A:AnswerBest Buy currently only sells the US version of the S8/S8+ which are Single SIM Snapdragon versions mostly because dual SIM phones are not a huge selling factor in the US.
You can find them easily on other sites with multi-sellers.
A:AnswerPhones new? Not aware of Best Buy selling used equipment. So the short answer is; Yes!
Inserting card? Don't know.
Use old number? I always do when I upgrade. Even when changing manufacturers or carriers
A:AnswerSome Korean products are good and reliable but Chinese products basically are almost all made cheap and unreliable. Samsung is so far the best Korean products by my experience and research.
A:AnswerThe battery lasts longer than any phone I previously had. Obviously depends on how much you use it, what Apps you run, how bright you have the screen, so I can't give you an exact time. I have a clock always displaying on the screen, and I still get great battery life.
A:AnswerUnlocked phones don't have an original carrier, they're distributed through the manufacturer. You can use an activated SIM card (nano SIM) from any carrier (generally AT&T and T-Mobile are easiest, Verizon likes you to use their devices).
A:Answerthe galaxy s8+ model number is SM-G955U if that's what you're wondering. And, $200 giftcard can be used right after the purchase of an s8/s8+ unlocked.
