Develop Bugs

Overheating and Wi-Fi issues on Galaxy Nexus

Hey guys, I've had a Galaxy Nexus for over a year now. Always been a very problematic phone for me I'm afraid...
Wi-Fi often doesn't work, the phone recieves signal but it's often gray instead of blue. It sometimes works for 10-20 seconds but then stops working again. Sometimes, Wi-Fi works just fine. There are no problems with 3G data though.
Furthermore, the phone gets extremely hot during most applications. Even some 2D games overheat the phone. It gets very uncomfortable to hold and games start to become unplayable because of stutter and low fps. Battery also runs out extremely quickly while overheating occurs. Interestingly, Minecraft works very well, doesn't overheat or drain battery too much. Casual browsing and watching 720p videos also makes it overheat.
Got the phone from another country, so I don't have a warranty. (International warranty is not really applicable in my country and it's been over a year anyway)

Aragis said:
Hey guys, I've had a Galaxy Nexus for over a year now. Always been a very problematic phone for me I'm afraid...
Wi-Fi often doesn't work, the phone recieves signal but it's often gray instead of blue. It sometimes works for 10-20 seconds but then stops working again. Sometimes, Wi-Fi works just fine. There are no problems with 3G data though.
Furthermore, the phone gets extremely hot during most applications. Even some 2D games overheat the phone. It gets very uncomfortable to hold and games start to become unplayable because of stutter and low fps. Battery also runs out extremely quickly while overheating occurs. Interestingly, Minecraft works very well, doesn't overheat or drain battery too much. Casual browsing and watching 720p videos also makes it overheat.
Got the phone from another country, so I don't have a warranty. (International warranty is not really applicable in my country and it's been over a year anyway)
Click to expand...
Click to collapse
Is it the stock ROM? Which carrier? You could try updated radios and resetting to factory images. Who knows what the seller was running on the thing. Google has all the factory images on their Factory Images for Nexus Devices page (can't post a link, just google it)

itzweber said:
Is it the stock ROM? Which carrier? You could try updated radios and resetting to factory images. Who knows what the seller was running on the thing. Google has all the factory images on their Factory Images for Nexus Devices page (can't post a link, just google it)
Click to expand...
Click to collapse
Hey, thanks for the reply.
Already tried resetting to factory settings. I once tried to root it but it somehow didn't work. Maybe the OS was somehow damaged?

Aragis said:
Hey, thanks for the reply.
Already tried resetting to factory settings. I once tried to root it but it somehow didn't work. Maybe the OS was somehow damaged?
Click to expand...
Click to collapse
Resetting factory settings and flashing a factory image are two separate things. Sounds like you need to fully reset your phone:
http://forum.xda-developers.com/showthread.php?t=1626895

Note 3 Lollipop Update - Overheating !!!

Just got my Lollipop Update for my Note 3 today. I was stuck at 4.4.2 for a very long time, probably around six months or longer at 4.4.2. I was excited to see what the changes and improvements would be, only to be really pissed !!!
After about an hour or longer, my Note 3 finished the update, rebooted, then went through more of the updating process, and then I saw the new look, but noticed the screen brightness was very low. I saw the error message telling me that my device was overheating ... !!! What !!! My Note 3 has NEVER overheated, and I got my Note 3 in December of 2013.
I called Samsung Tech Support, did the usual Reboot, no help. Then the usual Safe Mode, but still no change. Finally did the Wipe Cache Partition, but still the issue was not fixed. Samsung Tech Support told me the only solution was to send in my Note 3 for repairs, or try a Factory Reset.
I went back to Settings and noticed something that caught my attention ..... I saw the little box with a green check mark, and decided to "Uncheck" that little box, and you know what happened ... ??? My Brightness went back to normal, very bright !!!
Why did the Samsung Tech Support miss that super-easy fix !!! At least to set the Brightness to bright again. BUT ..... I notice that my Note 3 is running much warmer than ever before. So, rather than risk serious damage from overheating, I turned off everything that I possibly could, which is a bummer, because now my Super-Cool High-tech Advanced Smartphone is not so cool anymore, with Brightness turned way down, Power-Saving turned on, Bluetooth off, WiFi off, all Haptic turned off, Download Booster turned off, Roaming off, almost everything OFF ... !!!
What's the use of having this Monster Mini-Super Computer if I can't even take advantage of the many cool features ... !!! Might as well just go back to using a Dumb-Phone .....
Oh well, I might just upgrade to the Note 4 anyways, since that might be the last of Samsung Smartphones with a removable battery and SD card reader ..... -- Jim .....

