Blackberry 7100g locked keyboard

By mistake I somehow locked my keyboard and can't make calls from my BB 7100g (Cingular) - I can receive SMS but I can't make a call - the numbers just don't appear on the screen - can anyone help me?

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Remove / Replace battery... if that doesnt work, run application loader from your blackberry desktop software (should also be an option there to backup your info if you want)

Hello - the information you gave me worked! Thank you so much for taking the time to respond - my BB now works fine. Thank you from Italy - Stefano

What are you going to use it for? Are you a business person who does a lot of traveling, and you need instant access to your email anywhere in the world?
This is the device for you. The Blackberry email server will transfer the email to your device as soon as it comes in to the server. It will also sync to your computer or laptop and you can use it as a modem to download your email.
That being said, if you want a nice internet enabled phone and pda, want to play games, maybe surf the internet, and be able to compose documents, and do things similar to what you do on your computer there are better devices for that out there.
But for the business person on the go, the Blackberrys are hard to beat.
As far as problems go, all devices have problems. But it's problems are usually pretty simple, and easy to fix.

if you know the error 400 appears on the screen bb7100g after Reset dition,
to do