just updated to oreo and compared my benchmarks before and after update. Sad to say performance took a hit after the update. battery drain has to be tested...
@Prats89 bought in India via Amazon. warranty is not void. just flashing with old software from US with Samsung pay and update normally via ota to tizen 3 .
S3 watch supports Samsung pay. But the problem Samsung pay app is not available to download from anywhere. you have to downgrade with old us rom and update to latest. there is an xda forum to help you with it. I too didn't have the app but followed...