To authenticate your new SIM or after upgrading your package, you will be ask you for IAM authentication code through mystc app or stc agent. Kindly, prepare the code through the IAM website here:
Then follow these steps:
1. Login using the same account in Absher
2. You will receive a confirmation code on your mobile number registered in Absher
3. Select SIM Registration
4. Choose stc
5. You will receive your personal service code
6. Share it with stc agent or use the code on mystc app.