According to Chinese site C Technology [Google Translate, via Unwired View], Apple has begun testing a next-generation iPhone prototype with a 4.9-inch display, along with an iPhone 5c successor sporting a larger screen. The claim is somewhat different from one made by Bloomberg earlier this month stating that Apple was developing two next-generation iPhones that would feature curved displays at 4.7 and 5.5 inches, although it is likely that the company is testing various screen sizes as it of