Walmart-owned warehouse retailer Sam's Club has begun taking reservations for the iPhone 4S. Store reservations are technically beginning at 10AM in each timezone, but since not all Club outlets sell iPhones, buyers will need to check the company's website for local availability. Actual sales will begin on the 14th, as with other third-party vendors like Best Buy and RadioShack. Access is on a "first-come, first-served basis," the retailer warns.
