaq Ipaq!!
My wife & I bought two Desire Zs at Christmas, and it was therefore 50:50 which box was opened by whom. It appears I picked the dud, as I'm suffering from the issue described by all you guys, and in the other thread:
http://forum.xda-developers.com/showthread.php?t=857584
For the sake of adding more evidence to this otherwise confusing issue, I thought I'd join the forum:
So:
1) The device is not modded in any way. Standard ROM from HTC, being used on the UK T-mobile network. Currently at Android 2.2.1, Kernel 2.6.32.21-g540976a, Build 1.72.405.2 CL296256 "release-keys". This was installed on Christmas day, over the air.
2) There has been no playing with processor speeds or memory management.
3) The first crash of this nature was either on Christmas Day or Boxing day (ie the day-after-christmas-in-England); can't quite remember now, but certainly after the ROM update.
4) I have had this occur irregularly, but in increasing frequency, since that date. I think I'm probably into double figures by now, but I've only started to log them recently.
5) I was starting to think that there was some correllation with GPS applications. The phone would die after using Google Earth, for example, but not immediately. It may be after two or three standby's that it would fail to respond on the fourth, for example.
6) I had a very bad day a few weekends ago where the phone died four times in a single day. I had been using geotagging-photos (in the standard HTC camera app)... plus location-based services such as Yell and Google maps.
7) I tried keeping GPS disabled, and to be fair, there was no evidence of it crashing at that point. But I use GPS too much to make this plausible for a long time.
8) I wondered if it was due to the motion of keeping my phone in my pocket, but it died over night on the bed-side table on Monday-Tuesday, where my last usage had been the Friend-Stream widget/app. GPS was on...
During all of this, my wife's phone has not shown any of these symptoms. Whilst she uses Google Maps, Google Navigator & HTC Navigator a bit, she generally keeps the GPS turned off except for specific odd occasions. Hers has not crashed in this manner...
About to contact HTC to see what their response is...

This has occurred for me regardless of app usage.
It can occur right after a fresh reboot after being fully charged.
// Wow, I was in the middle of sending a txt and it just shut off on me...
I really wish I had a warranty on this

Hey there.
I can clearly pinpoint the problem with my desire z to the GPS. In the first view weeks I used it regularly and my phone froze, but only when the gps sensor was not active anymore (and the phone had gone to standby once or more). It didn't matter which app I used. For a while now I haven't been using GPS and my phone runs smooth as hell.
@lost800: I suppose your problem has a different kind of nature.
I already contacted HTC (very good support) and they told me to send it in to repair. I need my phone for work at the moment and I haven't found time to do this.
Due to the very small amount of ppl having that problem, I suppose it's an hardware error.
Greetz
Edit: Just out of curiosity, is there any meaning to the kernel version? Or has every mobile phone the same one?

Hello all, here is my input on this problem
My DZ has started freezing while I'm doing stuff:
* playing cards
* writting an email or a text
* using xda app
* ...
I never have GPS on. The frequency has greatly accelerated in the past 2 weeks but the weirder thing is that the last 3 times I remove sdcard and then put it back in to get the phone to boot, but it does not boot... it hangs on HTC logo for a long time (I've left it there for up to 15 minutes to see...) I eventually just remove the battery and from the phone and wait before trying to put it back in and boot...
Wait times required have varried from 5 minutes to several days.
I have observed this behavior on Stock 1.34.405, Virtuous 0.9, Virtuous 1.0.0 and back on stock 1.34.405 Today. I've wiped, flashed stock RUU nothing has helped. This puppy is going back for repair/exchange (it is 3 months old).

