Bernstein's Tony Sacconaghi becomes the latest analyst to air a cautious note about near-term iPhone (AAPL +1.9%) sales (I, II). Sacconaghi thinks Chinese sales may have fallen by 1.5M Q/Q in in the June quarter, thanks to an inventory build-up and a slowdown in sales at China Telecom (CHA - previous). However, he sees China's growing middle class increasing the iPhone's addressable market by 55M over the next 5 years, and notes the iPhone's customer loyalty remains unmatched.