Battery & Connectivity
The Asus Zenfone 3 Max is all about battery backup with its huge 4,100 mAh battery unit. The device is also capable of charging other smartphones with its battery, for which, it comes with USB OTG cable out-of-the-box. The Zenfone 3 Max ZC553KL uses GPS with A-GPS, GLONASS, and BDS for navigation. For internet connectivity, the device uses Wi-Fi b/g/n, and 4G LTE. As for other connectivity, the device comes with Bluetooth v4.1, Wi-Fi direct, 3.5mm audio jack, and a microUSB port.