How to Bluetooth tether Motorola Droid 3 (Android 2.3.4) to HTC One I have figured out how to enable the HTC to share it's internet via bluetooth:

Mobile Network Sharing -> Bluetooth Tethering [checked on]

But I am unable to find a way to allow the Droid 3 to consume the internet via bluetooth. I can get the Droid 3 to broadcast using 3rd part apps, btu can't figure out how to consume.

Note, this Droid 3 is my old phone that I am still using in my car as I can't mount my HTC One for non-technical reasons.

This looks like a duplicate of another reverse tethering issue which is a duplicate itself, but the answer listed can't be found.
WiFi tethering may be a better option. On your HTC One, go to:

Settings > More... > Tethering &amp; portable hotspot > Portable WiFi hotspot