Another great new feature in the Android 5.1 update for the Google Nexus 6 by Motorola is the introduction of a field test screen that allows you to view what band of LTE you are currently connected to.
Previously, the only way to get an idea about this was to install the LTE Discovery app, which was notoriously inaccurate – since the Nexus 6 made it technically impossible to get any information about which LTE band the phone was connected to, LTE Discovery had to essentially make an educated guess based on your location and other information broadcast by the cell tower.
That all changes now: After you’ve updated to Android 5.1, all you have to do is dial *#*#33284#*#* in the phone app. A debug menu will appear; simply select LTE engineering. That’s it!
This is handy for T-Mobile customers especially, who might be curious as to how T-Mobile is coming along with the Band 2 and Band 12 LTE roll outs in their local areas.