On the phone, we have Motorola Moto G4 and a G4play. Buy them direct from Motorola and you get an unlocked quad band phone that the single handset can work with all carriers. CDMA, GSM it does them all. Clean version of Android no crapware, and mine was automatically upgraded to 7.0.
We currently are using them on total wireless which uses Verizon towers, but we have a G4play which isn't currently in use that could be activated with att or t mobile if needed. Just change the Sim card.
I got my newest on a sale couple months ago $129 for a g4, 32 gigs of storage,4 gigs ram, 5.5" gorilla glass screen. Not sure what specials they have now. And yes, these phones work as a hotspot.