Some Garmin products are Bluetooth compatible. Some need to have data link to update via smart phone.
We use computer link to update.
From Gamin website
Voice Commands, Bluetooth and Smartphone Link
Speak commands and your device responds. RV 760LMT has voice-activated navigation in addition to its touchscreen interface, so you can keep your hands on the wheel.
Sync a compatible Bluetooth-enabled device, such as your smartphone, to RV 760LMT for hands-free calling through its integrated microphone and speaker. Safely stow your phone in a glove compartment, pocket or purse and still make and take calls.
Smartphone Link is a free mobile app that connects your RV 760LMT with your iPhone® or Android™ smartphone. When paired, your RV 760LMT can use your phone’s existing data plan to share information — such as where you parked, POIs and your destination. Smartphone Link also gives you access to Garmin Live Services4, useful real-time information such as weather and traffic conditions. Garmin Live Services are available free and by subscription.