Microsoft says it has found the cause of the data loss issue plaguing Windows Phone 7 handsets, and claims that the blame lies not with the OS itself, but with an unnamed third party.
Complaints have been growing in recent weeks that WP7 devices have been eating through their mobile data allowance far quicker than they should – even in cases where their owners have barely been using data.
Reports highlighted cases where unknown batches of data were being sent out in chunks as large as 50MB at a time, often pushing subscribers over their monthly data cap.
After investigating the issue, Microsoft now says the problem is being caused by a third-party application, though it isn't saying which one – and doesn't appear to have a solution just yet either.
“We have determined that a third-party solution commonly accessed from Windows Phones is configured in a manner that potentially causes larger than expected data downloads,” the company told Seattle P-I in a statement yesterday.
“We are in contact with the third party to assist them in making the necessary fixes, and are also pursuing potential workarounds to address the configuration issue in case those are needed. At this point in our investigation, we believe this is responsible for most of the reported incidents.
“We are investigating additional potential root causes for the remainder of the reports.”
The statement added that the percentage of Windows Phone 7 users affected by the issue numbered in the “low single-digits”.