Shentel must have pushed out an update last night in my area. I've had the HTC One M8 since Thursday and needed to keep it in CDMA only mode to make and receive calls due to, what I assume, was the lack of CSFB in my area. This morning, I put my phone back into LTE/CMDA mode and had LTE for my entire drive into work from Inwood, WV to Hagerstown, MD along Interstate 81. Before, my phone wouldn't connect to LTE in this area even when it was in LTE only mode.