The earbuds worked well for a week but now I can only get sound out of one ear at a time. It appears they are operating as independent bluetooth receivers and not as a headset.
If I use them normally (take them out of the case at the same time), both make power-up chimes and give the “battery high” message but only the left ear makes a pairing chime and “P2-L” bluetooth device appears and then sound only comes out of the left-ear bud.
The right earbud will eventually power-down. If I switch it on again, the “P2” bluetooth device appears but if I connect to it, the sound moves from the left-ear to the right.
I get this behaviour on two different devices (iPhone 7 and a PC). No pattern of forgetting devices or power-up / power-down sequences can get them to work together anymore.
I have tried an 8-sec hold-down for a factory reset but I don’t see any evidence that they have reset and I don’t see any behaviour change.
Any ideas or do I have to return them?