146.2% more mega pixels (MP) on main camera than Zen Ultrafone 503 3G. More main camera resolution means better picture quality and detailed photos, which will look sharp on a large screen. (3.2 MP vs. 1.3 MP)
33.3% bigger screen size than Zen Ultrafone 503 3G. The bigger the screen size is better the user experience of reading and watching movie or video songs. (4.0 Inch vs. 3 Inch)
75.2% Higher pixel density than Zen Ultrafone 503 3G. High pixel density shows sharper text and extremely detailed photos and videos. (233 ppi vs. 133 ppi)
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