Best Buy has started taking pre-orders for the iPhone 4S. The big-box retailer was apparently offering only 64GB black and white AT&T models for pre-order online—both of which have since sold out—but lists a number of models as available in-store. Models being offered for in-store pre-order include both black and white 16GB and 32GB Verizon and AT&T models, with 64GB Verizon models strangely absent. Nor is either 64GB Sprint model…
