3. Asus Zenfone 3 Ultra: 4,500 mAh

Coming up next on the list of battery smartphones is Asus Zenfone 3 Ultra with 4600 mAh. The Asus smartphone comes with a massive 6.8-inch full HD display, specially just for the Ultra version. The touchscreen is protected by Corning Gorilla Glass 4. Asus Zenfone 3 Ultra specs inside the large metal body are: Qualcomm Snapdragon 652 chipset, Quad-core 1.8 GHz and quad-core 1.4 GHz processor. Asus offers 2 variant choice for users: 3 or 4 GB of RAM along with 3 options of internal storage: 32/64/128 GB of ROM , all expandable up to 256GB. The smartphone also sports 23MP rear camera and 8MP front-facing shooter. Asus Zenfone 3 Ultra price is Rs. 32990 ($ 490).

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