- Connect the two phones to a Wi-Fi network and get yourself logged into your Apple ID account on the two of them.
- On the old device, launch “Settings,” then click on your Apple ID profile (this is your name and photo at the top of “Settings.”
- Click the iCloud tab.
- Click Contacts, and when “What would you like to do with existing local contacts on your iPhone?” is visible, choose “Merge.”
- Now access contacts on the new device and refresh by dragging downwards, the contact will be visible immediately.