I just found this great article. My only gripe is their complete failure to mention that there WERE other carriers that offered the Danger HipTop! They were few and far between, and they were mostly small, regional carriers that most people weren't aware of. But only the SideKick® name was exclusive to T-Mobile. The device itself was not.

At any rate, beware the Nostalgia Feelz, and enjoy the article!

https://www.complex.com/pop-culture/...f-the-sidekick