Hi - this could well be a GrapheneOS thing as Bangle.js should 'just work'.
One thing you could try is on the Bangle, enable Passkey in Settings -> Bluetooth.
It might be GrapheneOS adds a restriction that it won't bond to a device unless that device has a passkey, as maybe it thinks it can't be trusted if it doesn't.
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Hi - this could well be a GrapheneOS thing as Bangle.js should 'just work'.
One thing you could try is on the Bangle, enable
Passkey
inSettings -> Bluetooth
.It might be GrapheneOS adds a restriction that it won't bond to a device unless that device has a passkey, as maybe it thinks it can't be trusted if it doesn't.