Ok it's a simple fix ,it you are using a phone like me , my phone costs 40 bucks , it dies everything I want it to , if you are using yours mounted for live speed just download a speedometer app ,there are hundreds of free and paid gos based speed sensor apps . Other wise you can get a cheap computer , or a nice speed cadence sensor and have real time speed data . I have a lezyne micro color now I got used for pennies ,it super small give me real time speed from a sensor or gps speed ...