I have a Nexus 5 and I am in an area with 1x 800 deployed. There is also LTE on band 25. I noticed something odd about how the phone connects to 1x and I am not sure if it is normal. When i force the phone to 3G only mode, it will connect to eHRPD and 1x800. If I have the phone in LTE mode and I make a phone call, however, the phone jumps on to 1x RTT. When on 1x 800 everything works fine, so it doesn't make sense that having LTE enabled causes it to use 1xRTT.