Trying to stay $150-300 but that's becoming harder and harder. Used but good condition is fine.
I was thinking maybe a Galaxy 7s or 8s. An iPhone 7 isn't much of an upgrade from what I can tell, but maybe these Samsungs aren't either.
She doesn't use her phone for much, but would like bigger than the iPhone SE she has now. She had a Galaxy 4s before, and she likes that line.
I also looked at the Pocophone and Huawei phones, but I don't think they are CDMA Verison compatible.