Register Gp Sim Is very Easy Just Follow Below Steps:
Go to your nearest GrameenPhone/Gp Center or Shope that selling Different types of Sim. And tell them you need to register your Gp Sim.
You need something for registration.
Now you can check your sim registration status Dial *16001# now replay with last 4 Digit NID/Driving Licence or Passport.
Or you can send SMS IN 16001 and type your last 4 Digits of NID/Driving Licence or Passport.
Now can easily know your sim Regiatraton status in replay SMS that you receive.