iPhone 6S plus
I was told today by a phone technician that my Australian IPhone 6 S Plus with IOS 15.4 would not work properly when I take it to Italy and use an Italian SIM card next month. He said that this model is now superseded. When I said that I thought that was only IPhone 6 he said both. My phone is unlocked and I don’t want to replace it if I don’t need to. My research suggests he is mistaken so I would appreciate expert advice.
iPhone 6s Plus