What happened when iphone6 turned on the information white screen?

It should be caused by the cell phone jam.

It should be the problem caused by the stuck mobile phone. It is not recommended to upgrade the latest system. Apple's old mobile phone will be stuck if it is upgraded to the latest version, but it won't work unless it comes up. Each model of Apple's mobile phone is generally the most suitable system when it leaves the factory at that time. It is not recommended to upgrade the new version without affecting the use.

Cleaning the phone memory again will improve the stuck problem.

If you don't move in the SMS interface for a long time, it is likely to crash. It is recommended to forcibly shut down and restart:

Press and hold the home button and the power button at the same time until the phone is turned off, and then press and hold the power button to turn it on.

If it still doesn't work, it is recommended to refresh the system.