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YJT

Hello great sony people out here, today I am here with a newly discovered issue with my xperia e3 d2202. I use both sony original charger and power bank (not from sony ) to charge my phone. Today I had noticed heating near camera lens and near nfc logo area while charging with my power bank. For clarifying things I immediately disconnected my power bank and waited for half hour but still heat was same, so I switched off my phone, within 10 minutes its backed to normal (no heats), so to further clarify the things I connected sony original charger to my phone while it is still switched off, it started charging normally, but after 10 min heat backs again, however none of the performance issue or error message has been noticed while all above phenomenon, but now phone has no heat while charging with power bank or charger. Everything is normal.

So could any one explain me what was that strange phenomenon happen to my phone?

I checked my power bank voltage with multi-meter it was 5.36 volts is it too much?? Can anyone tell me what maximum volt this phone can resist? Thank you.

cpuz reading when norma

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cpuz reading when heated

Uliwooly

Boot on safe mode and see if you experience the same issue.

Uliwooly

This is how to boot on safe mode

http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008

YJT

@Uliwooly thanks for reply, i have tried safe mode but same problem,

one thing i had noticed that phone heats while charging when the phone battery is less than 50% and when it reaches 90 percent its backs on normal and no heat till 100%. and their is no heat on battery area but heating is on where Sim slot camera and NFC is situated.

YJT

one thing i will repet here that my charger output is 5.09 volt and powerbank output is 5.36 volt, so what is MAX volt xperia e3 d2202 can resist.

Uliwooly

let's see if @Rickard can comment on this

Rickard

Hard to say what could have caused this but the phone has builtin protection against overheating so it doesn't sound like it was getting too hot as you would have got a message about it and the phone would have shutdown. It might just have been an app causing high CPU usage and since removing the charger didn't help but a restart did it sounds a bit like that may have been the case.

I'm afraid the specification i have doesn't say anything about tolerance levels but i would not recommend that you use 3:rd party chargers with higher voltages than 5V. I'm not sure but i believe the general tolerance for USB voltage is +/- 0.25V so 5.36V sounds high to me.