Using a Verizon SIM in another iPhone - is it possible? My wife’s Verizon iPhone 6 died last night and I’ve been scrambling trying to fix it or come up with an interim solution.

Can I take her SIM card out and put it in any unlocked iPhone and it should work? Or does it have to be a Verizon iPhone? I know it won’t work with a regular AT&amp;T/Sprint/T-Mobile right? Trying to locate a spare phone now...

Also last night when I was chatting with Apple Support, I mentioned that my wife has an old iPhone 5. Tech said it wouldn’t work with the latest version of iOS or something, so it would have to be a 5s or later. Any ideas what this might mean? 

I just checked and she has iOS 7.7.1 on it. If I can just put the SIM in that and she can use it to make calls and texts while her phone is getting fixed, that’s all I want at this point.

I plan to go into the Apple Store right when it opens to try to get a walk in appt at Genius Bar. Any other advice appreciated, thanks!