Steps on how to subscribe Airtel 1GB data forN300 see below;

Simply dial *668# and have access to a menu where you can simply select internet data bundle for Facebook access. This means when subscribed for this plan using *668#, you gets unlimited access to Facebook, with fair policy usage. This tariff can be used with Opera-mini phone browser. But, doesn’t give you access to the phones default browser, web browser. The price comprises 100, 200 and 300 Naira, depending on the specific one you want. So when you dial *668#, just follow the menu prompt to choose the option you want.