Huge battery drain after Jelly Bean upgrade
I am upragrade my Sú on Monday to Jelly Bean on Monday and ever since then I have noticed a huge battery drain. Phone was oridginally on o2, but now unlocked to all networks and used on another. Still upgrade with o2 firmware though.
Overnight, while left beside my bed, it lost 30% in 6 hours. This is with everything turned off. Wifi, data, gps, google now. That seems really wrong
I can even get through the day on one charge now. Any sugeestions. I'm thinkinf factory reset next. Any advice would be much apprciated