hi, i have a nokia 3120c that wont stay on, when i turn it on it says start up phone without sim card, when i click accept it shows the joining hands then after a second it starts flashing from the blue back ground to white then goes off after 30 seconds. does anyone know what could be wrong with it please? i have tryied a new battery but it was still the same. it wont even stay on long enough so i can reset it.

thanks in advance for anyones help!!