Joined: Jul 2007
Posts: 8,631
Likes: 3,543
From: South shore, L.I., NY
Bikes: Trek Emonda SL7, Cannondale Topstone, Miyata City Liner, Specialized Chisel, Specialized Epic Evo
Another thought is borrow an iPhone/iPad, Download the software and see what happens on that OS. If problem continues it’ll somewhat point to a Shimano device issue.