dwardo said:
Hello all, here is my input on this problem
My DZ has started freezing while I'm doing stuff:
* playing cards
* writting an email or a text
* using xda app
* ...
I never have GPS on. The frequency has greatly accelerated in the past 2 weeks but the weirder thing is that the last 3 times I remove sdcard and then put it back in to get the phone to boot, but it does not boot... it hangs on HTC logo for a long time (I've left it there for up to 15 minutes to see...) I eventually just remove the battery and from the phone and wait before trying to put it back in and boot...
Wait times required have varried from 5 minutes to several days.
I have observed this behavior on Stock 1.34.405, Virtuous 0.9, Virtuous 1.0.0 and back on stock 1.34.405 Today. I've wiped, flashed stock RUU nothing has helped. This puppy is going back for repair/exchange (it is 3 months old).
Click to expand...
Click to collapse
I called HTC support to see about getting the phone replaced. After explaining to the guy that it was freezing and then not rebooting when I pulled the battery out, the first thing he said was: "Did you install apps from the market ?"
Given that I replied by the affirmative he wanted me to test rebooting in safe mode and seeing if the freezes still occured before moving on to a replacement. He claimed that some market apps are not "properly coded and can mess up the phone"
I asked for and got the instructions how to reboot into "safe mode" (hit keyboard S key at HTC logo and stay on it while it boots)
In "safe mode" you can still install apps but they won't appear in the app drawer so you won't be able to start them (you can start them if they are on your home pages though ). No backgroud apps will run though (bbc, task killer ...)
Well I ran in safemode for 6 days and used the phone as I always do (work email, leisure email, web, video, camera, games, GPS, bluetooth etc...) and the darned thing ran perfectly. No freeze during those 6 days (the last few times it took less than 2 days to get a freeze).
I therefore decided it was time to test it again in "normal mode". Before rebooting I removed my task killer as for me this was "THE APP" that "safe mode" was really blocking from running on my phone...
Well It has been 2 days now and still no freeze. If it stays that way for another week I think I will have a rather good idea of who was the culprit...
Will keep you all updated and keep my fingers crossed.

Hi guys
An update:
HTC over the web-support were very helpful. Immediately they suggested that the device needed to be taken in for repair. In subsequent stages of the dialogue, they stated that the mainboard would be replaced.
A couple of weeks ago, I cleared down my device, packaged it up and waved goodbye to it (sniff...). HTC took it and...
!!DID NOTHING!!
It came back on Monday with an *old* ROM installed (1.35... If I remember correctly), and a statement saying 'no fault found'.
I've built the phone back up to where it used to be, including installing the over-the-air update to 1.72.405.2 (I need this as there's an activesync exchange bug in the old ROM) and within 24 hours, the device was unresponsive again
I have just written back to HTC to find out what the next steps are. I'd be interested to see if they suggest some debugging actions, like the safe-mode option, for example.
I've also asked them directly if their engineers have any clue what is causing this? Fundamentally, I don't see how any app should have the power to kill the device, however badly written it might be. That suggests insufficient controls/barriers in the OS.
Throughout this period, my wife's phone has continued to operate perfectly, even with some extra GPS playing to try to force a failure. So, we are now looking for any differences that could help to pin this down further. One difference is that she has never enabled the HTCSENSE.COM account on her phone, whereas I had. Perhaps there's some problem with the Phone Location functionality (in addition to the fact that I have to be in a yacht off the West coast of Africa for it to accurately show the phone's location). To test this, I've removed my HTCSENSE.COM account this morning.
Dwardo: I think your issue is slightly different, but the safe-mode info is useful.
Thanks
Andy

device reboots itself all the time :((((

this is sux... how to fix it?
i tried to do hard reset but still the same problem.
usually it reboots when i'm listening a music but today it has rebooted when i was using simple "light" application...

Sounds like you have a defective phone if it's happening frequently while your phone is awake. I've had the same thing happen one time in six weeks, not enough to call it a problem, but if you're having it daily or more something is wrong with the phone. I'd exchange it if it were me.

Are you still stock?
rom
kernel
launcher
theme
Help us, help you...
good day.

lilirose said:
Sounds like you have a defective phone if it's happening frequently while your phone is awake. I've had the same thing happen one time in six weeks, not enough to call it a problem, but if you're having it daily or more something is wrong with the phone. I'd exchange it if it were me.
Click to expand...
Click to collapse
yeah, almost daily...
i was thinking about exchange but i waited 3 weeks for my device from germany to my country... so if i send them it back i will have to wait another 50-60 days...

chopper the dog said:
Are you still stock?
rom
kernel
launcher
theme
Help us, help you...
good day.
Click to expand...
Click to collapse
yeah, stock, no root, no custom, stock launcher

Well of course try to do a factory reset and very selectively install apps and see if something is causing it. If nothing specific is causing it you're probably looking at a defective device.

