Something seems off?

So I'm on my third s21 ultra. What can I say I just love it.

Anyways the other day my ultra broke so I went on Amazon and purchased a renewed excellent condition unlocked one. Got it and threw sim card in it. And I noticed my 5G icon is different. Different then my wife's s23ultra and different then my last s21 ultra I had. What do you think ?

I am on cricket. I also did not contact them about activating a new phone. My sim card just worked in this new phone so idk