How would I go about doing this?

Just got my iPhone 5 a few weeks ago over the phone. I'm with tmobile.

Anyway, I'm not pleased with it. Music quality sucks coming out of the speakers and I want a bigger screen so how would I go about trading my iPhone in to get the Galaxy 4?

"Do not give what is holy to dogs, or throw your pearls before swine, lest they trample them underfoot, and turn and tear you to pieces. "Do to others whatever you would have them do to you. This is the law and the prophets. "Enter through the narrow gate; for the gate is wide and the road broad that leads to destruction, and those who enter through it are many. How narrow the gate and constricted the road that leads to life. And those who find it are few.

Bad you'd lose alot of money i think the most you'd get to sell it for would be half of the original price
the speaker thing can be sorted easier and an iphone 5's screen is really big and having a bigger screen could be a little over the top
but then again there maybe some idiot out there that would pay a huge price for it if they don't understand their stuff
goodluck.