Cannot connect to 4G LTE. :( help me please

[Androidmomma]

Hello my friends. Yesterday I traveled from New Jersey (not a 4g area) to Sylvania Ohio (always screaming 4g). My tab won't connect and is stuck in 3g. My Resound same issue, but connected after battery /sim pull. Can't do that with the tab can I? Sim pull I mean? Help please. Coming here is like Chistmas since I don't have 4g at home. I will sit here mindlessly, trying to fix this for hours. Any suggestions would be greatly appreciated. Ty

 

[Androidmomma]

My rezound kicked right back to 3g. Waaaaaaa