The battery life for most devices is two to three years. If your phone is no longer holding a charge, chances are you need to replace the battery. On most devices the battery can easily be replace by removing the back of the phone. Apple devices and a few Android phones require the device be disassembled and the new battery soldered or heat fused onto the circuit board. Either way, the professionals at Mobile Madness can have you fixed up in no time at all.