The best replacement for sidekick 3 is sidekick lx.

The best alternatives to sidekick 3 are rated as following:
★★★★★  sidekick lx
★★★★★  sidekick id
★★★  mda
★★★  blackberry pearl
★★  lx
★★  sidekick slide
★★  id
★  sidekick 2
★  sidekick 2008
  env
  helio ocean
  2
  lg env
  t-mobile mda

Your alternative for sidekick 3 is not listed? Suggest!
Speaking about sidekick 3, one probably shouldn't forget about cingular.

Other search terms related to sidekick 3 and their ratings are:
★★★★★ cingular
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sidekick 3
sidekick lx
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