1. 3 essential points to note when registering your Mobifone SIM card as the rightful owner
You might be delighted with your purchase of a Mobifone premium number, but don't overlook the importance of registering your SIM card. Before you proceed, here are some key points to keep in mind:
- If you choose to register at Mobifone outlets, the subscriber must be present in person.
- For subscribers wishing to register their Mobifone SIM cards or Mobifone 3G/4G SIM cards online, it's essential to meet the criteria of having received an invitation message from the network provider. Without this message, online registration cannot be completed.
- Ensure that the provided information is accurate. It's advisable to review documents to obtain precise figures instead of relying solely on memory as mistakes may occur. To be more certain, carefully read the regulations and information in the network provider's declaration sheet. In cases where the subscriber wishes to transfer the SIM to the person seeking to buy a SIM suitable for business age to impress customers, when registering information both the new and old subscribers must come directly to Mobifone stores to complete the procedures.

2. Registering Mobifone SIMs as the rightful owner
To facilitate registering as the rightful owner of the SIM, Mobifone provides 2 registration methods: method 1 is to go to a Mobifone SIM registration point and follow the instructions of the staff; method 2 is to register online using the syntax provided by the network. Before doing this registration, you can check beforehand whether your SIM has been registered as the rightful owner by composing the message: TTTB send 1414.
2.1. Registering Mobifone SIMs as the rightful owner at stores according to decree 49

To register Mobifone SIMs as the rightful owner at the store, prepare the following documents:
- Original valid identity card.
- Latest portrait photo
- Mobifone SIM requiring registration of rightful owner information
- Then, go to the nearest Mobifone stores and follow the registration process:
- Provide documents to the staff and fill in the information on the declaration form as instructed
- Some subscribers may need to provide additional details such as the nearest top-up card denomination, 5 nearest contact numbers, remaining account balance, etc.
- Upon receiving all the subscriber's information, the staff will proceed to register the Mobifone SIM as the rightful owner for you. In cases where customers do not have a portrait photo, the network will assist you.
- Registration fee is completely Free. Registration time can range from 20-30 minutes depending on the number of customers at the counter.
Even before the crack of dawn, you can now officially register your own SIM card. Henceforth, sole possession and control over your SIM card is granted, with no room for dispute or grievances.
2.2. Registering Your Mobifone SIM Card at Home
While the registration process for Mobifone SIM cards at stores is swift, for those with busy schedules or distant from Mobifone outlets, online registration is a convenient alternative. No need to search for physical locations anymore, just a few clicks and your SIM card becomes officially yours.
To register online, ensure you have received the registration invitation message from the network provider, and that your SIM card is not yet registered. There are two online registration methods available:
- Method 1: Register via My Mobifone App
Log in to My Mobifone → Navigate to Personal → Update Information → Enter the required details → Agree to Terms → Confirm by signature on the app screen → Click Update to complete the online registration process.

This is the step-by-step process for registering as the rightful owner online with the need to update information. For subscribers not requiring updates, the network will send notifications through the screen, and you won't need to proceed with registering your Mobifone SIM as the rightful owner anymore.
- Method 2: Registering via Mobifone.vn website or the link sent by the hotline system in SMS
By registering through the website link, you'll follow these 2 steps:

That's it! You've completed registering your Mobifone SIM as the rightful owner. This isn't just complying with the Government's Decree but also ensuring rights for the SIM owner.