I've had a galaxy watch for about 4 years now (the original one - SM-R800) and have only recently started using Samsung Pay on it recently. I am finding it very temperamental when trying to pay for items using Samsung Pay , e.g. when using the tube. I usually get errors along the lines of "card scanned twice" when I have only touched the contactless scanner once or sometimes just some other error I don't understand. I find that if I hold the watch at 90 degrees to the contactless scanner it is more reliable than touching face down. I am not sure if I am doing anything wrong here. My watch is usually in flight mode (with NFC on) and I've found NFC to be less problematic when flight mode is off but that doesn't always help (I know you have a limited nr of times you can use in flight mode before having to pair with phone again so that is not the issue). Do other people have these kind of issues with the old Galaxy Watch or even with the newer ones. Is my watch faulty? I don't really want to have to get a new one!