A:AnswerIf you click on the specifications link, and read through them, you will see that this is a 4G LTE phone.
It will work on a 5G network, but will never achieve 5G speed.
A:AnswerWell because it’s a Verizon phone you must have service 60 days with Verizon in order to have the phone unlocked so you are able to switch it over
A:AnswerTCL Signa uses a NANO Sim card. If that is what is in your Blackberry Classic, it should work The Verizon support section contains some instruction on replacing the provided Sim card with your existing card.