Take this with a grain of salt: Japanese tech blog Juggly is reporting [JP] that Fujitsu is working on a cell phone with both the Symbian and Windows 7 OS (not Windows Phone) on board. According to the article, the handset will be released by Japan’s biggest mobile carrier NTT Docomo as part of its summer line up. Juggly even claims to know the name of the phone, LOOX F-07c, and also posts some sp