Develop Bugs

Phone randomly turning off

my htc s621 is randomly turning off on itself. i notice it does this either when it is feeling warm, or when im outside and the weather is a little chilli. i thought it might be a battery problem but i dont want to waste the money buying a battery if its not going to solve my problem. anyone encounter something like this before? any help or advice would be much appreciated. thank you.

had same issue a while ago. i solved it with a new battery...
you can check if your battery is bloated by making it spin on a flat table. if the battery keeps spinning, then it means you likely need to get a new one...

Probably the battery. I'm still managing with my original battery but I talk and text very little. When I put it under a heavy load like browsing, it shuts down. Doesn't do it when it's plugged into AC.

dboyer said:
Probably the battery. I'm still managing with my original battery but I talk and text very little. When I put it under a heavy load like browsing, it shuts down. Doesn't do it when it's plugged into AC.
Click to expand...
Click to collapse
get a new battery... a friend of mine had that same issue.. turned on wifi, opened google, bye phone... i told him to get a new battery and he's fine with his dash

i have the same problem. I have buy a new battery on "battery update" (Hong Kong web site) payed €20,00 (almost £18,00) ..perfect!
But i must say that..unfortunately ..since i use 3evo roms...battery seems going crazy! Maybe i wrong...however
my batter is almost 4 years old but only from few time it's seems "go away"!
i't happens since i use often dash for watch divx and listem music !
task manager say :"battery backup 255% status high but "mAh" are very down!! Change your battery mate!

I have to concur. The same thing was happening to my phone over the past 2 weeks. Purchased a new battery from ebay (~$10) and everything is good to go. In fact, with the latest 3vo Rom, in the past 2 days my battery has been lasting longer!

hey guys deff a battery issue went through same thing with my wifes. fyi if you have had the phone less than a year call htc they will replace battery under warrenty no questions asked just have to have the imei number. swapped out the wifes payed nothing and fixed the problem.

hey, i just started getting this too.
and my battery is only 2 weeks old...

battery, I had same problem

http://forum.xda-developers.com/showthread.php?t=499819&highlight=phone+turning
http://forum.xda-developers.com/showthread.php?t=441703&highlight=phone+turning
http://forum.xda-developers.com/showthread.php?t=539245&highlight=phone+shutdown
http://forum.xda-developers.com/showthread.php?t=368495&highlight=phone+shutdown
http://forum.xda-developers.com/showthread.php?t=438221&highlight=phone+shutdown
http://forum.xda-developers.com/showthread.php?t=418839&highlight=phone+shutdown
That's just a few yep it's your battery

THANKS you guys were a great help

Ray_jai said:
hey, i just started getting this too.
and my battery is only 2 weeks old...
Click to expand...
Click to collapse
did you buy your phone used or new?

trinistylez said:
my htc s621 is randomly turning off on itself. i notice it does this either when it is feeling warm, or when im outside and the weather is a little chilli. i thought it might be a battery problem but i dont want to waste the money buying a battery if its not going to solve my problem. anyone encounter something like this before? any help or advice would be much appreciated. thank you.
Click to expand...
Click to collapse
oh yes. mine would actually turn off, and even when its on, the network goes on and more off than on, impossible to do anything but browse th net, if anyone has any idea on wat to change on it, i've also upgrade to WM6.5 but it didnt help,

[Q] Rooted Motherboard Issues?

Knowing that this is my last resort and with all the wonderful knowledge here on the forums, I'm hoping I might get some creative ideas.
I recently bought a Tab S 8.4, rooted it about 2 weeks after I got it. No problems, everything is working great. Last week, the screen starts to flicker and the tablet reboots randomly. When it does this, the battery goes from 100% down to 12%. Eventually this happens enough where the tablet won't stay on for longer than a minute. Read around the forums and find others mention the exact same issue. Potentially a battery pull/re-plug may alleviate. Tried that to no avail.
I have found that if I hold the battery plug in place *real* tight, by pushing down with my finger, the tablet operates somewhat normally. Could be a motherboard issue.
Anyone run into this at all? Thoughts? Ideas? Replacement parts? I've got a $500 brick on my hands now with no warranty to boot. :crying:
Thanks in advance!

