Doubt they will turn off the 4g towers anytime soon so you should be fine using your 7 until you feel like you’re ready for an upgrade

My 14 pro was too much to bear as a couple months ago. But 7???

7 is a good phone. But I think upgrading to a newer phone would feel refreshing for you.

I finally upgraded from the 7+ a few months ago. IOS wasn’t current enough for some apps to run and the battery was fading fast. Got a 14 pro max and it is lovely.

I gave up lol, but not because there’s an issue in that phone. I used 7+ but changed 13 mini simply for its form factor.

4G still come in a long way, i don’t think they gonna shut it soon