I want to sync two iphones so that they merge all the data. How can i do that
I want to transfer data from my iphone 6 to iphone 12 pro max without deleting data of new phone
Turn on iCloud syncing and make sure both devices are using the same Apple ID.
Click on this link to learn how to 'Set up iCloud on your iPhone, iPad, or iPod touch' --> https://support.apple.com/HT208681
See step 3 on how to select specific items to sync.