T-Mobile Sidekick users rejoice, your contacts are coming back … finally.

In what has to be the biggest disaster to date for mobile data loss, T-Mobile and Microsoft have finally figured out a way to get your contacts back on to your Sidekick.  Microsoft made the following announcement earlier this morning:

The Danger / Microsoft team continues to work around the clock and has completed its latest round of rigorous tests. We are now ready to make the first phase of the content restoration process available to you, starting with personal contacts.

This data restoration effort is only necessary for the minority of customers who lost data from their Sidekick devices.

Beginning today, log into the My T-Mobile website, where there will be a recovery tool to restore contacts you may have lost during the recent service outage. This tool will enable you to view the contacts you had on your device as of October 1. With a few clicks and a confirmation, you will be able to restore these contacts to your Sidekick. If you have recreated some of the same contacts on your Sidekick since October 1, you can choose to keep both sets of contacts, merge them, or just keep the set of contacts now on your device. You may also edit any partial or complete duplicates on your Sidekick after restoration.

We continue to work 24 hours a day, 7 days a week to restore your data. We’re making solid progress on the next phase in this restoration process, including your photographs, notes, to-do lists, marketplace data and high scores.

We appreciate your ongoing patience.

You can find step-by-step directions in the T-Mobile forums.

While it is nice to see progress being made, it would be even nicer to finally get some sort of official word as to how T-Mobile plans to make this up to their users who have suffered through weeks of this mess now.