Rumor has it that glo is giving out as huge as 1gb of data for a very low price of 100 naira.
To get the data plan sms 1 to 8070 and wait for response.
To check your balance dial #122*22# and plan is valid for 15 days.
Declaimer: this post is based on a rumor I can not guarantee if it's 100% working. (I send 1 to 8070 but message failed) try at your own risk.