AT&T launches 5G network: What you need to know as Verizon, T-Mobile, Sprint race to catch up

So what does it look like? There's been a lot of talk about 5G. Compared to 4G LTE, 5G is 20 times faster. And until 5G hits your home, you can dramatically speed up your current connection with a little-known secret setting. You don't need to be a techno wizard to do it, either.