Elbeinlaw, I'm not sure it isn't the Samsung phone or the Android apps but My DuoTrap worked perfectly when connected to my Note 8 and Samsung Health app recording speed, cadence and auto pausing when I came to stoplights... for the first ride only. The next day... no dice. Samsung Health would go into auto pause the moment it sensed movement from the DuoTrap. Tried unpairing and repairing but nothing worked. Decided to remove it and now have it saved for when I add a dedicated cycling computer to the bike. Nothing but issues when using a phone.