Software draining more than 40% of battery life


Staff member
Please help ! I have a problem with my Xperia c. In battery consumption phone radio is killing the battery more than 40% always and when battery reaches 30% it drains very fast till 14% . And I can install apps on only 1 GB from the 4 GB internal memory . Why like this ?
Do I need an update or what ?
thx !