I made a more detailed post about this in the sponsor’s section, but I can’t re-post here since I’m citing info found on the interactive maps.
I have a hunch that this is a software issue since my phone seems to have trouble finding LTE signals from towers which are known to be transmitting LTE. When I use the *#*#4636#*#* menu and choose “LTE only,” I am able to lock on to a tower about 1.5 miles away when I’m near a window at work. Then, as I move deeper into the building, the signal goes down to -131dBm RSRP before cutting out entirely. There is a closer tower that’s supposedly transmitting LTE is about 0.75 miles from me, but my phone can’t seem to detect the signal.
I think that the phone is sensitive enough to detect the signal and maybe even strong enough to hold it, as evidenced by the phone detecting and holding LTE after cycling through airplane mode. However, whatever is telling the phone to jump to LTE is majorly flawed.
There are a few threads on this subject over at XDA that I'm also involved in-http://forum.xda-dev...d.php?t=1898433http://forum.xda-dev...d.php?t=1901905http://forum.xda-dev...d.php?t=1905007