hello i just got a iphone 12 pro and not all my stuff was downloaded how do i transfer it back to my new phone from my old

Transfer Data from old iPhone to new-

Do you have a backup created either on iCloud or on your computer?

Method 1 - Backup your old iPhone on your computer like this ➔ How to back up your iPhone, iPad, and iPod touch - Apple Support and then Restore your new iPhone from that backup like this ➔ Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

Method 2 - The Quick Start method and here is how to do that ➔ Use Quick Start to transfer data from your previous iOS device to your new iPhone, iPad, or iPod touch - Apple Support

Axel F.

I recommend that you go back to that store and take both iPhones with you. Ask them to transfer the data for you.

Axel F.

You might need to factory reset your 12 pro, to do that go to SETTING>GENERAL>RESET>ERASE ALL CONTENT AND SETTINGS..........But most importantly make sure that you do not have anything too important such as new photos or anything valuable to you on your 12 pro.