Microsoft updates Windows Phone 8 but won't say what it fixes

Microsoft updates Windows Phone 8 but won't say what it fixes: Microsoft today began delivering an update to Windows Phone 8 smartphones that provides unspecified "performance enhancements" that some customers say include an OS fix for random reboots and Wi-Fi enhancements. A spokeswoman said Tuesday that "Microsoft isn't going into detail into the specific enhancements at this time."