Microsoft on Tuesday announced the Lumia 535 -- the first smartphone under its own brand since it completed its acquisition of Nokia in April. Microsoft is marketing the 535 as its "5x5x5" smartphone package. It has a 5-inch screen and 5-MP front- and rear-facing cameras. Microsoft will offer both single-SIM and double-SIM versions. Both will be 3G phones, preloaded with Windows Phone 8.1 and the Lumia Denim update.