But today, the story has changed. Making calls across networks is now relatively cheap, to make it even more cheaper; you can simply use this simple logic and make calls to any network in Nigeria for as low as 4kobo/sec or about N3/min.
How it Works And Requirements
In any case, this cheat works on any MTN line and at any time of the day, but for the best result; you should have these items ready:
1- Any MTN SIM (0803, 0806, 0813 etc) including lines that are ported to MTN.
2- Whichever MTN SIM you use, it has to be on ZONE, I mean MTN Zone plan.
3- And of course, you need a phone and an attentive ear!
How to Make Calls to Any Network at Just N3/min On MTN
Now that you have probably gotten all those mentioned ready, all you have to do now is to;
1- Load your MTN line with any amount of money. Just make sure that you have money that can be used to make calls.
2- Initiate calls by adding either of these suffixes (*1 or 555) at the end of any line you wish to call. E.g if you are to call a line say; 08027000123 you will just add either (*1 or 555) at the end so that it will look like this; 08027000123*1 or 08027000123555 and dial (send the call).
NOTE:
1- For the best result, you need to make sure that the MTN Zone call rate is 4kobo/sec or any low call rate at that time.
2- When calling MTN lines, you do not have to include the suffixes. Neither *1 nor 555 should be included.
LOGIC BEHIND the TRICK
This logic just helps you call any network at the same call rate as MTN Zone calls other network.
Source: MTN Cheap Calls Hacks