Phone won’t transfer to 17

Trying to transfer 12 pro(256GB)to 17 pro (1TB). Tried side by side received message data couldn’t transfer. Attempting to transfer via iCloud backup. Said I needed additional iCloud space. Purchased additional 2TB for 9.99. Phone has been backing up for hours, still only at 46%. Please help



[Edited by Moderator]

iPhone 12 Pro, iOS 18

Posted on Sep 20, 2025 3:37 AM

Reply
1 reply

Sep 20, 2025 9:07 AM in response to JB_4_6_8

Wait 5 hours is all you can do.

You have a lot of data stored on the phone. I have 64GB phone and a lot of sync’d cloud storage. Backup takes minutes.

If you now choose a 1TB iphone I have no idea how backing that up over WiFi is even sensible.


Make sure your wifi has the best connection if you have a choice of 5GHz

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Phone won’t transfer to 17

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.