By Christina Farr and Alexei Oreskovic CUPERTINO Calif. (Reuters) – Apple Inc unveiled two new iPhones on Tuesday with sharper and larger displays, moving into a market segment dominated by arch-rival Samsung Electronics. Apple is expected to introduce its first new product since the iPad in 2010, a smartwatch, later on Tuesday. Bernstein Research analyst Toni Sacconaghi estimated on Tuesday that if Apple were to sell 30 million iWatches at $250 each, it would add about $7.5 billion to its revenue. Rival electronics giants such as Sony Corp, Samsung, LG Electronics Inc and Qualcomm Inc have already launched smartwatches, albeit without much success.