I soldered my battery straight to the board. But before doing that, try spraying some contact cleaner (found in hardware stores) and see if it Will work

hey, i got this issue once ! go to customer service,they will fix it for you in 5min FREE !

sku|| said:
hey, i got this issue once ! go to customer service,they will fix it for you in 5min FREE !
Click to expand...
Click to collapse
Which customer service are you referring to? A local samsung customer service?

Squez said:
Which customer service are you referring to? A local samsung customer service?
Click to expand...
Click to collapse
yes, samsung service center

sku|| said:
yes, samsung service center
Click to expand...
Click to collapse
So they took off the back cover and soldered it back in for you for free with no warranty? I'm a bit surprised they would do that. I'll have to see if I have one in my area.

Please keep us updated
Squez said:
So they took off the back cover and soldered it back in for you for free with no warranty? I'm a bit surprised they would do that. I'll have to see if I have one in my area.
Click to expand...
Click to collapse
Hey Squez please keep us informed and if you get this problem resolved. I am not gonna root my Tab S until I know its safe to do so... thanks and good luck.

TeeShark said:
Hey Squez please keep us informed and if you get this problem resolved. I am not gonna root my Tab S until I know its safe to do so... thanks and good luck.
Click to expand...
Click to collapse
I found a local electronic repair shop that said they could re-solder it for me relatively easily. Brought it in and he said it did look like the terminals on the battery plug had been pulled back a little bit and weren't soldered on there very good (good to hear some type of confirmation on that and he let me view it through a microscope as well). Twenty minutes and twenty dollars later, my tablet is working as it did previously. I've used it sparingly over the last 2 hours, so nothing definitive yet, but the fact that it doesn't restart right away makes me think the issue is resolved.
Thanks everyone for the suggestions!!

Sweet

Squez said:
I found a local electronic repair shop that said they could re-solder it for me relatively easily. Brought it in and he said it did look like the terminals on the battery plug had been pulled back a little bit and weren't soldered on there very good (good to hear some type of confirmation on that and he let me view it through a microscope as well). Twenty minutes and twenty dollars later, my tablet is working as it did previously. I've used it sparingly over the last 2 hours, so nothing definitive yet, but the fact that it doesn't restart right away makes me think the issue is resolved.
Thanks everyone for the suggestions!!
Click to expand...
Click to collapse
eh? 20dorra ??

Squez said:
I found a local electronic repair shop that said they could re-solder it for me relatively easily. Brought it in and he said it did look like the terminals on the battery plug had been pulled back a little bit and weren't soldered on there very good (good to hear some type of confirmation on that and he let me view it through a microscope as well). Twenty minutes and twenty dollars later, my tablet is working as it did previously. I've used it sparingly over the last 2 hours, so nothing definitive yet, but the fact that it doesn't restart right away makes me think the issue is resolved.
Thanks everyone for the suggestions!!
Click to expand...
Click to collapse
Glad to hear you got it working bro.. seems.like a samsung quality or even design issue, they got plenty of space yet decided to use a very small terminal

Battery Results
Just wanted to follow up with everyone that might be experiencing similar issues. After fixing the issue, and de-bloating a bit, my battery life is phenomenal. Much better than when I first got it. I suspect the battery issue was causing some drain as well, even when it wasn't restarting. The attached screen is still with 35% battery left.

Thanks to all those who contributed to this thread. I too was having battery issues. I'd get random restarts, disconnects from the cellular network, forgetting wifi passwords, battery that would go from 50% to dead in three seconds., display glitches etc. I finally opened up my tab which I thought was going to be a pain but was actually pretty easy. By naked eye the solder joints looked fine but under a microscope I could see that all six solder joints on the battery connector were cracked and by pressing on the connector could see the connector move independently from the PCB. Resoldered the joints and everything is good now.

