UPDATE: The promo has stopped
You can now get 25MB and extra 10MB from Airtel Nigeria, to browse free legally on your phone and computer.
Just text "Weeklytrial" to 141, using your Airtel SIM card and you will get 25MB instantly for free.
What of the extra 10MB?
After receiving your 25MB, text, "Dailytrial" to 141 and you will instantly, get your extra free 10MB.
How Do I Check my Airtel bundle Balance?
Just dial *141*712*0#
After dialing the code above, you should see 35MB as your balance.
NOTE: You can only get another 25MB after exhausting the current 25MB you have. So, take it easy and don't think you can get 25million MB by texting "weeklytrial" 1 million times...lol
Mind you, this will not last forever, but enjoy as it lasts.
Check out the tutorial on Airtel Internet and WAP settings if you do not know how to configure your phone and PC with Airtel Internet settings.