Since the customer will move from one operator to another, he has to collect new SIM from the operator he wants to go to. All you have to do is ... 1) The first customer has to go to the customer service center of the operator they want to migrate to. At this time you have to keep the SIM used in the previous operator. 2) At this time the desired operator will apply for a new operator by contacting the previous operator online. The whole process will be online based. 3) If the old operator gives clearance, the new porting of the number portability clearing house number. 4) In this process the customer does not need to keep his national identity card and new one. The process can be done with the help of fingerprints. However, customers have been advised by the operator to bring their national identity card or a copy thereof. 5) It may take up to 10 minutes to get a new SIM and complete the whole process. However, it may take a minimum of 1 hour to a maximum of 72 hours for the new SIM to be activated. 6) Postpaid subscribers will not be able to go pre-paid or pre-paid subscribers to the new operator. 8) And if there is any bill arrears in the old operator to the postpaid customer, the operator cannot be changed if it is not paid. 6) Mobile balance and internet data in the old operator will not be added to the new operator's SIM. So it is wise to go to the new operator only after finishing the balance and data of the old SIM. However, BTRC is making it a rule to keep the balance in the SIM of the old operator for two years. If the customer goes back to the previous operator within two years, he will get that balance. If not, the money will be deposited in the government treasury. 9) Operator cannot be changed a second time within 90 days of changing the operator once. Fee or Charge To change the operator the customer has to spend 156. This amount should be calculated as SIM change fee , tax and VAT.