No! The 650 has a different connector configuration.

I wouldn't doubt that Seidio will be quick to market a compatible version.

I was thinking of upgrading to the 650 until I learned all of my current accessories (except headset) will be incompatible.
-Thanks PalmOne!

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Abandoned Sprint over failure to update PPC6600. Now with Cingular using the 8525 at HSDPA speeds!