I was so fed up with Garmin that I started to fill out a Chat form on the Garmin Help web page, but decided to try one more time to get LiveTrack working
The following worked for me several times today:
Turn off iPhone and Garmin edge.
iPhone 7+ (iOS ver 12.3.1): turn on phone
Edge 1030 Bontrager model with Software Ver 7.5: turn on only after iPhone turned back on
iphone>settings>Bluetooth: On my phone, only Edge 1030 Bontrager will be Connected. The other Edge BT connection called BT_Edge 1030 Bontrager will be Not Connected
open Garmin Connect Mobile App(GCM)>My Day> Touch blue coloured data wheel (upper right corner), data wheel will start to spin then stop, then after a few seconds the white 'progress' wheel to left of the data wheel will complete about 1/4 circle clockwise down from the green dot and then stop, and after 5-10 seconds, the data wheel starts spinning again and the white progress wheel completes the clockwise circle back to the green dot
On same page go to More>Garmin Devices>press Sync Now, and data wheel spins and stops
Check Bluetooth settings to ensure both Edge settings are Connected. If BT_Edge 1030 Bontrager not Connected, press to Connect
Return to GCM, then press back arrow at top left to return to 'More' page
open Safety & Tracking>LiveTrack>turn off Auto Start>turn on Auto Start>turn off Strava Beacon which takes you to the Strava App Beacon page
turn off Beacon>turn on Beacon
turn off Beacon for Garmin (if on), if already off, go to next step
turn on Beacon for Garmin, and a Quick Tip window pops up. Select "I Already Have"
Return to Garmin Connect App (Connect app should still be open, so press Connect link upper left corner of screen)
Start navigation timer on Garmin
You should get notification on your Garmin that Garmin LiveTrack is active as well as get notifications on your phone that Live Track and Strava Beacon are working.
When you end navigation, you'll get notification on your Garmin that LiveTrack ended
This worked for me every time I tried it today. I did not go for a ride today, but I did walk around the block once with my phone and Garmin, and bothLiveTrack and Strava Beacon 'followed' me around the block.
Lett me know if this works for you
if you don't have Strava Beacon, sorry but I didn't test for that scenario.
IMPORTANT: Do these steps relatively quickly. I found that delays between steps somehow disconnected the Bluetooth connections,or some other aspect of the connection to LiveTrack became disconnected, but when I proceeded step,by step without delay it worked well.