I installed on speedsensor on the bike of my daughter. As she doesnt have a mobile phone i use a Android tablet to sync her rides. But with every connection to the sensor only one ride gets transferred and then the sync stucks (the led stops blinking red/green)
I can wait until a error comes ir deactivate/activate bluetooth to start the next sync.
The sync-circle gets full only after i synced 5(days)*2(rides) times...
To be shure its not a problem of this special tablet i used another tablet and got the same result. Thats annoing.