i currently have an Iphone 3GS and i want to switch it into an Iphone 5
What is the way ?? How much should I pay ??
There's no exchange. You'll have to pay what everyone else pays.
Sell your old iPhone, then purchase a new one. Look on the Apple Store website to find out how much you will pay for the iPhone 5.
"What is the way ?? "
Buy an iphone 5.
"How much should I pay ??"
Whatever the store from which you purchase sells them for.
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