[Karthika KK]

Hey Hi,

So I have this L520 for more than a year. From yesterday I'm noticing this weird problem. My L520 would be fully charged for the day. Usually the battery stays for the whole day, but yesterday the phone just switched off by its own and when it restarted back with a whole battery drain to 18-20%. And I charged it back to full. Though this automatic rebooting of my L520 was evident for more than a month, it kinda subsided from past few weeks since I deleted few apps and has kept a paper under the battery.
Now again few minutes back I experienced the same (the phone rebooting to a battery drain) when my battery was fully charged. Although when I restarted it back, the battery is fully charged. Please someone help me to understand the issue.
Also let me know if it's because I'm using Lenovo tablet USB charger from yesterday to charge to my laptop. Please help.

TIA

[Torcher Death]

First... does the back of your phone heat up real fast ??
If so, then you might have to do a hard reset & optimise your phone by opening all the apps you have atleast once.... worked for me.
Other generic solutions include, turning off background tasks & location.

[Jackjones007]

Will suggest take a hard reset. But from where u get such weird ideas like using paper & all.

[Karthika KK]

It does get heated up when I use two to three apps simultaneously, Otherwise it's just a normal. No issues. This problem freaked me out. I thought might be I used the USB charger of my tab to charge it.
Hard reset is in full wipe out right? :/ I already had to do that few weeks back since I almost lost my phone. After which this heating problems and rebooting got lessened. Would you recommend to do it again?

[Karthika KK]

Will suggest take a hard reset. But from where u get such weird ideas like using paper & all.

The paper idea was suggested by most of the members who post in Microsoft forums :P My battery got loosened up due to constant switching of sim from my phone to tab.

[aziouazrayes]

OK, try a soft reset first (google it) it might solve the problem (I had this problem too and I did a soft reset and it's back to normal). If it doesn't work, try a hard reset. That will solve it for sure. Is it your original 1430 mAh battery?
Maybe instead of switching the SIM card between the phone and TAB all the time just enable INTERNET SHARING from the phone and use it to connect with yur TAB (if that's the only reason you keep swithing).

[BatteryLife]

Take out your battery, and place it on the table. See if it bulges out (not flat). To see more clearly, try spinning it on a table and see if it spins. If it does, your battery has a problem, grab a new one. If it is still flat, you may try to invest in a new battery (spare battery) and see if the issue still remain.

[Karthika KK]

Thank you guys for your suggestions will try that and update on as to what might be the issue. 😊