2. Oukitel K10000

Oukitel K10000, as the name suggests, is world’s first smartphone to feature an enormous 10,000 mAH battery on board. Not only will the phone lasts for days without charging, but it can also be a power bank for other devices on emergency situations. Together with a huge battery, other Oukitel K10000 specs make sure to prove the competence of this latest smartphone: a 5.5 inch IPS display, 2GB of RAM with 16GB internal storage and a decent 8MP rear camera. Design-wise, the phone has a firm body with all metal casing. The best part is that, this unique smartphone – power bank device cost as low as USD 240.

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