https://arstechnica.com/information-technology/2021/03/verizon-tells-users-to-disable-5g-to-preserve-battery-then-deletes-tweet/

Verizon has spent years hyping 5G despite it bringing just a minor speed upgrade outside the limited areas where millimeter-wave spectrum has been deployed, but the carrier's support team advised users yesterday to shut 5G off if their phones are suffering from poor battery life.

The tweet from VZWSupport, now deleted, said, "Are you noticing that your battery life is draining faster than normal? One way to help conserve battery life is to turn on LTE. Just go to Cellular > Cellular Data Options > Voice & Data and tap LTE."