Battery drain

[shriyanshk]

It was a normal day and I used the phone normally. As I reached office I usually start the airplane mode to save battery. But today after updating Bing apps, when i started the airplane mode my phone had 70% battery and after 6 hours I see battery ahs reduced to 3%. What to do?

 

[anon(7900571)]

Do you have windows phone 8.0 or 8.1 developer Preview on your Lumia 1520? I will also suggest you to perform a soft reset(this wont erase any of your data ).To do so hold down the volume down + lock button at the same time until your phone vibrates and reboot itself.