The second round of the smartphone competition has begun. Samsung Electronics released its new model Galaxy S Tuesday in the domestic market. Samsung Electronics President Shin Jong-gyun (left in the left picture) and Google Vice President Andy Rubin unveil the Galaxy S at Samsung Electronics` headquarters in Seouls Seocho district. Prior to this, Apple, which has triggered a smartphone boom, unveiled its new smartphone iPhone 4 Monday. Apple CEO Steve Jobs (right picture) showcases the new iPhone at the annual WWDC event in San Francisco.