Danger’s Sidekick phone is famous on T-mobile for being one of the earliest consumer-friendly synchronized devices.
What makes them so great? Every bit of data that is on a Sidekick exists on their server, which is fantastic if you ever lose/break one… all you need to do is power on your replacement, and like magic all your information is there again as if it never left- call logs, pictures, you name it.

The problem is, apparently the folks that administrate the service need to learn some IT basics.

Rule #1: ALWAYS BACK UP THE DATA!
I would think that by now anyone who administrates a network would understand the importance of frequent and redundant backups. When dealing with all of your customers’ personal information, I would expect there to be some off-site storage as well.
Turns out there isn’t.
Apparently, Danger was in the process of migrating to a new server when something went horribly, horribly wrong, causing them to lose what appears to be all their subscriber’s information.

This is bad for Danger and parent company Microsoft… they are trying desperately to correct the situation, however it appears there is no backup to be found (not even an old one) to revert to!
T-mobile subscribers for now are warned not to turn off their device until the new server is up. Otherwise, when you power the device back on, it will find a blank server to pull from and all your data will be gone for good…
Danger/Microsoft, how did you let this happen?!

Source: Engadget