Glo Closed User Group is an added feature tht permits you to call any other GSM number that is on (CUG) FOR FREE 24 hours a day, for friends- 7days a week, family and co-workers that have also joined the CUG plans from anywhere in the country and people in other countries around the world provided you ROAM the line.
You can also get to people that are not in the CUG group or plan by loading recharge card and still comes with the cheapest call rate u can ever imagine. This means that the plan combines the cheap call rates of a contract line with the unlimited FREE calls of the CUG to help you crash your call costs dramatically.