"The Sidekick ID is not "Sidekick 4" or "Sidekick 4 ID" it is simply a remodel version of Sidekick 3! Kinda like we started with "Motorola Razr" then got "Moto Razr V3" or "Moto Krzr". There is NO camera/Bluetooth or MP3 Player! But honestly? I had the sidekick 3 and was not impressed! The Camera sucked, never used the MP3 Player and bluetooth could never stay connected! How ever, without these features, it gave T-mobile extra space to Up the Memory, Enhance the Signal and performance! Does anyone know if the sidekick ID comes with some kind of Calendar or date book? i cant remember if my sidekick 3 had anything like that"