What is the black screen of Apple's 5s mobile phone that I just bought for a month?

Possible causes and solutions of iphone5s white screen;

1. If a black screen appears after downloading the software, it is recommended to connect the iPhone to the computer first, and then use the PP assistant /itools and other software on the computer to open the application of the mobile phone and uninstall the software. Then try to open it again.

2. The ultimate trick to deal with the iPhone5s white screen crash is to resume the upgrade/refresh. The specific method is as follows:

1) First, open iTunes on the computer, and then connect the mobile phone to the computer with a USB cable.

2) At this time, the iPhone5s will keep a white apple, and at the same time, press and hold the home button (the small circle at the bottom of the screen) and the power button (the power button) of the mobile phone.

3) Wait a minute, the white apple will disappear, and the screen will turn black, just like turning it off at ordinary times.

4) Then, only release the power button and highlight it without releasing the home button. After about 10 seconds, there will be a reminder waiting for the iTunes connection signal.

5) After connecting to iTunes, users who have backed up can find the button to restore the device here and click Restore. If the user does not back up his iPhone5s, he can check whether there is an update by holding down the shift key on the computer keyboard, and then choose the downloaded firmware package to update or upgrade according to his own situation.

If you can't even brush the machine, you can only take it for after-sales maintenance. Under normal circumstances, as long as it is confirmed that it is not artificial, there is no need to send it for repair during the warranty period.