It was probably a deal breaker for a lot of the carriers Google talked to as well. T-mobile is on board for pushing the phone, but the others really prefer any

It was probably a deal breaker for a lot of the carriers Google talked to as well. T-mobile is on board for pushing the phone, but the others really prefer any new device to support LTE. It doesn't make sense for them to push devices that don't use the huge amounts of money they are putting into supporting and building out LTE.