Troll Bate
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They won't change any data plans until you activate the phone. What you can do, is take the phone into your rep, or in my case AT&T store, and activate it there, making sure that nothing changes.
Lolz, that guy couldn't wait another week so he goes the S4 and then proceeds to buy a Samsung TV and implied he also buys a Samsung Tablet of some type. what a poor attempt to troll.