How to import the data from the old iPhone6 into the new iPhone8?

Because it is a new mobile phone, we can use backup and then migrate the imported data:

Click Settings to erase all data of the mobile phone, and the new mobile phone can be operated directly;

Restart the phone, then enter the application and program interface, and then click "Restore from iTunes backup" or "Restore from iCloud cloud backup".

If necessary, we can also use Xin Kai Mobile Phone Recovery Master to scan the relevant data in the backup, and then export them to the computer for backup and preservation.