A:AnswerThat would depend if those features are working in your region.
In my region (non us) Samsung pay does not work, but Google pay does.
ECG as far as I know is region free, I can use in mine without an issue.
A:AnswerHey Lj57, thank you for finding the time out of your bustling day to ask us your question about the Samsung Galaxy Watch6. We recommend reaching out to Dexcom to inquire if their app would be compatible with the Galaxy Watch6. Feel free to contact Support if you have any other questions for us. Thank you for being a trustworthy Samsung customer. - Debra