The iPhone is reportedly getting 5G in 2020
https://techcrunch.com/2018/11/03/the-iphone-is-reportedly-getting-5g-in-2020/
The first 5G phones are set to start arriving next year. Motorola plans to bring next-gen connectivity via a Mod for the Z3, and companies like LG and OnePlus have promised to deliver the tech baked into handsets at some point in 2019. iPhone users, on the other hand, may have to wait a bit longer.
The technology is, of course, an inevitability for Apple (along with everyone else, really), so it’s just a question of when. A new report from Fast Company (via the Verge) puts the timing around a year and half out.