Well my problem is that the battery isn't charging, I get a battery with a red "X" mark when the screen is on but when it is turned off, its charging well but very slow and when it reaches 99% it never goes to 100%. Could it be possible I have the same problem as you guys? no random restarts for me just the issue of sucky battery life (3 hours on wifi) and not charging
Squez said:
Just wanted to follow up with everyone that might be experiencing similar issues. After fixing the issue, and de-bloating a bit, my battery life is phenomenal. Much better than when I first got it. I suspect the battery issue was causing some drain as well, even when it wasn't restarting. The attached screen is still with 35% battery left.
Click to expand...
Click to collapse
Which bloat apps did you exactly remove?

drmodify said:
Well my problem is that the battery isn't charging, I get a battery with a red "X" mark when the screen is on but when it is turned off, its charging well but very slow and when it reaches 99% it never goes to 100%. Could it be possible I have the same problem as you guys? no random restarts for me just the issue of sucky battery life (3 hours on wifi) and not charging
Which bloat apps did you exactly remove?
Click to expand...
Click to collapse
Are you using the stock Samsung charger? Just plug it into the wall and it should be fine. Don't charge from the computer or use a different charger

Got that same problem. My tab will only charge up to 60% under 6 hours. Batterystatus app shows that my 2amp wall charger is just charging at 300mah +/- . Tried my power bank, same issue. Changed the cable and the reading from the wall charger is 1800mAh , could top up the battery in 2hrs

DUHAsianSKILLZ said:
Are you using the stock Samsung charger? Just plug it into the wall and it should be fine. Don't charge from the computer or use a different charger
Click to expand...
Click to collapse
Using wall charger. Never charged via pc...
Any Ideas?

I have experienced this. Flickering of the screen which eventually leads to reboots. Got it fixed at a samsung service center. You rooted it but you're on stock ROM right? I think there's a problem when we root it and stick with the stock ROM. When I rooted my tab again, certain apps started FCing which lead to lags. So I'm gonna wipe this and start from scratch.

Battery drops from 50% to 0%

Hi
My Z1C is 2,5 years old. I had a custom rom with locked bootloader. About a month ago it started to drop the battery capacity very fast. Today I wanted to speed up the drain and it took 8 minutes of GTA:SA to drop the battery from 65% to 0%. It was dropping slowly from 65% to 50%, then fast to 38% and it shut off at 38%. Then it has completely no power, when I tried to power it on only red led blinks. In normal usage it can drop from 50% to 0% in a half of hour, even when I just check the time.
Xperia Companion repair didn't solve the problem.

Reflash the custom rom and check if this dont work then battery damaged u need to buy new one. Coz battery after 2years of use loses its capacity.

I reflashed it and didn't work. Now I'm using stock rom flashed by Xperia Companion for a week and it also didn't solve the problem. AccuBattery shows that the estimated battery capacity is just 756mAh after a 0-100% charging. I think I will try replacing the battery, hope it will solve the problem, otherwise I will have to throw a fully working and still almost as new looking phone 0_o

I too had Same problem just like yours... Replacing With New battery helped me. But make sure battery is Genuine.

Now I see that the plastic frame is deformed because the the battery has grown up a bit. I can easily put my nail between this plastic frame and the aluminium frame ;d
So I need to buy a new battery, plastic frame, back cover, USB cover, bottom speaker cover and a back protector film. I hope it's worth it.

If the back cover and the other things you mentioned are not damaged you shouldn't buy them.
I had the same problem, buy a new battery and a back cover sticker, with 15€ you will revive your z1c
Notice also that the phone is old, buying things worth 50€ is not a good deal

I bought it all for about 19€. A back cover with a sticker was same price as a sticker only so I bought it

