Excited customers lined up at the AT&T store in Bakersfield 9 p.m. Thursday night aiming to be the first to walk out with the new iPhone 4S. AT&T Sales Director Mark Spangenberg and his staff served customers homemade brownies, cupcakes and coffee and raffled off accessories as the hours ticked down to the 8 a.m. opening. When the store doors swung open, customers were greeted with high fives and cheers as everyone rushed to fulfill another iPhone dream. AT&T has invested more than $450 million in the past three years in its greater LA network infrastructure.