First activate bluetooth on the phone, close everithing, activate bluetooth on the meter, once activated open the app, if it doesnt show press refresh. I uave build 9 on android and works fine.
JS
That does not work for me. When I first tried the bluetooth function that drove me nuts.
The App seems to have a problem either with my Nokia 8 or Android 8.1.
What I did:
Activate bluetooth at the phone and let it seach for a new device.
Activate bluetooth at the 121GW, the meter is detected by the phone and will connected to the meter.
Until this point everything is ok, the phone is connected to the meter.
Start the Android app and nothing happens...mostly only an empty screen, that`s all, the app does not see the meter. Sometimes it worked for some reason, mostly it does not.
I found this solution:
Connect the meter to the phone as described.
Open the app.
In case that nothing happens: Switch off the bluetooth function at the meter and switch it on again immediately.
Than the app shows the meter ID.
Confirm the meter ID and the app connects and works without any problem from now on.