Why did the SMS become a number after BBK mobile phone backup was restored?

Hello, what software did you use for backup? This may be because your backup package is inconsistent with the format of the recovered mobile phone.

I have been backing up data with the PC version of App Store, and this software has never had such a problem.

You can use this software. First install this software on the computer, turn on the USB of the mobile phone for debugging, and after connecting,

There is a toolbox in the lower left corner of my mobile phone. Open the toolbox and you can see the data backup inside.

Then just select the content to be backed up, and then enter the toolbox when needed later.

Choose data restore, that's good, I hope I can help you.