To subscribe via SMS:
AIRTEL
1. SMS the keyword 'Sub' to 791.
2. SMS the Tonecode(00XX) to 791
e.g 596606 to 791. cost N100/month
MTN
SMS tone code to 4100
e.g 006777 to 4100. cost N50/month
GLO
SMS tone code to 7728
e.g 4056316 to 7728. cost N50/month
9Mobile
SMS tone code to 251
e.g 901546 to 251