Samsung's been marketing certified renewed phone on their website. Prices are pretty good, might be a little higher than what's sold on 3rd party sites but it comes with one year warranty and new battery. The issue is, there phones were returned to Samsung because there was a problem. I'm sure Samsung updates the devices with new IMEI but that doesn't necessarily wipe the data. The unit I bought which turned out to be broken was a demo unit. When I sent it in for repair at Samsung repair price, they sent it back saying demo units are not serviceable. You never know the life of the phone you bought it and what ever 'wipe' Samsung does of these phones, it not enough. It might work out for you but I will not buy a refurbished unit from Samsung again.
I have bought over 5 certified refurbished phones from Samsung directly and not had any issues. As a matter of fact my 2 S10e's are still in working order. (Granted they are not in active use ax my actual daily phones but still running perfectly.) I would not hesitate to buy their certified refurbished phones at all. Just my experience.
