Bluetooth and android

I have just received my R10, download the Garmin app and followed the instructions but cannot get them to pair.

The app just displays "Approach R10 Searching" but never finds the R10

The R10 has a solid Blue light so is in pairing mode.

I have shutoff the phone and restarted it, I have shut off the R10 and restarted while the app is searching still with no luck.

It also does not show under the phone bluetooth "pair a new device"

Has anyone found the trick?