原帖由： Minho ,
The first thing to check is the condition of the battery. Use a battery utility, such as [http://www.coconut-flavour.com/coconutbattery/|coconutBattery] (for Mac) or [http://www.3u.com/|3uTools] (for Windows). It will tell you what the health of the battery is. Anything less than 70% of design capacity will require replacement. If the battery is fine, then you should do a proper backup while you still can and consider having the phone looked at by a repair shop.