I'm selling my girlfriend's iPhone 5s on Ebay. She bought it online through her Verizon upgrade a few weeks ago and decided that she'd rather sell the 5s and keep her 4s. My question is, as it is still in the factory shrink wrap, would it be important to remove the SIM card? I would prefer not to do this as a sealed phone has more value than an opened box. I'm almost certain the phones aren't activated until someone calls or visits a store, and as of right now the phone has none of her information on it, but are there any ties to her Verizon account on the SIM card whatsoever? I'm trying to cover all my bases here. Thanks.