SOLD: A1522 16GB iPhone 6 Plus for AT&T

[RE:up]

Looking for a phone for my 18 year old son. Lots of questions.

6 plus, or 6s plus?

storage capacity?

GSM, or CDMA?

Is it locked to AT&T?

Battery health?

He'll need a phone that can be used in Europe (Austria, Czech, Hungary) for a few weeks this summer as well as here in the US while at university.

Thanks!