The Samsung SGH-i620 marks a significant upgrade from its predecessor, the SGH-i600, showcasing notable improvements in both design and functionality. First and foremost, the SGH-i620 features a sleeker and more modern design, offering a smaller and more lightweight body that enhances portability. The display has also seen enhancements, with a larger 2.6-inch QVGA screen that provides a clearer and more vibrant viewing experience compared to the 2.3-inch display of the i600.In terms of performance, the SGH-i620 is powered by a more advanced processor, which elevates multitasking capabilities and overall responsiveness. This model runs on Windows Mobile 6, bringing a more refined user interface and additional features that support better productivity for users.The camera sees an upgrade as well, with a 2-megapixel sensor compared to the VGA quality of its predecessor. This improves image quality and allows for greater versatility in photography.Storage capacity has also been enhanced; the SGH-i620 supports microSD cards, allowing users to expand storage further beyond the fixed memory of the i600. This is particularly beneficial for those wanting to store multimedia files or applications.Connectivity options have expanded, with the i620 supporting HSDPA for faster mobile internet speeds, as opposed to the EDGE and GPRS options available on the i600. This is a significant improvement for users seeking a reliable and swift online experience.Battery life is another area where the SGH-i620 excels, boasting a longer-lasting battery that allows for extended usage without frequent recharging. Overall, the Samsung SGH-i620 advances its predecessor with a modernized design, superior display, enhanced camera capabilities, improved processing power, expanded storage, faster connectivity, and longer battery life, positioning it as a compelling choice for those seeking an efficient and powerful business smartphone.