Xperia J switching off randomly

[VarunSharma]

I've been using this phone for 4 months now. Its started doing this just a week ago

The battery reaches 20% and the phone switches off. I try to turn it on but then the red LED blinks thrice. I need to connect it to a charger and then it turns on just fine.

It used to reach till 7 or even 5% before. Now it just switches off at 20%. It's become pretty inconvenient for me so if anybody can help me with this problem its really appreciated

[szmig]

Maybe its something to do with apps running in the background? Have you tried going to - Settings > Power Management > (enable) Extended Standby Mode.

[Alexander1]

Sounds strange that the phone turns off with 20 % battery level. Try uninstall any task managers or antivirus apps.

Remove the battery for a while and charge to 100% when phone is turned off.

If the problem persist I suggest that you update/repair the phone software using PC Companion:

http://www.sonymobile.com/update

[VarunSharma · Accepted solution]

Sorry should have posted this before. I managed to fix the problem. It was battery calibration. I had to re-calibrate it. It works just fine now. I can use the phone till its drained below 20% too now.

Thanks anyways for your help szmig and Alexander