How to check biometric verification, sim registration check, status and code

how I can check my all  sim is verified or registered, not verified status code 

Check Your all sim verification  biometric  status on dial  ing code. cheek Bangladesh all sim biometric registratio system code.

1) Check gp - grameenphone sim biometric verification - registration status writ sms Reg send sms 4949 number free

 2)  banglalink   sim biometric- regstration status code please dial *1600*1#  free

2) Robi sim biometric verified  or registration know  status code dial *1600*1#  free

3) Airtel  sim registration  or verified  or non verified or non registration  status code dial *121*444#  free


4) Teletalk sim registration  or verified biometric or non registered  status check write sms  Q send sms 1600.  free

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