With my work I cover one week in four standby(on call for breakdowns) Anyone else do this and ride, What ide like to know is whats the best/cheapest option so you can know if there calling you, Don't require the need to answer while riding I will stop and the call flight desk back, Whats others do?
I do one week in 4 on-call (airline structure repair/damage technical support). I just look at the phone when I stop riding as we have a window for responding.
Maybe look into a Smart watch that connects to your phone. I have seen some go for about £50. My sat nav lets me know.