If you are currently using MTN Cameroon internet . Then by default, you have this setting ip(18.104.22.168 port 8080 ) Enusre that you homepage is wap.mtnplay.cm
Now whats the trick?
You dont need to have airtime to enjoy this trick.
Dial *147*0# and confirm with 1 so as to cancel all internet subscriptions
Down load and install UC browser. I prefer the cracked version.
Just search UC browser cracked version on Google
launch your browser(uc browser) and minimise it.
dial this USSD *701*3#
Ignore any notification.
Dial *147*9# then *147*4# then you wait for 30 seconds
Dial *147*9# and wait for atleast 30seconds.
ENJOY FREE INTERNET