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What makes Zen Ultrafone 504 unique?

Here are 3 unique features & highlights of Zen Ultrafone 504 :
1 The best1 qHD phone with 5 MP camera
2 The #2 fastest qHD phone with Dual-Core processor
3 The #3 most popular2 qHD phone
1 based on 91score
2 based on no. of views on 91mobiles