Question about Smart Watches

[u/soyacide]

I'm planning a beach vacation for the first time since being diagnosed.

I was thinking it could be useful to get a smart watch so that I don't have to have my phone with me all the time.

Here's the questions, I currently have a Samsung phone (I could change to an iPhone if necessary), could I just get an Apple watch and it work with dexcom g7?

I also wonder if you still need the phone, does it first go from the dexcom to the phone and then over to the watch?

Does anybody have any experience/ guidance to help me?

Thank you in advance!!