Hey everybody,
I´m new here but read some very heplful post before. So now I have a real issue with my device, same like you.
My Z1c turns off when 50% of battery is used. It mean I can use my phone from 100% to 50% and then it drops to 0% or from 65% to 15% and then 0%...
I read the linked articel from androidpit.com here on xda about battery calibration and I wanted to ty it soon. I relly hope that will fix my problem...
But I´ve noticed something different too.
I dont know if you have the same issue or not but maybe some of you can help me.
I´ve noticed that when I open file commander app and tap on internal storage there are no folders... it says it´s emtpy, no foldes nor files, that´s a little bit weired I think.
And seconde thing I´ve noticed.
When I look up the storage usage in settings, android is calculating App, pictures, audio, downloads, cache data and also misc. but when its finished the misc. section isn´t there anymore I wonder if its normal or not.
In my opinion it´s not usual that the misc. section disappears.
I hope someone can help me with my issues and give me some advice to fix them.
Thanks for your help and I apologize for my bad english...

ryanflow said:
Hey everybody,
I´m new here but read some very heplful post before. So now I have a real issue with my device, same like you.
My Z1c turns off when 50% of battery is used. It mean I can use my phone from 100% to 50% and then it drops to 0% or from 65% to 15% and then 0%...
I read the linked articel from androidpit.com here on xda about battery calibration and I wanted to ty it soon. I relly hope that will fix my problem...
But I´ve noticed something different too.
I dont know if you have the same issue or not but maybe some of you can help me.
I´ve noticed that when I open file commander app and tap on internal storage there are no folders... it says it´s emtpy, no foldes nor files, that´s a little bit weired I think.
And seconde thing I´ve noticed.
When I look up the storage usage in settings, android is calculating App, pictures, audio, downloads, cache data and also misc. but when its finished the misc. section isn´t there anymore I wonder if its normal or not.
In my opinion it´s not usual that the misc. section disappears.
I hope someone can help me with my issues and give me some advice to fix them.
Thanks for your help and I apologize for my bad english...
Click to expand...
Click to collapse
Hi
I tried one full discharge and then a full charge when the device was powered off and it didn't work. I bought the parts from aliexpress and a local shopping website so I will get them all in a month, then I will replace them, do some tests and post the results here.
About the files, you can try another file manager or clear file commander's data. I use the MK Explorer.
Next question, you just don't have any misc files, but the system has to search them so it appears at the beginnging. If you remove all files from the download folder, it will disappear too

I calibrated the battery and it shuts off at 0% properly, but its capacity is still 700mAh

The battery I bought turned out to be 14W10, so it's older than the original one... And it is complete garbage with 100mAh capacity (power off at 95%, lol).
I need another one.
Is it possible to get a genuine battery produced in 2015+?
I found these 17W, are they fake?
http://allegro.pl/ShowItem2.php?item=6978618040
http://allegro.pl/ShowItem2.php?item=6994928458

I bought mine 4 weeks ago on amazon. But I am not not sure if you can buy there: https://www.amazon.de/gp/product/B01MZ8RSCK/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

It is 2500mAh, I don't want my phone to explode

This is only the battery capacity I think. Yes, I was wondering also because the original has 2300. But for me it is working now.

Hi again,
I bought a new battery, maybe it's genuine, maybe not, I'll never be sure. It looks legit anyway. It came without NFC sticker and it was produced in the half of this year. It is running well from the beginning, it took me almost two hours of playing GTA:SA on max settings with 100% brightness and GPS turned on to drop the factory loaded 43% The first result of time with regular usage is shown in the screenshot (stock rom):
AccuBattery stats
Battery usage
Looks good Hope my Z1C would work fine for another year or two

tau45 said:
It is running well from the beginning, it took me almost two hours of playing GTA:SA on max settings with 100% brightness and GPS turned on to drop the factory loaded 43%
Click to expand...
Click to collapse
So your mobile got a second life.

Downgrading to a 4.4.4 Cyanogen Rom cured this for me permanently. Still I am trying to find a 5.x or better Rom which has no battery issues...

