All our current unlimited plans include 5G.1 Plus, with AT&T Unlimited Your WaySM, each person on your account can choose their perfect unlimited plan. AT&T may temporarily slow data speeds if the network is busy.
You have to use the SIM card that came with your 5G device.
Your 5G device will still work when you’re not in a 5G area. But, if you’re in an area with 5G, you must have an eligible plan to take advantage of 5G.