

2. Guide to registering your MobiFone SIM as the primary user
If your MobiFone phone SIM card hasn't been registered as the primary user, you can refer to the following registration methods:
2.1. Registering MobiFone SIM as the primary user at stores
Registration location: You need to visit the nearest MobiFone transaction stores to complete the registration.
Documents required:
Original Citizen ID/ID card.
SIM card to be registered.
Prepare 5 frequently contacted numbers within the last 30 days (either calls or messages).
Processing time for primary SIM card: Immediate on the same day, typically takes around 20 - 30 minutes for customers to receive their primary SIM card for use.
Registration fee: Free of charge.
2.2. Step-by-step Guide to Registering MobiFone SIM as the Primary User Online
Method 1: Update on MobiFone.vn Website
Step 1: Visit the website https://dktt.mobifone.vn > Register Information
Step 2: Log in by entering your phone number and password > Click Log In.

Step 3: Update the required information on MobiFone's requested forms > After filling in all necessary information, press the Commitment button, sign as required > press UPDATE to complete.

Step 4: Wait for confirmation SMS from the network provider. After customers complete updating information, they will be notified on the screen with the message: “Your information has been received and processed. MobiFone will notify when the update is completed. Thank you!”
Method 2: Update on My MobiFone Application

Step 1: Download and log in to the My MobiFone app using your current phone number or create an account right at the login interface
Step 2: Navigate to Others > select Customer Information > Then choose Subscriber Information
Step 3: If you already have information, there will be a section for you to update, otherwise, the app will display it blank and at this point, you need to update by selecting Register Information > capture all the information as required by the app > click Continue
Step 4: Wait for MobiFone's response. The network will verify the information, update your profile, and will inform the subscriber as soon as possible.
Note: For subscribers who do not receive online registration instructions via SMS from the network's switchboard, registration will not be possible; you need to go to the store to proceed.
Above is the guide on how to register MobiFone's official SIM that you can refer to and apply immediately. If you find it helpful, share it with your relatives and friends. Thank you for following our article here at Mytour.