Hey @jho55, does it still work fine for you?
My phone now needs definitely a new battery.
It turn off at 95%...
@tau45 which battery have you bought?
When I replace it, do I need to flash the Rom again?

ryanflow said:
@tau45 which battery have you bought?
When I replace it, do I need to flash the Rom again?
Click to expand...
Click to collapse
I bought
http://allegro.pl/ShowItem2.php?item=7030978271
Because I could collect it in my city and check it. I had to stick the NFC sticker to this but it was no problem.
You don't need to reflash the ROM

ryanflow said:
Hey @jho55, does it still work fine for you?
My phone now needs definitely a new battery.
It turn off at 95%...
@tau45 which battery have you bought?
When I replace it, do I need to flash the Rom again?
Click to expand...
Click to collapse
It is still working for me. I also bought the following. Especially the toolkit really helps:
tools: https://www.amazon.de/wortek-Univer...coding=UTF8&psc=1&refRID=WFD1G0EEM8P9XZS014SX
glue: https://www.amazon.de/Dichtung-Akku...coding=UTF8&psc=1&refRID=WFD1G0EEM8P9XZS014SX
You do not need to flash anything again. If you use NFC, you need to add the antenna on the new battery. I am not using it and I will never do, so I just kept it on the old battery.

nfc problem

I need to have nfc on for a personal device i'm using. However my leather case holds my contactless bank cards in the front of the case and when you fold it back to look at the screen this triggers it again .. please see screenshot. How can I turn it off for the cards ?

felixthecat said:
I need to have nfc on for a personal device in using. However my leather case holds my contactless cards and when I bend it back to look at the screen this triggers bed. How can I turn it off for the cards ?
Click to expand...
Click to collapse
Use English language?

Hi i can see your using freestyle libre for the s9 also.
Ok facing some issues whereas as my battery power level goes down, its harder to scan the sensor. I'm on stock rom and kernal.
Makes it really inappropriate at times when i cant scan my sugar level as battery is low. Dod you face this? Is so What kernal/rom did you use if you managed to correct the issue

m_a_iqbal said:
Hi i can see your using freestyle libre for the s9 also.
Ok facing some issues whereas as my battery power level goes down, its harder to scan the sensor. I'm on stock rom and kernal.
Makes it really inappropriate at times when i cant scan my sugar level as battery is low. Dod you face this? Is so What kernal/rom did you use if you managed to correct the issue
Click to expand...
Click to collapse
Hi! I've the same issue with NFC stop working when battery level drops below about 70%. Very frustrating (and a bit dangerous too for us with diabetes and Freestyle Libre).
Any suggestion to solve this would be much appreciated!

ekatoma said:
Hi! I've the same issue with NFC stop working when battery level drops below about 70%. Very frustrating (and a bit dangerous too for us with diabetes and Freestyle Libre).
Any suggestion to solve this would be much appreciated!
Click to expand...
Click to collapse
I've not managed to solve it. I just carry around a power bank now so can plug it on charge. As soon as it's on charge the nfc works again.
Hope Samsung resolves it soon. Must be a nfc power saving feacture

m_a_iqbal said:
I've not managed to solve it. I just carry around a power bank now so can plug it on charge. As soon as it's on charge the nfc works again.
Hope Samsung resolves it soon. Must be a nfc power saving feacture
Click to expand...
Click to collapse
Facing same issue since month and seems to become more and more unstable. Any update on that topic? Hope it will be fixed at least with Android 9.0.

Hello, I have a samsung s9 + and I have the same problem as you. The NFC does not work below 70% battery

The same thing happens to me, I'm from Argentina, I have a stock rom, and it's more or less the 73% of the battery that the NFC stops working, do you know something if Samsung said something about it?
Tks.

i tried something else now. When you have your phone on charge, nfc works without problem (Under 70%)
when you pull the cable off, stops working.
Manufacturing date is http://prntscr.com/m0z97n

Hi People,
I have the same problem with NFC with lower battery levels and Freestyle Libre. I haven't upgraded to Android 9 yet but I am considering. Maybe there it'll be better. However NFC for payment works even with 1% battery level, no problems there. So there is something more sinister at work here.
Keeping my fingers crossed for a solution
Cheers!
UsualSuspectReaL said:
i tried something else now. When you have your phone on charge, nfc works without problem (Under 70%)
when you pull the cable off, stops working.
Manufacturing date is http://prntscr.com/m0z97n
Click to expand...
Click to collapse

Guys, when battery drops at 15%, NFC works again. LOL?
Anyway, i was on repair center and i told them everything, they check my device and waiting for replacement in 4-5 days..
So, GO and do the same.

