Battery Draining

[vagu]

I'm new to Sony. I bought Sony Xperia M. It withstand battery without sim card for about 80 hours. But if i insert a sim card, it is draining within 12-15 hours without any usage even the non usage of display. Please give me suggestion for this problem.

[Uliwooly]

How is your network coverage? How many apps and or services are you syncing?

[vagu]

Network coverage is in good manner. Also i checked another network sim cards also. The same problem for all sims. I restore my phone. After that there wasn't any aplications which are installed by me. In that case also battery is draining as usual. Also my screen consumes higher percentage of battery (40-70%) while working in screen. But my battery is draining even in screen off condition with stamina mode. Please give me a solution. 

[Uliwooly]

Re-install the latest update with PCC and check again 

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

[bubimir13]

Replace your SIM card, maybe it will solve, especially if it is older one