Struggling to "transfer ownership" of the SIM card.
According to the regulations of many mobile network operators, to complete the procedure of transferring ownership, both the registered subscriber and the current user must be present at the transaction counter. This is almost an impossible requirement for many cases.
Finding the person whose name was on the phone number decades ago to ask them to go to a service center is impossible. This paradox leaves many users sadly facing the risk of having to abandon the phone number they have used for a long time for business and communication.

Many users need to use the online SIM transfer service because they cannot contact the previous owner (Screenshot).
Ms. Tran Thuy Linh (28 years old, online business owner) is one typical case. She said that she bought the SIM card a long time ago from a dealer, so when the regulation on standardizing information came into effect, she was completely stuck because the SIM card was not registered in her name.
"The network provider requires both the person whose name is on the SIM card and me to be present at the store to complete the procedure. This is impossible because I have absolutely no idea who the person whose name is on the SIM card is. I work in online sales, and this phone number is crucial for contacting partners and registering for banking services, but I'll probably have to discard it and buy a new SIM card," Ms. Linh shared.
Ms. Linh's case is not unique. Many other users are in a similar situation. When they go to social media groups to find solutions, they quickly receive numerous offers to help them easily transfer their subscriber information.
According to reporters, advertisements for illegal SIM card ownership transfer services are appearing frequently on social media, with promises such as "no need for the previous owner," "no need to go to a store," and "done in 15 minutes."
The price for this "backdoor" service ranges from approximately 300,000 VND for prepaid subscribers and 700,000 VND for postpaid subscribers. To create a credible facade, the perpetrators often use profile pictures wearing the network provider's uniform.
Users standardize their subscriptions at VNPT transaction points (Photo: Doan Thuy).
Potential for fraud
This is a dangerous vulnerability that not only threatens users' property rights but also poses a risk of fraud and misappropriation of assets in the digital space.
Cybersecurity expert Ngo Minh Hieu warns people to absolutely not provide personal information, photos of their citizen identification cards, portrait photos, or bank account information to strangers on social media.
According to experts, this action carries many risks of fraud and leakage of personal data.
In response to this situation, major network operators have issued warnings and affirmed the tightening of their operational procedures to prevent fraudulent activities at their source.
People can verify their subscriber information on the mobile application (Photo: Viettel ).
A representative from MobiFone affirmed that the current process for changing subscriber information is extremely tightly controlled and requires actual proof from the user.
"The process of changing the registered owner's name requires evidence and proof of use, and only the user themselves can provide sufficient information. In addition, MobiFone has issued a warning to its distribution channels regarding the strict prohibition of violating regulations on changing registered owners' names, which can lead to serious consequences such as fraud and misappropriation of assets," a MobiFone representative stated.
Online advertising services often exploit people's reluctance to visit physical stores. However, this practice seriously violates the regulations of the service providers and the law.
In the same vein, VNPT (VinaPhone) also clarified that all procedures for re-verifying subscriber information, as required by regulations, must be performed directly by the person using the SIM card, subject to strict technical barriers.
To ensure safety, people are strongly advised not to use unverified intermediary services online to change their subscriber information.
Besides verifying via mobile app, people can also go directly to the stores of mobile network operators (Photo: The Anh).
Information standardization must be carried out through official channels such as network provider applications (My Viettel, My VNPT, My MobiFone) or directly at authorized transaction points.
Mobile network operators such as Viettel, VNPT, and MobiFone have set up tens of thousands of support points nationwide, including on holidays, to ensure that all customers can safely and properly standardize their data.
Trusting these "illegal" services not only leads to people losing money unnecessarily but also risks the leakage of personal information, resulting in unpredictable legal consequences later on.
According to Dan Tri Newspaper
Source: https://baoangiang.com.vn/canh-giac-dich-vu-sang-ten-sim-tren-mang-a486662.html








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