It’s been almost two months since the mysterious data hog appeared on Windows Phone 7 devices. It was revealed to be Yahoo! Mail and shortly after Yahoo! blamed Microsoft for the fault. Today it looks like Yahoo! have finally rectified the issue (yes, Yahoo!, not Microsoft).
Logs scanned by Within Windows now show that version of IMAP software version has changed from 0.7.65_12.286037 to 0.7.65_14.298026 and appears to have resolved the huge data overhead.
Link – Within Windows
Credit – John Colclough