An AT&T Moto X is actually one of the devices we use to develop LTE Discovery on. In all my testing, AT&T band detection is probably one of the most reliable so I'd hazard to guess you are probably always on Band 17 lol. If you find out for sure otherwise though feel free to send us a debug email in app and we can look into it. (Actually if you wouldn't mind, could you just go ahead an email me your logs and I'll look over them for inconsistencies?)
If you want an alternative check out SignalCheck by BlueLineComputing (MikeJeep). He makes another great signal utility you might enjoy. Just look for SignalCheckLite in the Google Play Store. If you like it I'd recommend supporting him as a dev and purchasing the pro version.
-Spence
LTE Discovery Developer
Spence!
I use LTE Discovery app and I have the Pro Edition. Very useful app. Thank you!
SUGGESTION: Have you ever considered creating a crowd sourced LTE bands coverage display map? For all carriers, but especially for AT&T. I've searched and cannot find one. IF there is one, please point me in that direction!
A lot of people use prepaid carriers and BYOD. They need to know specific bands being used in their area.
I use AT&T GoPhone, which only has native AT&T service, not roaming. I have the Moto XT1225, which is the "international" version of the Verizon Droid Turbo XT1254, and is basically the 5.2" version of the Moto Nexus 6. 5.2", 1440p, Snapdragon 805, 3GB RAM, 64GB storage, Qi wireless charging, Turbo charging. Rooted, TWRP recovery, 5.1.1 custom ROM. Actually, I own two and am running them both on AT&T network.
It has LTE bands
2, 3, 4, 5, 7, 17, so I am lucky it has all the AT&T bands (2, 4, 5, 17). In Georgia, I find 2, 4, 17. But in other places, like Vermont AT&T uses LTE band 5 mostly.
So, I'm OK.
BUT, what about people who want to know AT&T LTE coverage in their area, specifically the bands being used? All the maps I find only show generic "LTE" or "4G" coverage. How would that help someone in Vermont that does not have a phone with LTE band 5?
Current AT&T map or even Open Signal map would show "LTE" coverage, but when they BYOD their phone to AT&T prepaid service, suddenly they don't have LTE!
Because all the maps do NOT show necessary information! Even new phones do not always have all the AT&T and T-mobile LTE bands, if you wish to switch carriers.
I'll give you a specific example. A lot of people are buying phones like the Verizon Droid Turbo XT1254 (LTE bands 2, 4, 5, 13, 17) to use on AT&T and T-mobile.
Well, you see the problem. It does not have LTE band 5 (AT&T) or new LTE band 12 (T-mobile). In some parts of the country, that wouldn't matter. In other parts of the country, it matters very much.
A crowd-sourced LTE bands coverage map for carriers -- which your app could generate -- would be very useful!
This site seems to do some of that, but is not the easiest to use:
https://www.cellmapper.net/map
I think you could do much better!