If our smartphone suddenly displays “No Service,” we assume the mobile network has gone out and blame the SIM provider. Once the network returns, we forget about it. This happens often. In today’s digital age, smartphones have become an essential part of our lives. Bank accounts, social media, and UPI accounts are linked to our mobile numbers.
In such a situation, if the phone suddenly loses network or displays “No Service,” it shouldn’t be ignored as a simple network glitch. The DoT recently issued a warning regarding this. The department has stated that this could be a SIM swap fraud. The department has also provided information on what people should do next.
The DoT, a government department under the Ministry of Communications of the Government of India, tweeted from its official account, “If you think a No Service error is just a network glitch, think again.” The department says that a sudden loss of network access could be the first sign of SIM swap fraud. Therefore, instead of ignoring it, call your telecom operator immediately.
For your information, SIM swapping means activating a new SIM card in place of your existing SIM card.
In this fraud, hackers first attempt to steal your personal information, such as your name, date of birth, and registered mobile number linked to Aadhaar or PAN, through phishing or social engineering.
They then go to the telecom company’s store, posing as you or creating fake documents, and obtain a duplicate SIM card, claiming the SIM is lost or damaged.
As soon as the telecom company activates the new SIM, your phone’s network is completely disconnected, and your number starts working on the criminals’ new SIM.
After this, all your OTPs, bank alerts, and password reset messages are sent to them, allowing them to easily empty your bank account.
In its tweet, DoT stated that if you suddenly receive a “No Service” message on your phone, you should first call your telecom company. If a duplicate SIM request has been filed in your name, block that number immediately.
Also, be careful not to share your personal information on any social media or with any unknown email.
Also, don’t rely solely on SMS-based OTPs for your bank accounts and essential apps; use authenticator apps or email alerts for two-factor authentication (2FA).