Online consultation of mobile phone problems

If it's not the battery, it's just the phone software. Go to maintain some writing software and try again. It should be no problem. In your case, these two are more likely. There is also a mobile phone card, which can't be opened if you have it, and can be opened if you don't have it. This is a problem with the power amplifier. The last one is the memory you can't open. Don't let it go. Two possibilities: 1. If there is something wrong with the memory card, try another one. Poor contact of memory card slot. Just wrap a few feet with something hard and then wash them with alcohol.