If I press the power button on the phone while running HLT, will it run with screen off/in the background or will it stop? Reason I ask is that I put the phone in my center console out of sight because I'd prefer to not see it while driving, and it'd be handy to just turn off the screen so no button...

Thanks Harry. I definitely selected the external gps and saw it in the sensor list as "connected" but for whatever reason it didn't work that day. Perhaps user error. I tested it last night and what do you know, it showed up under the gps tab logging at 9-10hz.. :| . I tried a fresh reboot...

Thanks for the response Harry. I guess I'll search the forums. The GPS was registering 5-10hz with a different app, just only showed up as 1hz with HLT for some reason. Maybe there's a config setting. A way to move/separate laps/sessions throughout the day would be very helpful!

Ok, I was trying a different android lap timer and it wasn't working as cleanly as I liked so I tried HLT. I've seen several people use it w/ iphones. It's my own fault for not d/ling ahead of time and testing much (rather than at the track). Anyway, long story short I have an external Qstarz 818XT ...