Research firm IDC has released its estimates on worldwide mobile phone sales for the second quarter of 2013, showing Apple's iPhone growth slowing as it posted its second-lowest iPhone growth rate in four years with only 20% year-over-year growth compared to 52.3% growth for the entire market. However, Apple maintained a hold on the number two spot for smartphone makers behind Samsung, as other competitors LG, Lenovo, and ZTE failed to hit the 6% mark during the quarter. Worldwide Smartphone Shipments in 2Q13 in Millions of Units (Source: IDC)Apple posted its second-lowest year-over-year iPhone growth rate in almost four years as some buyers presumably held off on iPhone purchases in advance of an expected next-ge
