How to transfer iCloud backup on iPhone 12
How to Transfer iCloud Backup to iPhone 12 or iPhone 12 Pro
Turn on your new iPhone 12 or iPhone 12 Pro. Follow the on-screen instructions to complete the setup assistant by selecting your language and country, and choose whether to enable Location Services. When prompted, choose your Wi-Fi network.
Restore Data from Old iPhone – Options
When prompted to Set Up iPhone, tap on Restore from iCloud Backup.
Enter your Apple ID and password, and tap Next at the top right corner.
It will prompt you to agree to the terms and conditions. Tap on Agree in the bottom right corner.
You will now see a list of backups. Select the latest backup of your old device and tap Restore. Wait until the device has finished restoring from the backup. Please note that it can be a time-consuming process and depends on the amount of data contained in the backup and on the speed of your Internet connection.
When the restore process is complete, your iPhone will restart. Then it will be ready for use. You should also connect the device to iTunes to sync data not contained in the backup (such as music, videos, apps, and so on).
iPhone will also start re-downloading all your apps in the background.
You will also need to enter your password for your Apple ID, email, and other accounts, and voicemail again. The passwords are not restored to a new device for security reasons. However, if you want them to be restored then using the iTunes method above.
You should now be able to use your shiny new iPhone 12, iPhone 12 mini, iPhone 12 Pro, or iPhone 12 Pro Max. After the data has been restored, you can turn on your older iPhone and erase all the content and settings.
It is advisable to keep your iPhone 12 connected to Wi-Fi and plugged into a power source until the data from iCloud is downloaded to your device. The data is downloaded automatically from iCloud in the background.