Facebook Messenger Gear S3. Android 12 ~ samsung one ui 4. I'm aware of the reduced capabilities and i don't mind too much.
I know this question was from weeks ago but as i also have a s3 with a mate 9, maybe i can help a little bit: I have the s3 bt only model. When i get in and out of the van i leave me phone in the van but i need facebook messenger on the galaxy gear 3 smartwatch cause i get jobs going to my facebook messenger but i need to open a customer and give them a update when i'm going to be there but i.