Originally Posted by gobik
Do I have to have a Blackberry Data Package to use wireless service?
You don't need the data plan to use voice (though some carriers are forcing data plans on smartphone customers).
Try these things.
What happens when the blackberry is plugged into a charger?
Remove the battery. Look at the contactcs on the battery and on the device. Are they more or less clean and shiny? If they are not, clean them with a pencil eraser.
Make sure the batter is tight in the compartment and the contacts are pressed against each other. If you have doubts, place a business card between the battery cover and the battery. If you don't have a business card, use something different.
Remove the SIM and microSD card (if you have one). Replace just the battery. If the blackberry starts and the device software runs ok, then replace just the SIM and test. Then try the microSD card again.
If none of this makes a difference, the try another battery.