Tried e-boarding pass on my Motorola Razr last week at IND. I use flyclear, and this complicated the procedure because the only scanner was at the main security line which meant I had to walk with the clear agent to the main security line and wait for them to try to scan my phone. When I got there they had to call someone else over over to scan the phone so I waited again. they said the scanner almost never works on phones (so why does NW show the razr as an available option?)
After it didn't work, I pulled out my backup paper ticket, which meant I had to go back through the clear area to get someone to mark the ticket. I will definitely not try it again until I know it is functional, and probably not with a razr.