Indeed, all your contacts and applications were synced to T-Mobile's servers, so that if your handset was ever wiped clean, you could restore it just by entering in your log-in information. To add to that, the Sidekick was also the first-ever smartphone to incorporate cloud services.
You didn't know the Sidekick was so geeky, did you? I remember I downloaded a few games and even an SSH app so I could access my UNIX shell account at the time. I was also enamored by its app store, even though we didn't call it that back then. The Web browser allowed me to quickly search for information while I was out and about. It was the first phone I used that gave me constant unabated access to e-mail and instant messages.
