Tethering the Raspberry pi to an android phone.

Tethering allows you to share the internet connection on your phone whether it be a WIFI connection or 4G connection.

On a Raspberry PI tethering does not happen instantly. Firstly we need to add it to the interfaces file.

Open the interfaces file:

sudo vi /etc/network/interfaces

Now we need to add the interface usb0 by adding the following line to the end of the interfaces file:

iface usb0 inet dhcp

Now we can bring the interface up by running the command:

sudo ifup usb0

You should now have a internet connection on your Raspberry Pi through your mobile phone.