BlackBerry Classic
Unlocked on T-Mobile network
Software Release: 10.3.3.1463
Even when the device is idle with no apps operating the System use is always high. I have performed a factory reset which has not solved the problem. The battery drains in a matter of 4 hours or less, no matter how much or how little the device is used. What other steps can I take to resolve this? It only seems to have happened once I received the 10.3. update.