I bought a used HTC One online and received, activated and tested it today. I haven't been able to pick up LTE no matter what I've tried so far.
I'm in Newport News, VA, 23602 (aka Norfolk / Hampton Roads Market) and spent the previous hour driving exclusively Sensorly-confirmed routes, stopping in dark purple areas, stopping in parking lots where my girl has told me about best LTE speeds on her S3, etc... Sensorly found 100's of 2G, 3G, and WiFi signals, and no 4G.
Tried Profile, PRL updates.. ensured my mode is set to CDMA/LTE.. toggled Airplane mode several times.. reviewed ##DATA# and ##DEBUG# screens for anything obviously unusual, and nothing has worked or helped me figure out what's wrong.
I'm visiting the Sprint Store when it opens today (Sunday), but I thought I'd see in the meantime.. does anyone have any additional suggestions?