Stamina mode drains

[Hariharan]

Hai i  own xperia P from India>Tamilnadu>Coimbatore ,  Purchased a month before, while the day of purchase i was updated to  ICS to jellybean on the spot, iam facing serious battery drain on my mobile , I Disabled Wifi, Mobile data , completely for 2 days still problem is battery , the stamina mode never crossed above 10 Hrs remaining even in both stamina mode ON and OFF, did a hard reset , still problem preist  , my brighness leven is Manuall and  it is  10% , can you please help me out , my signal reception is good and i live near my providers tower , my signal strength is 100% , also my phone is not detecting any pendrives in OTG, i cheched  on ICS it worked but after upgrading to Jellybean this one is not even detected any pendrives (Scandisk - Less power consumption - No led - Pendrive 4GB), i checked the same OTG with Xperia S it worked ,so ultimately problem is on JB , please help me Sony Dears

Thanks and Regards

Greathariharan@gmail.com

[jackxperiaP]

after updating from ics to jelly bean did u do a factory reset?? it is must to do factory reset when upgrading to a new version ..

back up your contacts, messages, and the downloaded apps and then do a factory reset .. this eliminates mostly all the prob .. about stamina mode what it does is actually it calculates and studies how u use your device, and then shows the remaining time left in stand by .. it reduces even to 4 hours and that is not a problem while still the stamina mode is working.. if u want to reset it u can do it anytime by going to settings>apps>all>device monitor, eco mode contorller then click clear data.. 

to save battery

1. uninstall battery savers, task killers, antivirus

2. put in gsm only

3. disable access to location from settings>location service

4. charge your device 100% without break and use the device till it reaches 20% 

need to save more then root your device which does not voids the warranty http://forum.xda-developers.com/showthread.php?t=2335992 and install greenify from playstore https://play.google.com/store/apps/details?id=com.oasisfeng.greenify .. put all the background apps in greenify and it hibernates them when u lock the screen or the screen goes off !! it saves more power 

to unroot jus repair it with SUS or PCC ..

[Hariharan]

Thanks ,  now it seems prety good, please tell me how to share files using NFC using default apps