The Samsung CorbyPRO B5310 is a significant upgrade over its predecessor, the original Corby model, focusing on enhancing user experience, functionality, and design.One of the most notable changes is the introduction of a slide-out QWERTY keyboard, allowing for more comfortable and efficient typing compared to the previous model's full touchscreen interface. This addition caters to users who prefer tactile feedback for messaging and social networking.The display on the CorbyPRO has also seen improvements, featuring a larger 2.8-inch screen with a higher resolution that delivers vibrant visuals and better readability in various lighting conditions. This enhancement makes it more suitable for multimedia consumption, including video playback and browsing social media.In terms of connectivity, the CorbyPRO boasts upgraded features with support for 3G networks, enabling faster data transfer and improved browsing experiences. This is a significant step up from the standard EDGE support found in the original Corby model, allowing users to stay connected with minimal lag.The camera has been upgraded to a 3.2 megapixel sensor, providing better image quality and more features like smile detection and video recording capabilities. This improvement is ideal for users who enjoy capturing moments on the go.Another change is the enhanced multimedia experience with built-in support for various music formats and a customizable music player, making it a more versatile device for music lovers. Additionally, the integration of social networking services directly into the interface allows for seamless updates and access to contacts.The design of the CorbyPRO reflects a more robust and modern aesthetic, with a sleek body available in multiple vibrant colors. The increased ergonomics and build quality provide better durability, catering to the active lifestyle of its users.Battery life has also been improved, with a more robust battery pack that ensures longer usage between charges, accommodating the needs of users on the go.Overall, the Samsung CorbyPRO B5310 presents a well-rounded upgrade from its predecessor, incorporating essential features that enhance both functionality and user engagement.