In as much as you can still get free 150MB from Gidimo app and extra 50MB data through Opera or Stark VPN Reloaded, I must say that the 4GB data for N500 should have been seen as the biggest of them all if not that it is an Instagram bundle that means that it can only be used for Instagram. The only offer that seems to have matched this one was the time 9mobile were offering 4.5GB data for N500 but it stopped working.
I will tell you one thing, the plan works for all MTN SIM cards whether new or old and here’s how to activate it.
How to get 4GB for N500 on MTN
First ensure that you have the required amount of airtime to complete the purchase then dial ∗131∗1∗1∗5# to subscribe.
When you subscribe, you will be given 2GB data to use for Instagram at first as the extra 2GB on the old MTN SIM card is not visible but once you reach the limits of 2GB before your they’ll start deducting from your normal 2GB.