Disclaimer - I am not responsible for anything you do. This is for informational uses only. I am not responsible for what you decide to do with your phone.With that out of the way let's talk about what we have here. Currently, the Nexus 6P does not have band 12 activated. Well, that's what we were told. The initial OTA received disabled the band but Google did not remove the factory image for whatever reason. With that being said, here is a quick write up of the steps you need to take and the prerequisites to doing this.The prerequisites are1. Unlocked bootloader2. Fastboot enabledThe steps are simple1. Download this radio https://www.androidfilehost.com/?fid=24052804347853575 2. Reboot your 6P into bootloader mode.3. Open up command prompt or terminal.4. Use cd to go to the directory where the radio downloaded5. Type is "fastboot flash radio radio-angler-angler-01.29.img"6. Type "fastboot reboot"7. Profit.This will allow you to access band 12 lte. This also will give you VoLTE over band 12. This is good news as it gives you calls over lte for 911 calls. That being said there is a reason Google disabled this so keep that in mind.This information is based off of a thread I was following that I am unable to find. This is not my discovery. This a centralized location for information.