Gartner said worldwide smartphone sales in the second quarter of 2015 grew at the slowest rate since 2013. Worldwide sales of smartphones to end users totalled 330 million units, an increase of 13.5 per cent over the same period in 2014. Emerging Asia/Pacific (excluding China), Eastern Europe and Middle East and Africa were the fastest-growing regions, driven by good performance from Chinese and local vendors. Samsung's premium phones continued to be challenged by Apple's large-screen iPhones. Samsung lost 4.3 percentage points in market share year-on-year and declined 5.3 percent in unit sales in the second quarter of 2015. Huawei recorded the highest sales growth rate of 46.3 percent, thanks to strong overseas sales and 4G smartphone sales in China. iPhone sales increased 36 percent, which helped Apple gain 2.4 percentage points in marketshare. Release