Why does my lumia 635 say LTE and my wife's lumia 635 say 4g?

[Windows Central Question]

My Lumia is actually her old one and it never had LTE when she used it. What is the difference? If one is more significant, can I manually change it? We both have at&t go phone.

 

[xandros9]

maybe something needs to be done on AT&T's side, or maybe her SIM needs swapping with one provisioned for LTE? What happens if you swap SIMs? Either way, I think you'll want to get in touch with AT&T.

Its safe to assume both are the same AT&T GoPhone model I presume.