Asus ZenFone 3 Ultra User Manual page 15

Charging other devices
Use your ASUS Phone to power-charge other mobile devices.
To charge other devices with ASUS Phone:
1. Connect one end of the USB cable to the device that you want to charge and the other end to
the OTG cable.
NOTE: The OTG cable is purchased separately.
2. Connect the other end of the OTG cable to your ASUS Phone.
OTG cable
IMPORTANT! Ensure that the OTG cable is connected to your ASUS Phone to ensure that your device
charges properly.
Charging modes
Choose either of the following modes:
OTG mode: Charges attached devices a up to 0.5A standard current.
Reverse charging mode (optional): When this mode is selected, your ASUS Phone turns off
to provide rapid reverse charging that can output a high speed, high charging current up to
1.5A - depending on the device being charged. In this mode, your ASUS Phone can still monitor
the charge levels. When battery power on your ASUS Phone is below 20%, your ASUS Phone
automatically turns on and changes to OTG charging mode.
NOTE: The reverse charging mode only supports devices with CDP (Charging Downstream Port) mode.
15
Chapter 1: Basics
USB cable