Glo is doing fatastic offer this time around, after they introduce glo borrow me data, now they still update their existing plan.

1.Double Free Tomorrow:
Gives back to the subscriber 200% of whatever is spent on calls, SMS or data today to use for free the next day. In the re-loaded offer, Globacom calculates all the value of airtime a subscriber used in a day for internet services, phone calls and SMS, and credits the subscriber’s phone with double this value at the start of the next day.
In other words, when you spend more today, you get much more tomorrow. For instance, if a subscriber on the Glo network uses N500 credit in a day on calls, SMS and data, Glo will give back N1,000 credit to the subscriber the very next day to call all networks, SMS and browse free,
To enjoy the service, subscribers are to dial*300#.

2. Gbam Plus 11k per second
It as a simple flat tariff plan which allows customers enjoy heavily reduced call rate on local and international calls.
Under the plan, calls are charged at 11k/s to all local networks and for international calls to 30 top destinations.

How Can I migrate to the Plan?
Dial*211#to migrate to the plan. Daily access fee of N5

3. New IDD Packs
The IDD pack covers calls made from Nigeria to 30 major international destinations for as low as N6.60 per minute.The IDD 100 gives the subscriber 12 minutes of call valid for 3 days, while IDD 200 gives 24 call minutes for 7 days. The IDD 500 bundle gives 60 minutes of call for 14 days, while the fourth bundle, IDD 1000, will avail the user 150 call minutes valid for 30 days.

http://www.naijaray.com/glo-reload-double-free-tomorrow-gbam-plus-idd-pack-plan/