My Dezl 770 has a difficult time downloading any IOS services onto itself. The Bluetooth connection for the phone works flawlessly but not for any IOS Services.
It is hit and miss. Sometimes it works, and other times it does not.
I must point out that the Smart Link app itself downloads feeds onto the app without problems, but for some reason this data is not received by my GPS most of the time.
It seems like that there is a Bluetooth data connection problem.
Cobra660 about Garmin Smartphone Link, v2.3.2