Remember when PhoneDog reviewed the Samsung Vibrant?  The Samsung Galaxy S 4G is an evolutionary upgrade to the Vibrant with a larger 1,650 mAh battery, a new battery door, Android 2.2 (Froyo), support for T-Mobile's HSPA+ 21 Mbps network, and a front-facing camera. The form factor is exactly the same as the Vibrant, and save for an updated version of Android, the software interface is almost identical as well. It offers a 1 GHz Hummingbird processor, 4-inch Super AMOLED display and a 5-megapixel camera. Part 1 of 2.