A:AnswerYou can get the iPhone from Best Buy, pay in full upfront or monthly payment plan. We like it because you can pay for the phone in full at time of purchase. You’ll love the 13 Pro Max
A:AnswerI upgraded my iPhone from the 6S Plus 32gb to the 13 Pro Max 256gb. This was a HUGE upgrade and I'm so happy with it. (Having 8 times the amount of storage I had before is awesome!) I purchased my new phone on 12/19/21 at the El Cajon store and signed up with T-Mobile's Magenta Plan (I originally had Cricket which was good, but since I'm upgrading my phone I wanted to upgrade the service too). Jared at Best Buy told me that normally for my phone (since it's older) T-Mobile would only give me $50 to trade it in, but because it was the holidays T-Mobile gave me $200 instead! I don't know it they're still giving $200 for the 6S Plus, but it doesn't hurt to ask. Good luck!
A:AnswerYes, if you buy it through Best Buy outright (meaning you pay the price In full) it will be unlocked and should be useable anywhere in the world that offers service
A:AnswerNot through Best Buy you have to buy it specific to a carrier through them. You would have to purchase through apple directly if you want an unlocked variant
A:AnswerI would take it to Best Buy and get your trade there to save sending it in to your carrier and waiting for credit much faster and take your phone home today