I would have kept using mine if it didn't have issues dropping calls and also certain app incompatibilities that began to be frusterating. It is actually a lot better of an iphone than my newer SE2. It is much faster on the OS it runs than this SE2 on ios 15. Spotlight search is instantaneous on the old SE. On the SE2 it might hang in spotlight for 5 seconds or longer.
I use both 1st and 2nd at the same time. 1st as phone, 2nd as a PDA.
I'm still on iPhone 7+… It gets a new battery every 2-3 years and works great. I love how it has a big screen but feels much smaller and thinner in my pocket than any modern iPhone. I was really looking forward to this new "SE4", but the 7.5W charging and lack of magsafe is a deal breaker for a phone that in my country costs ~900 usd.