How do I know if my battery is the problem?
Firstof all, you need to identify why your battery performance has decreased: isit the Android system's calibration or the battery itself? We'll move ontocalibration in the sections below, but you should check if your batteryitself is damaged first. If your phone has a removable battery cover , turn off your phone, remove the cover and inspect the battery. Look for bulges or leaks. In the image below, you'll see what a normal battery looks like next to a swollen one. If your phone doesn't sit flat on the table anymore, that could also be a sign of a swollen battery. Should I calibrate the battery? If you're satisfied that the battery itself is not the problem , you can move on to the steps below. If you think your battery might be the problem (even after trying to recalibrate it), we'd advise you to take it to a repair shop for an expert's opinion. If it turns out you need to replace the battery, go with an original or a reliable thir...