OK, I bought a S10+ because my S8+ crapped out. I am currently deployed in Iraq and I have AT&T service back home, so I got the new phone put the AT&T sim in it and no wifi ,calling icon at all. I cannot download one and some apps is none exsisting on the app store. I have a new sim card and I had AT&T activate it to the new phone and still no luck. I have tried everything changing the APN, setting up the network parameters, so if you can help I would really appreciate it.
Is your S10+ an unlocked or carrier device?