T-Mobile offers a $1/day prepaid Sidekick plan that includes unlimited data service. Voice calls are 15¢/minute. Which is fine. I probably use less than 30 minutes of voice service a month. This is exactly the cellphone service that I want. Except I want an Android, not a Sidekick.

Does anyone have a prepaid Sidekick from T-Mobile? If so, do you have a friend with a 1900MHz GSM Android phone? Can you put your Sidekick's SIM in the Android and see if it works?