A:AnswerYou are paying for the phone but split up over a year, two years or three. Your choice. Once you've paid for half the amount of the phone you can upgrade and will have to turn the old phone back in.
A:AnswerYes. Just upgraded from S5 to S8 and no change to phone number or calling plan rates (assuming you're upgrade eligible i.e. not still paying for your current phone).
A:AnswerYes, buying through Best Buy keeps all warranties. I bought through Best Buy, had a problem a couple days after purchase, went to an AT&T store to get help. They tried to fix it and told me to go back to where I bought it to swap it out. I went back to Best Buy, spent some time with the sales rep trouble shooting, and he swapped it out. The phone busted right after purchase and was obviously a manufacturer issue with that phone. To be honest, I am not sure how it was covered. Obviously Samsung will cover the cost of the problem since it was a manufacturer problem, but whether Samsung will be compensating AT&T or Best Buy, I don't know. But the main point is I did not lose any basic warranty stuff by purchasing at Best Buy. You'll just end up going to Best Buy for any significant servicing instead of the AT&T store. For regular diagnostics and troubleshooting, you can still go to AT&T and they can still help you, but if there is going to be a swap out or a refund, you'll have to go to Best Buy.
A:AnswerGenerally, no. AT&T's specials can change and you should check with them, but the Buy One, Get One (BOGO) on AT&T almost always require one of the two lines to be a new line and is subject to monthly installment plans. The reason is to keep you attached to their network; otherwise, people would use the BOGO and resell the phones or go to a prepaid plan.
A:AnswerUnfortunately, the Dex is a separate purchase. Only promotion I was aware of from different entities were the following: VR goggles by Samsung with $50 of occulous content or an additional s8 or s8+ from select carriers.
