please i have sonyericsson k550i phones drain batery quickly,even if you charged batery full after recieving more than 10 calls the batery will be empty unless i charge phone again,i changed batery but still the same problem i also changed charger but still,please help in avance

change charging i bro

Hello
Measure current in off and on state.
post current values in any state(befor powering ,after powering,after entering in normal state,in screen saver mode)