I got a Zumo XT and got it a phone too.
Put XT on like ealdous34 because of App shortcomings and just so much better.You should now have multiple selections so if you have done both a Garmin and a phone you can check both boxes.
I guess most guys who put an XT on the bike did it last year (I almost did). If you have experience of the XT and App (particularly with a dedicated phone) would you have made the same decision or run with the App?
Even Harley does theirs by USB and you do it yourself.