Feb 2, 2011 12:01 GMT  ·  By

Windows Phone 7, the new mobile operating system that Redmond-based software giant Microsoft brought to the market back in October, comes with a series of issues that resulted in increased data consumption for some of those who already adopted the platform.

Microsoft stepped up a few weeks ago to say that a third-party application was causing the probem, and confirmed a few days ago that the said application was none other that Yahoo! Mail, which, apparently, sent a few times more data than it was supposed to.

Following that unveiling, Yahoo! came up with an answer to the issue, and apologized to those who were hit by this problem, confirming that there is an “inefficiency” in the synchronization of e-mail between the handset and the server.

“Tens of millions of people check their Yahoo Mail from their mobile device each day, and we know they want their mobile mail experience to be fast, rich, and real-time,” Yahoo said in a statement.

“While our default settings on all mobile platforms realize this approach, we have determined that an inefficiency exists in the synchronization of e-mail between Windows Phone Mail clients and Yahoo Mail, which can result in larger than expected data usage for some users.”

At the same time, the company confirmed that the issue will be fixed in a matter of weeks. Microsoft is working on resolving the problem, and should deliver a solution shortly, as soon as the first software update for Windows Phone 7 arrives.

One thing that should be noted here is that the said problems reportedly affect only Windows Phone 7 devices. Yahoo! Mail is available on smartphones running under other mobile OSes as well, but they did not experience similar problems.

It should be noted that Yahoo! was keen on mentioning this, and that the company also unveiled that the main problem was actually the manner in which Microsoft chose to implement IMAP for Yahoo! Mail.

“The issue on the Windows Phones is specific to how Microsoft chose to implement IMAP for Yahoo! Mail and does not impact Yahoo! Mail on these other mobile devices,” the company said.

“Yahoo! has offered to provide Microsoft a near-term solution for the implementation they chose, and is encouraging Microsoft to change to a standard way of integrating with Yahoo! Mail, which would result in a permanent fix.”

Hopefully, Microsoft would manage to deliver the Windows Phone 7 update in the near future, so that it would fix any issues users might have with their devices. In the meantime, there is a workaround that the company detailed.