Iphone4 SMS export does not jailbreak?

Export SMS backup with the help of third-party assistant software such as pp assistant and itools.

The first step is to install itools on the computer (take this assistant as an example);

Step 2, connect the iPhone to the computer;

Step 3, switch to the "Information" tab;

Step 4: Check the SMS that needs to be exported and backed up, and click "Backup".