Overheating is caused by overcharging or excessive CPU load. You probably have an application that is running a background service on boot and it is stuck in a race condition because your upgrade caused a system change that it can not handle properly. To find out if this is true you can uninstall all your applications and see if the problem stops. Then you can install them one at a time and see which causes the overheating.
Frank

Thanks for your advice. Since I have so many apps, it would be a lengthly process, taking several months. I use many apps everyday, and since my Note 3 is my main computer, I might not use this strategy.
I may upgrade to the Note 4, and keep my Note 3, then send my Note 3 in for repair or replacement ......

Note 7 Heating Up and Freezes

I recently observed that my Note 7 have heating up episodes and eventually freeze. I suspected beta apps but I did uninstall all of them. It kept heating up and freeze so I did a full system reset and installed about 2 to 3 apps and it started to heat and freeze again.
Lately I also observed that when I use the camera heavily the phone starts to heat up again and freeze.
My note 7 is due for replacement on October 15 and I still have to suffer these problems for 19 more days.
Any solution on what to do?

Yes, do what they suggested in the recall - power it off and do not use it.
Sent from my SM-N930T using Tapatalk

That's exactly what happened to me. I did replace it with Note 4 until new Note 7 arrives here ( Egypt ).

I think its the battery starting to fry chips .... solution - wait to exchange! My new one is perfect now for over 2 weeks.

FloydQue said:
I recently observed that my Note 7 have heating up episodes and eventually freeze. I suspected beta apps but I did uninstall all of them. It kept heating up and freeze so I did a full system reset and installed about 2 to 3 apps and it started to heat and freeze again.
Lately I also observed that when I use the camera heavily the phone starts to heat up again and freeze.
My note 7 is due for replacement on October 15 and I still have to suffer these problems for 19 more days.
Any solution on what to do?
Click to expand...
Click to collapse
I too have been having the problems you described, intermittently, freezing mid use, getting warm etc, but it has spells where it gets much much worse.
The phone wouldnt boot, wouldnt go into recovery, would partially boot then freeze, would not "hard reset" would not go into recovery, all intermittently.
I couldnt do a factory reset (which i thought might help) as although i managed to get to recovery (after about 5 tries) it couldnt read any of the memory, maybe this is whats causing the exynos phones to lock up, memory errors?
My phone booted about twenty minutes after the photo was taken, and im writing this post on the phone i was having issues with without doing a factory reset (because it didnt work when i tried) but itll be back sure as day, and ill be very frustrated. I hope my replacement doesnt do the same.

I'm using a new note 7 now and let's see how it will go. I'll update you. According to the store my note 7 fried a few capacitors so when it overheats, it freezes.

itsjustbilly said:
I too have been having the problems you described, intermittently, freezing mid use, getting warm etc, but it has spells where it gets much much worse.
The phone wouldnt boot, wouldnt go into recovery, would partially boot then freeze, would not "hard reset" would not go into recovery, all intermittently.
I couldnt do a factory reset (which i thought might help) as although i managed to get to recovery (after about 5 tries) it couldnt read any of the memory, maybe this is whats causing the exynos phones to lock up, memory errors?
My phone booted about twenty minutes after the photo was taken, and im writing this post on the phone i was having issues with without doing a factory reset (because it didnt work when i tried) but itll be back sure as day, and ill be very frustrated. I hope my replacement doesnt do the same.
Click to expand...
Click to collapse
You likely have failing memory on that board. I would replace that phone.
Sent from my HTC6545LVW using Tapatalk

Been using my v2 for 5 days now. Hasn't gotten anywhere near hot or supringly even warm. I think I got lucky on this one because it's running like a champ. Unless I'm using the phone wrong?
Sent from my SM-N930T using XDA-Developers mobile app

Cool as the other side of the pillow...