Nine times out of ten the reboots are caused by some apps that you are using or that runs in the background. If you wiped your phone and set it up again, do not install apps. DON'T. See if it crashes like that or not. If it still crashes then you likely have a hardware defect of sorts.
Of all apps, stay away from any apps that interfere with Android as a system. Battery life managing apps are by far the worst, for example.

Yeah, kristovaher makes a good point- it could possibly be a rogue app. Avoid not only battery manager apps but also task killers and any other app that supposedly increases battery life. None of them are really necessary or useful anyway.

i have done factory reset
installed only Go Keyboard, turned on unknown sources and usb debugging like i allways do.
copied all my mp3s to the device and was listening a music... and it reseted again...
p.s. btw, sometimes when i'm listening a music and screen is locked, the music starts lagging (slows down)... it plays normal if i press power off button so the screen highlight.

definitely an orange

guys do u really think i should return this?
it will take another 1.5-2 month untill it reachs the shop or return back to me.. not sure if they even will answer via e-mail when i'll ask for relace... i'm not sure but i think it started reboot much after 4.0.2. maybe new 4.0.3 will have positive effect. some people from my local forums also advised me to flash any custom ROM (some of them had such a problem and it helped them, reboots gone... liek they said)

This random reboot has happened to so many people. So please, don't tell him that he got a lemon. You can google up "galaxy nexus random reboot" and see how many complaint of similar issue have been posted. I also got random reboot every two days or so. But if the OP got it every day or more frequently than that, just exchange it.
If you want to proudly say your Gnex does not randomly reboot, EVER, then just use it for phone calls, browsing the internet, and Facebook only.

How often is it happening?
If its more than once a day its certainly defective. That is not normal behavior. If its every few days then deal with it.

It's happened twice under the same set of circumstances:
1. Streaming Pandora
2. Charging
Not sure if they're related but it started happening after upgrading to 4.0.2.

phiquantu said:
This random reboot has happened to so many people. So please, don't tell him that he got a lemon. You can google up "galaxy nexus random reboot" and see how many complaint of similar issue have been posted. I also got random reboot every two days or so. But if the OP got it every day or more frequently than that, just exchange it.
If you want to proudly say your Gnex does not randomly reboot, EVER, then just use it for phone calls, browsing the internet, and Facebook only.
Click to expand...
Click to collapse
I do everything with my gnex, and aside from adw launcher ex, have seen NO reboots in the month I have had it.

Aridon said:
How often is it happening?
If its more than once a day its certainly defective. That is not normal behavior. If its every few days then deal with it.
Click to expand...
Click to collapse
well, last 1.5 weeks after i stopped using NRG player and turned to stock google music player, i had no reboots... but few days ago it started to reboot again.. can't say every day, maybe in 2-3 days but only once per day... mostly when i'm listening a music.
phiquantu said:
This random reboot has happened to so many people. So please, don't tell him that he got a lemon. You can google up "galaxy nexus random reboot" and see how many complaint of similar issue have been posted. I also got random reboot every two days or so. But if the OP got it every day or more frequently than that, just exchange it.
If you want to proudly say your Gnex does not randomly reboot, EVER, then just use it for phone calls, browsing the internet, and Facebook only.
Click to expand...
Click to collapse
if it's mass problem then it's really sad....

why dont you flash 4.0.3 and rule out whether it's 4.0.2 or the phone... if it's the phone i'm assuming you're on GSM, cause if you weren't, you could walk into verizon, switch it out, and have a new one 15 minutes from now.

I had the same problem yesterday, I tought it was a problem with the kaspersky launcher. isn't that a problem of kaspersky?

asheg said:
p.s. btw, sometimes when i'm listening a music and screen is locked, the music starts lagging (slows down)... it plays normal if i press power off button so the screen highlight.
Click to expand...
Click to collapse
This is a known issue with certain encoding bit rates on music files. Enable the EQ music effects and it keeps the cpu speed high enough to negate lag, even when screen is off.

Almost all the complains about reboots are connected with 4.0.2 update. Letw wait for 4.0.3. When I was on 4.0.1 no reboots.

So is there no fix/ solution for random reboots?

