333.3% more mega pixels (MP) on main camera than Bird F520. More main camera resolution means better picture quality and detailed photos, which will look sharp on a large screen. (1.3 MP vs. 0.3 MP)
5.0 mm Thinner than Bird F520. Slim mobile phone is easy to handle and looks gorgeous in hand. (105 x 46 x 11 mm vs. 109.8 x 48 x 16 mm)
46.7% bigger screen size than Bird F520. The bigger the screen size is better the user experience of reading and watching movie or video songs. (2.2 Inch vs. 1.5 Inch)
50.4% Higher pixel density than Bird F520. High pixel density shows sharper text and extremely detailed photos and videos. (182 ppi vs. 121 ppi)
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