Simple! Airtel uses Me2U which is a special service that allows an Airtel subscriber to transfer a portion of his airtime to another Airtel subscriber.
The maximum amount of airtime that is transferable per day is N5000.
The following simple steps are how to use Airtel Me2U service
i. Go to your SMS menu on your phone.
ii Create an SMS and write in this format: 2u [space] Airtel Number [space] Amount [space] PIN.
iii. Send the SMS to the number 432. Immediately you will get a notification together with the recipient.
Note: Subscribers of the Airtel network, don’t need to register for Airtel Me2U service. You just need to change the default “PIN” that came with the line to a secured “PIN”. Usually, the default “PIN” is 1234.