This happens when Android phone backs up SMS to sim card, so it cannot be backed up. How to solve it?

Landlord, there are a lot of short messages on mobile phones now.

Sim space can generally hold forty or fifty cards.

It may be caused by too many backup messages.

You can use the PC version of the app to back it up.

You can use it to back up a lot of content.

The backed-up data is also complete and will not be lost.

And the operation steps are also very convenient.

Just connect the computer with a data cable, and after success.

Just click on the data backup in the toolbox.

If you want to restore, just click the data in the toolbox to restore.

I hope I can help you.