i cant connect my watch

ry1989an Registered Users Posts: 2
Apprentice Traveler
edited January 24 in TomTom Sports
i have recently had an upgrade from a sony xperia z5 compact to a sony xperia xz1 compact, could any1 help with why my tomtom adventurer wont connect to the xz1 but will easily connect to the z5, ive tried all I know to do, ive even factory reset the watch but still not joy can someone please help.