I depend on the internet on my Android device to stay connected so I definitely understand the importance of having access to your data. I appreciate the steps you've taken in trying to resolve this on your on. It sounds like you have checked all the right settings, so far.
I recognize the value in your time. Can you please this last step:
Enable / Disable Data - DROID 3
From a home screen, select the App menu.
If the application icon is missing, select App menu filter (located at the top) then select All apps.
Select Battery & data manager.
Select Data delivery.
Select Data enabled to enable / disable.
Enabled when a green indicator is present.
I trust this information will prove successful in resolving your data connection. Let us know if you need anything further.
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