If you’ve seen an ad for Apple’s new iPhone 12, you’ve probably heard that it supports 5G. The next-generation wireless networks promise incredibly fast downloads and uploads wherever you are, and if you subscribe to the right plan and live in the right place you’ll be able to enjoy it on any of the four major carriers.
But even if you opt for a pricey unlimited plan that includes 5G, the speeds you get might not be all you hoped for. That’s because there are two different kinds of 5G: sub-6GHz or “nationwide” 5G, and millimeter-wave or Ultra-Wideband 5G. In short: nationwide 5G is a little faster than LTE and Ultra-WideBand is ridiculously fast.