How to activate iPhone12 and import original phone data?

My original phone is iPhone7 and the new phone is iPhone12, how do I import the original phone data into the new phone?

Solution 1:

Use Quick Start to transfer data to a new iPhone, iPad, or iPod touch

https://support.apple.com/en-us/HT210216

Use iTunes or the Finder to transfer data from your previous iOS device to your new iPhone.

https://support.apple.com/en-us/HT210218

Restore your iPhone, iPad or iPod touch from a iCloud backup

https://support.apple.com/en-us/HT203977