If whatever unlocked phone you buy supports eSIMS, you can set up/activate new service with a US carrier from the DR. I switched from VZW to Mint while in Sosua, no issues with activation (Mint is great btw, and cheap).
If your Galaxy supports dual eSIMs, you can run them both in parallel. I have Mint/Altice running on my iPhone, works great.
If your Galaxy supports dual eSIMs, you can run them both in parallel. I have Mint/Altice running on my iPhone, works great.