BLACKBERRY CURVE 8520 UNLOCKED -

I HAVE A BLACKBERRY CURVE 8520 UNLOCKED FOR SALE. I PURCHASED THIS PHONE A YEAR AGO FOR 120. I HAVENT USED THE PHONE SINCE I GOT MY UPGRADE 6MONTHS SO UNFORTUNATELTY THIS PHONE HAS BEEN UNUSED FOR 6 MONTHS. RECENTLY I TRIED TO TURN IT ON BUT THE SCREEN STAYED BLANK. THIS PHONE MAY NEED A NEW BATTERY OR THERE MAY BE A PROBLEM WITH THE SCREEN. I AM SELLING THIS PHONE WITH A PHONE COVER, USB, CHARGER.