In the US, Verizon, AT&T, and T-Mobile all have 5G available nationwide, but the best 5G coverage will be found in and around major cities. If you’re curious about what kind of 5G performance you’ll see with iPhone 12, that will vary depending on where you live and your carrier. Follow along for how to turn 5G on/off on iPhone 12, including how to keep it on permanently or turn it off completely.
Apple is using a “5G Auto” setting it refers to as “Smart Data mode” as the default to give users a balance between network speed and battery life. Next-generation 5G cellular service is one of the key features of the iPhone 12 lineup.