SoftBank on Thursday said its fall quarter profit was cut in half from a year ago owed to demand for, and competition over, the iPhone 4S. It made the equivalent of $430.8 million in profit versus $858.8 million in late 2010. The company had spent nearly $393.4 million in promos to prevent customers from jumping to KDDI now that it was an iPhone provider, a feat which president Masayoshi Son said turned out wasn't necessary.