I'm not sure where else to put this (I searched and found nothing) but has anyone else been impressed by this phones ability to remain cool to the touch? I'm using the stock case that came with the US variant of the phone and aside from an APN issue where signals were going insane and the radio tried to connect to a billion different towers, I have not once noticed the phone getting much above ambient temperature.
Is this normal? Can anyone else confirm that this thing just doesn't get hot?
I'm bringing this up because I've owned/used around 30 different smartphones from all of the major manufacturers and the vast majority get quite warm during several normal tasks.
For instance, on most phones I've used, if the brightness is up and I'm gaming for any extended period of time the phone will get quite warm. If I'm charging and browsing the web, most phones will warm right up. If I'm gaming and charging at the same time, things get toasty. If I'm gaming and quickcharging/turbocharging things get pretty bad. If I'm gaming on a "practically magic" iPhone while it's charging- forget about it. Same goes for most phones and video recording.
The Le Pro 3 has remained completely usable during all of those tasks. It's actually downright creepy being able to heavily game on full brightness while quickcharging without my fingertip being on fire within a few minutes.

rushtest4echo said:
I'm not sure where else to put this (I searched and found nothing) but has anyone else been impressed by this phones ability to remain cool to the touch? I'm using the stock case that came with the US variant of the phone and aside from an APN issue where signals were going insane and the radio tried to connect to a billion different towers, I have not once noticed the phone getting much above ambient temperature.
Is this normal? Can anyone else confirm that this thing just doesn't get hot?
Click to expand...
Click to collapse
This is supposed to be the benefit of the Snapdragon 821 processor; fast but at the same time power efficient....

I hear you. Playing Pokemon Go with a Pro 3 is smooth and cool, I can say that playing for about 10 minutes straight and it gets warm, but not hot. Unlike playing it with my One Plus One, a 5 minute session and it gets hot. This phone totally surprised me :good:
Sent from my LeEco Le Pro3 using XDA Labs

suhridkhan said:
This is supposed to be the benefit of the Snapdragon 821 processor; fast but at the same time power efficient....
Click to expand...
Click to collapse
Obviously they've made strides, but its not just the chipset. Reviews of the pixel, ZTE and Asus 821 phone all mention how the 821 is better than 820 (lol, as in it can't cook an egg) but they all say it gets warm and the pixels seem to have significant heat issues.
The battery isn't getting massively hot even under quick charge despite being enormous and charging very quickly for its size. The screen doesn't seem to emit much heat either though it's not some AMOLED qhd monster but still. I mean it's obvious that the CPU is right below the fingerprint reader as it does get warm but nothing even gets what I'd consider hot especially for a modern flagshipish smartphone.
I've used supposedly power sipping/efficient chipset before as well as stuff like the original moto x which was literally a heat bomb and none of them have done so well. I'm sure it's not the actual best temperature that a phone has ever been but it's like night and day for me!
Kudos to Qualcomm or LeEco or the battery manufacturer or the screen supplier- they all seem to have gotten it right with regards to heat and efficiency.
I even have the speed up box enabled for all relevant apps and have turned off most power saving stuff and the phone is still cooler than every modern smartphone phone I've used including hugely underpowered ones.

rushtest4echo said:
...aside from an APN issue where signals were going insane and the radio tried to connect to a billion different towers,
Click to expand...
Click to collapse
I had a same problem but after moving to CM, no such issues.

4K2K said:
I had a same problem but after moving to CM, no such issues.
Click to expand...
Click to collapse
Good to know, if anyone else has this issue - mine was deleting T-Mobiles default APN and making a MetroPCS one (incorrectly), then deleting that and having it automatically revert back to T-Mobile. Once I cleared everything and manually put Metros APN stuff correctly everything cleared up and has been fine since.
But during that half morning when I couldn't figure out the issue my Pro3 was getting quite warm and I was ready to return the thing. The issue remained even after a factory reset until I manually adjusted the APN.

rushtest4echo said:
Good to know, if anyone else has this issue - mine was deleting T-Mobiles default APN and making a MetroPCS one (incorrectly), then deleting that and having it automatically revert back to T-Mobile. Once I cleared everything and manually put Metros APN stuff correctly everything cleared up and has been fine since.
But during that half morning when I couldn't figure out the issue my Pro3 was getting quite warm and I was ready to return the thing. The issue remained even after a factory reset until I manually adjusted the APN.
Click to expand...
Click to collapse
My situation was different then. APN was fine but it somehow kept frequently switching LTE bands/towers my carrier offer which caused ever frequent signal fluctuation.
Nothing could fix it until I moved to CM.

(S20 Ultra) Wi-Fi slows down after a while?

