ATT removes the no-4G option on phones that normally have it, too.
I know right. :banghead:
Edit for Treb -
Check out "Network"
https://play.google.com/store/apps/details?id=de.mangelow.network
Change only the preferred network mode there.
May or may not have more options than you can see.
May or may not survive settings after reboot.
May or may not work.
Safe to try if you note the original setting and don't play with anything else.
Exit out using your home key, NOT the back key.