I got my Nexus 7 when it first came out last year, rooted it, installed TWRP, and have been on several different ROMs since. Didn't have any issues with random reboots for several months. Early this year, I started having an issue where the tablet would freeze while I'm using it, then automatically reboot itself. I thought perhaps it was a problem with the ROM I was running, but I had switched ROMs a few times after that, and every single ROM I've been on since then has had the same problem. It usually only happens when I'm browsing the Internet (with Chrome being my browser of choice), but I've had it happen once while using the camera app, as well.
The other day, I upgraded TWRP to the latest version, and I installed the 4.04 bootloader in preparation for Lollipop ROMs. I was hoping on some slim chance that perhaps an upgraded bootloader might fix the problem, but I'm still getting random reboots.
I know I've seen people talk about random reboots as well, but in the past, I never saw anyone find any kind of solution. Is there one, or is it one of those things I just have to live with, at this point? It's odd to me that I didn't start experiencing this issue right away, and that it only started several months after I had had the device. To me, that makes it seem like it's not a hardware issue/ defect, but I guess no one has been able to pinpoint what the problem is, why it occurs, and how to fix it, huh?

mrw1215 said:
I know I've seen people talk about random reboots as well, but in the past, I never saw anyone find any kind of solution. Is there one, or is it one of those things I just have to live with, at this point? It's odd to me that I didn't start experiencing this issue right away, and that it only started several months after I had had the device. To me, that makes it seem like it's not a hardware issue/ defect, but I guess no one has been able to pinpoint what the problem is, why it occurs, and how to fix it, huh?
Click to expand...
Click to collapse
I'd tend to agree with you it's a software thing. However, my approach would be a bit more radical than yours: that I would erase everything, including formatting the internal storage twice (after making a backup, of course), then install a completely clean rom, use it for a while to make sure it doesn't act up again before restoring any apps.
On the side, I've seen a Nexus doing random reboots whose owner had opened the back and bent the cover somehow, which slightly depressed the power button. While the button operated normally, this condition forced it to "click" randomly, which caused the reboots. It stopped after the owner replaced the back cover. You might want to check this part. Good luck.

Most of the time, random reboots are kernel related. If you are overclocked try to set max CPU lower and see if the problem fixes itself. If you don't overclock try installing something like Trickster Mod, and lower max CPU to see if that helps. What ROM and kernel are you running?
Sent from my 2013 Nexus 7
"Until death, I will remain a Dirty Unicorn.."

I always recommend flashing back to stock to rule out software issues. If it continues, you've got a hardware issue.

I haven't really messed around with kernels, I've typically just used whatever was included in a particular ROM, and I never adjust to overclock or anything like that. I don't remember what all the ROMs I've been on are, but I've been on CM before, and I'm currently using CleanROM. I think the only time I ever specifically tried a different kernel was a while back, when I flashed an Elemental kernel, but I've since wiped and been on a different ROM.
For now, I'm trying to hold out wiping anything until a good, rooted build of Lollipop is available, at which point, I'll try wiping out everything, including internal storage, and see if that helps.
I guess I could also try flashing back to stock before I do that, though. I think I've seen one stock ROM for the N7 floating around. The only problem is, it's really hard to "test" this, because the reboots are very inconsistent. The other day, after I had updated the bootloader, I was browsing Chrome for over an hour before I got a random reboot. One time, I was browsing Chrome for an hour and had 4-5 random reboots within that hour. So, that makes it difficult to determine if it's fixed in a timely manner. :/

Alright, so now that there's a proper build of Lollipop out, I did a factory reset and wiped internal storage (twice), and I'm now running stock Lollipop. I spent about an hour or so getting everything set up, and no reboots thus far; but the reboots mainly occur when I'm using Chrome, and I didn't really do any browsing, as I was getting all my accounts and apps and whatnot set up. Hopefully within the next couple of days, I'll have used it enough to get a good idea as to whether or not I'm still experiencing issues.

So far, no reboots, though i don't want to jinx it, heh... I'll be glad if the issue is finally fixed, but I'll also feel kinda dumb that all it took to fix it was something as simple as wiping internal storage and/ or reflashing a stock ROM. Lollipop is pretty nice, as well.

Yeah I'm using a custom version of L myself. You need to flash custom kernel to get working root access with SuperSU BETA 2.19
Sent from my 2013 Nexus 7
"Until death, I will remain a Dirty Unicorn.."