Greetings, hope you're all staying safe
I got an S20 Ultra, Snapdragon variant. Everything about this phone is amazing honestly expect for one spot...
The Wi-Fi gets ridiculously slow after a while and I mean REAL slow speeds, It doesn't lose the Wi-Fi signal, actually it's almost full all the time.
The Power Plan is on High Performance, no power saving features enabled whatsoever whether in the Wi-Fi settings or anywhere else.
The only temporary solution is to disconnect the Wi-Fi connection and reconnect again and it'll work fine for a while and so on.
It's very frustrating since when it actually works fine the performance is pretty good, I've searched around and found a few people experiencing the same issue but no fix yet.
Hope someone out there figured out a fix, or Samsung releases and update to the fix the issue if it's a firmware bug.
Thanks and looking forward to your help.

Yup mine ultra disconnects completely and won't reconnect unless I turn wifi off and on again

Have you checked the router? To ensure that the router isn't locking up?

tekboi01 said:
Have you checked the router? To ensure that the router isn't locking up?
Click to expand...
Click to collapse
Have the same issue , s20 Ultra exynos, connected to a few router in house , after a random moment wifi is gone , have to restart S20U

Similar issue here but S20+ Exynos. WiFi works great for a while and then drops to 1 mpbs saying "Connected without internet". I then have to turn it off and on to get it to work properly.

tekboi01 said:
Have you checked the router? To ensure that the router isn't locking up?
Click to expand...
Click to collapse
My Note 9 and my brother's OnePlus both don't have this issue, all my other devices as well.
It's the phone unfortunately and many others experience the same thing but I don't know whether it's a software or a hardware issue.

Mentioned this before. It's really happening. No way to fix a hardware issue.
chieco said:
I've noticed on my S20+ another downside of this heating issue.
When the phone get's hot, the WI-FI speeds drop down to those of a 56k Modem.
I was transferring big files from my NAS via it's app DS File, and while the phone is cool speeds are perfect but, while the phone is hot the speeds drop extremely. A 1GB file that usually takes 30 seconds, now takes a few minutes to finish. Also while watching twitch vie browser and the phone get's hot and the becomes unwatchable because it begins buffering but never ever working unless you stop and let the phone cool down. Same if I use kodi to watch a video of my NAS... after a while the phone gets hot and buffering begins.
Not only the CPU get's throtelled or the phone decides to switch from 120Hz down to 60Hz... NO...! Even WI-FI gets throtelled. I ****ing hate my S20+ for this. **** Samsung for this hot pile of ****.
Click to expand...
Click to collapse

chieco said:
Mentioned this before. It's really happening. No way to fix a hardware issue.
Click to expand...
Click to collapse
How did you conclude that it's a hardware issue and not a software one?
Also, it has nothing to do with the phone heating up as far as I can tell. It happens randomly even if the phone is just idling and you decided to use it.

That's from my experience. Your issue sounded the same. What makes you think it's a software issue?

chieco said:
That's from my experience. Your issue sounded the same. What makes you think it's a software issue?
Click to expand...
Click to collapse
I'd say for two reasons, first if it was a hardware issue it wouldn't appear randomly just like in my situation, it would be persistent instead.
The second and most importantly, is that toggling the Wi-Fi off and then on fixes the issue instantly for a while before it appears randomly again.

S188 said:
toggling the Wi-Fi off and then on fixes the issue instantly for a while before it appears randomly again.
Click to expand...
Click to collapse
then we have a different issue. Hope it get's fixed for you. My problem on the other hand is a hardware issue.

My Exynos S20U dropped to really low WiFi speeds today for download only, upload was still full, I have 2x 5ghz routers and both were giving the same low download speed, was about to call ISP but then noticed the red recording light was on the sky box, it was eating all my Download speed, killed the recording and had full bandwidth again, probably unrelated but ideas to check other connected devices

Unfortunately still no actual fix for this issue, it appears randomly. My Note 9 on Android 8 and Note 10+ on Android 9 don't have this issue. I read that some other users with Note 10 and S10 on Android 10 experience the same issue so it's apparently a software issue.
Hope it gets fixed soon, everything about this phone is good so far but this issue is ruining the experience :/

I think i have this issue too!! I've been changing settings on my router for the last two weeks! Is this a software bug?

kk-ftp said:
I think i have this issue too!! I've been changing settings on my router for the last two weeks! Is this a software bug?
Click to expand...
Click to collapse
The good news is that it's a software bug as many have and still reporting this issue appearing after updating to Android 10 on the S10 and the Note 10. The bad news is that Samsung is doing nothing about it :/