iPhone 12 Pro How do I know when "Transferring data to iPhone" is done?

[Cotypubby]

I just got my new iPhone 12 Pro today and I used the Quick Start option to transfer over all my data from my iPhone 7 to the new 12 Pro. It all seemed to work, I see all my contacts, apps, music, settings etc on the new phone, but whenever I turn on the screen on the iPhone 7 it says "Transferring data to iPhone. Keep your other iPhone nearby and connected to power until the transfer is complete." But there is no countdown left. A couple hours ago it said "5 minutes remaining," but then now all it says is the Data transferring message. Will it say when it's complete?

eta: Hmm, OK actually when I unlock it it still says "5 minutes remaining." It's said that for hours... Guess I'll wait a bit and see?

 

[treyhunnid]

Takes a while. Please do it over WiFi

 

[Cotypubby]

Thanks. I guess I'll just let it continue overnight. It's been saying "5 minutes remaining" for over 5 hours now, but it looks like everything is on the new phone.

 

[LonestarOne]

In my past experience, the time estimate is fubar. Although, in my case, it usually finished more quickly than indicated.

 

[zooby]

Currently having this problem... the new iPhone seems to work fine and I see all my apps/contacts etc. Watch is paired. But it says on my old one 4 minutes remaining and it has been that way for 5 hours. Should I wait it our or did you cancel or restart your old phone?

 

[Cotypubby]

I ended up just hitting Cancel on the old phone after it was stuck like that for 7+ hours, it seems like everything worked, I’ve been using it since then and everything seems fine.