10.0% more mAH battery than Zen Ultrafone 503 3G. More battery capacity reduces the need to charge your battery again. (1650 mAH, Li-ion vs. 1500 mAH, Li-ion)
61.8% Higher pixel density than Zen Ultrafone 503 3G. High pixel density shows sharper text and extremely detailed photos and videos. (233 ppi vs. 144 ppi)
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