2. Lenovo Vibe S1

Well, Lenovo Vibe S1 is proud of being the world’s first smartphone having a dual front cam, including a main 8MP and a secondary 2MP snapper. More specifically, the former captures the image while the latter adds the depth-of-field effect to the image by blurring the background. Other Lenovo Vibe S1 specs boast a 5.0-inch Full HD screen, a MediaTek MT6752 octa-core 1.7GHz 64-bit processor, Android 5.0 Lollipop OS, 3GB RAM, 32GB ROM (expandable up to 128GB), a 13MP rear camera and a 2,500mAh batt.

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