Make sure to use a 12W or higher power adapter. To do that. How Long Does It Take To Restore From Icloud Backup Icloud Backup Restoration There should be no harm in aborting and re-starting both devices note that both should be on external power during this process and optionally on same Wi-Fi network for data migration both have to be on iOS 124 for the full data migration though which is a new optional step. Iphone quick start taking a long time . Connect the new iPhone to the computer and click on Backup Restore. Connect the Lightning to USB 3 Camera Adapter to your current iPhone. Connect the Lightning to USB 3 Camera Adaptor to power through its Lightning port. This does rely on bluetooth and wifi to enable a continuity connection to share the status of a backup and initiate the backups restores. More info on Quick Start. Quick Start occupies both devices so make sure that you choose a time when you wont need to use your current device for several minutes Have a terri...