Design

• The BlackBerry Curve offers a full keyboard while the Pearl has shared keys. The Pearl is also available in a flip model.
  
  

Features

• Both feature wireless internet, email, GPS, personal organizer and text, video and picture messaging.
  
  

Camera and Video Recording

• The Pearl series offers 1.3 to 2.0 megapixel camera quality, while the Curve series offers 2.0 to 3.2 megapixel camer quality. Both can record video.
  
  

Memory Storage

• The Pearl's internal memory is 64 MB while the Curve supports up to 256 MB. Both can accomodate MicroSD memory cards up to 8 GB.
  
  

Navigation

• Both models use a trackball for menu navigation. The Pearl series uses SureType for typing and texting.
  
  

Battery Life

• Talk time for the Pearl averages four hours, while talk time for the Curve can be closer to 5.5 hours.