How to know the number of the sim which is being used in the mobile

Hi guys it frustrates to you when you have too many SIMs of Airtel and use one with your family one for you friends and one even for business or anything like above. Since they are all alike and you can figure out which you actually are using then you are at the right blog post to know how check your number just by dialing some codes which I've given them right after the image below after some text I will bold it don't worry to make it more easy to get it, but one thing have you ever contacted with your personal business phone number with some of your friends, without knowing which number you were using and got busy while your business going on by talking with them without regretting during work and missed a nice deal call. Well then you can use this trick to get the inf of the number which you are using at the phone currently.

Well this only works for Airtel and this trick is tested by myself, works fine. If anyone who reads this post and knows anything about the alternative of this trick to other operators as well please post a comment so that every reader who reads this can also get the info about that.