I want a pocketable android device mostly for wifi use. It can be a phone, but I would only use it with a prepaid sim and no contract. It doesn't have to be a phone. I also want to be able to track the latest android software without interference from the provider (currently 2.2)? Does anything fit this bill other than the $529 Nexus one? It seems like a lot of money for a device that is about to go out of production.