25.0% 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. (5 Inch vs. 4.0 Inch)
24.6% Higher pixel density than Zen Ultrafone 503 3G. High pixel density shows sharper text and extremely detailed photos and videos. (233 ppi vs. 187 ppi)
100.0% More RAM memory than Zen Ultrafone 503 3G. more RAM makes your mobile significantly faster and efficient. (512 MB vs. 256 MB)
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