19. Asus Zenfone Max

Asus Zenfone Max is meant to go with you on long trip without worrying about power. Asus Zenfone Max battery sports a huge 5,000 mAH capacity and also the biggest battery smartphone ever produced by Asus. With that much capacity, you can expect a talk time of up to 37.6 hours, Wi-Fi web browsing for 32.5 hours, and a stand-by time of 38 days. Besides, ASUS ZenFone Max specs feature a 5.5-inch HD screen, a Qualcomm Snapdragon 410 processor, 2GB RAM, 8/16GB of ROM (expandable up to 128GB) and a combo of 5MP front plus 13MP rear camera.

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