Workaround for Windows Phone 7 Phones Uploading Tens of Megabytes Per Day (FYI: Blame Yahoo! Mail)

Windows 7 and Windows Phone 7 expert Paul Thurrott collected reports in early January that supported his own observation of mysterious large amounts of data (30 to 50MB per day) being uploaded from Windows Phone devices over 3G even when connected to a WiFi network. A quick check of my own billing did not indicate my HTC HD7 Windows Phone exhibited this problem.

Windows Phone Mystery Data Upload Problem Only on AT&T?

Later (Jan. 20), Microsoft confirmed that a “third party solution” was the root of this mystery data upload.

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