My spouse and I share a Consumer Cellular phone and data plan. I have an unlocked Samsung S5 mini, she has a 3rd Gen Moto G LTE that we bought from Consumer Cellular and is locked to their network. When we're traveling, I generally get much better phone reception (4 bars vs none) than she does. I've tried fiddling with the APN settings and have not been able to improve her reception. I've noticed that the APN on the MotoG is locked to "wholesale" and the Samsung is set at "att.mvno" is this the reason for the difference?