Do you know you can use the 8-digit number at the back of mtn sim cards to configure them to make and receive absolutely free calls? I have been doing this for more than a year and i am willing to test it for you free of charge. Note that this is not mtn magic rubbish. Once the configuration is complet, if you are calling any mtn number, your credit will not be removed. And if anyone is calling you with mtn network, they will not remove the person's money. If you think this is a lie, call me now on 08031231233 and you will see that mtn will not remove your credit. (so, take note of your balance before you call me). I will teach you how to make money by configuring sim cards for people. My charge is N5,000. But if you only want me to configure your sim and not teach you how to configure for others, my charge is N2,500. But mind you, you only have today and tommorrow. If you know this secret, I guarrantee you will be making at least N2,000 daily without affecting your job, studies or business.