Well. I'm completely baffled by the phone on my Pro1 not working. My Pro1x works fine, so I don't think it;s a LOS problem. Since I almost never use my Pro 1 as a phone (so I don't actually know when this problem occured), I'm not highly motivated to trouble shoot it. Lol. If anything occurs to me I'll let you know. I will have to get around to trying out a new SIM card. Both my Pro1 and Pro1x are on T-Mobile, although the SIM in the pro1x is Ting.
Bands for US T-mobile are 4 (1700/2100 MHz), 5 (850 MHz), 66 (extension of Band 4), 12 (750 MHz) and 71 (600 MHz). I don't think the Pro1 handles either 71 or 66, but I might have that wrong.
Neither the Pro 1 nor the Pro1x show the battery drain problem
I have a sim in. Have something I'm in the middle of, but will get the bands for you later this morning. It is T-Mobile US. But here is the curious thing... I don't use my Pro1 or Pro1x for calls, but they have sims and have always been capable if I needed to. I've suddenly discovered my Pro1 can't make calls, (my Pro1x does just fine still). I will investigate this further later.
This is a ping-post, as i updated the above post multiple times, and the conclussion this far is The 22.2 bug seems to be related to the presence of a SIM card!!