I got a new iPhone today to replace my broken one and I am trying to restore the backup from iTunes. I had around 50 GB of content in my old iPhone.
The remaining time to finish the backup started in 2 hours, and is steadily increasing (to about 27 hours at the time of this post).
Is there something wrong with my system?
I am recovering an iOS 9.3.2 backup to an iPhone 6 (64 GB) on a Mac running macOS 10.11.6 (El Capitan) on a 2013 iMac. I am using the lightning cable to restore the backup, and not over Wi-Fi.