Gp (Grameen phone) got its license on 28 November 1996. It got its license from the ministry of posts and telecommunications for cellular phone operations. It started its work on 26 march, 1997. If you are a user of GP sim and want to know your own number then we will provide you in this post. Hopefully, you will be benefited by this post. There are two codes. You can Know your number by using these codes. The codes are: 1. *2# 2. *111*8# Now you will see the process step by step.