To win the 5G marketing wars, AT&T has decided to brand portions of its LTE network as “5G Evolution.” These portions of AT&T’s network have received speed-boosting upgrades and should be faster than typical LTE, but AT&T isn’t doing anything that other carriers haven’t already implemented. And these are still, by definition, LTE technologies — not 5G ones. So this is exclusively about marketing, not about improving your phone.

Source: AT&T misleads customers by updating phones with fake 5G icon – The Verge