OTG ( OTG) The full meaning of the word OTG is " On The Go" . Combining one of the two OTG supported devices with the other allows you to do many different things. We connect various flash drives [Hard Disk, Pen Drive, Card Reader, Modem, etc.] to the PC, such as PC ( Personal Computer ) using USB as the host . In the same way , you can connect to different flash drives on Android phones through OTG . Currently the number of OTG Supported Android devices is increasing. As a result , a lot of work is going to be done without PC (Personal Computer) . For example , with OTG support, you can easily print your camera images to a printer without a PC . In addition , Pen-Drive, Hard-Disk, Keyboard, Mouse and other USB Sticks can now be easily attached to the smartphone. Since this OTG has many advantages , you can be sure that the device is OTG Supported by looking at the specifications of the device when buying the phone .