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)
333.3% more mega pixels (MP) on front camera than Zen Ultrafone 503 3G. More front camera resolution means better selfies picture. Front facing cameras also used for video call on Skype (1.3 MP vs. 0.3 MP)
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