UsualSuspectReaL said:
Guys, when battery drops at 15%, NFC works again. LOL?
Anyway, i was on repair center and i told them everything, they check my device and waiting for replacement in 4-5 days..
So, GO and do the same.
Click to expand...
Click to collapse
Maybe at 15% battery saver turns on, which disables something that is stopping NFC working

*Detection* said:
Maybe at 15% battery saver turns on, which disables something that is stopping NFC working
Click to expand...
Click to collapse
I don't know bro..
You have the same problem? If yes, tell me manufacturing date of your device.

UsualSuspectReaL said:
I don't know bro..
You have the same problem? If yes, tell me manufacturing date of your device.
Click to expand...
Click to collapse
I don't use it but have tested it and it worked fine with any %

Hi, having same issue here. Samsung replaed first S9+ ad now i'm having issues with my second S9+. Problem gets worse. Comes a time when it will not work at all no matter what its battery level. Running Android 9. Looks like a hardware problem as my LG G4 works fine (always have) and my Motorola 5s+ works like a charm. Its a Samsung problem. Anyone have a workaround? I have a facebook group for diabetics and am telling other libre users not to buy Samsung products.

Evening all anyone get nfc working? I'm on One Ui S9 not rooted and trying to read & write some NFC Tags but not getting any luck tried a mates S7 edge and that seems to work fine. Any ideas

Battery failure

Just wanted to ask if anyone else has experienced a "swelling battery" problem - I noticed my battery life starting to get worse, then one day the display actually began detaching from the frame - turned out my battery had started "bulging"/swelling, so much so that it had pushed the screen off the frame (phone was basically disassembling itself).
long story short, I was in HK and had the battery replaced at a stall in Sin Tat Plaza. New battery seems ok. Just curious if anyone else has had a similar battery failure.
In case anyone reading this is experiencing anything similar, this could be an option:
https://www.ifixit.com/Store/Parts/Moto-Z-Play-Replacement-Battery/IF368-005-2
If this had been available when it happened to my Z Play I would've gone for this option (since the swelling battery had pushed the display off the frame already, the hardest part of the job was already done!)

weilt said:
Just wanted to ask if anyone else has experienced a "swelling battery" problem - I noticed my battery life starting to get worse, then one day the display actually began detaching from the frame - turned out my battery had started "bulging"/swelling, so much so that it had pushed the screen off the frame (phone was basically disassembling itself).
long story short, I was in HK and had the battery replaced at a stall in Sin Tat Plaza. New battery seems ok. Just curious if anyone else has had a similar battery failure.
In case anyone reading this is experiencing anything similar, this could be an option:
https://www.ifixit.com/Store/Parts/Moto-Z-Play-Replacement-Battery/IF368-005-2
If this had been available when it happened to my Z Play I would've gone for this option (since the swelling battery had pushed the display off the frame already, the hardest part of the job was already done!)
Click to expand...
Click to collapse
dont use HK battery it's fake battery and getting your device to slow. your components will become damage in the future as the technician said

JR Bautista said:
dont use HK battery it's fake battery and getting your device to slow. your components will become damage in the future as the technician said
Click to expand...
Click to collapse
Hi,
thanks for the warning, but so far the thing is working fine. The battery swap was done in front of me so I could see what was being done. The replacement battery had Motorola markings etc. and as far as I could tell it was an original.

weilt said:
Hi,
thanks for the warning, but so far the thing is working fine. The battery swap was done in front of me so I could see what was being done. The replacement battery had Motorola markings etc. and as far as I could tell it was an original.
Click to expand...
Click to collapse
in the first place so good but in long run ? is not good bro

JR Bautista said:
in the first place so good but in long run ? is not good bro
Click to expand...
Click to collapse
thanks for the warning!
but as far as I can tell it's basically a Motorola battery, so I am not worried (Motorola's not such a big brand that people are likely to be making "fake batteries" for them - I'd actually be more worried about aftermarket iPhone or Samsung batteries)