How to Prevent SIM Swapping: Tips to Protect Phone and Accounts

In our increasingly connected world, your mobile number is more than just a way to make calls or send text messages—it's a digital key that can unlock access to your most sensitive personal information. From financial accounts to social media profiles, a growing number of online accounts are linked to your mobile device for two factor authentication and password recovery. Unfortunately, this has made your SIM card a valuable target for cybercriminals through a method known as SIM swapping.

What Is SIM swapping?

SIM swapping, also called SIM swap fraud, is a form of identity theft where fraudsters trick your mobile service provider or wireless provider into transferring your mobile number to a new SIM card—usually one under their control. Once they gain control of your number, they can intercept authentication codes, reset account passwords, and ultimately gain access to your bank accounts, financial information, and social media accounts.

Our 10 most valuable tips:

At Belfabriek, we understand how crucial secure communication is for businesses and entrepreneurs. Your business phone number isn’t just a contact detail—it’s the backbone of client communication and operational continuity. If your number is hijacked through SIM swap fraud, it could severely damage client trust and lead to lost opportunities.

That’s why we’ve compiled our 10 most valuable tips to help you protect your mobile identity and keep control of your communications:

1. Use a strong password and PIN for your mobile account

One of the first lines of defense is securing your mobile account with a strong PIN code or account password that isn’t easy to guess. Many wireless carriers like Verizon allow you to set up an account manager PIN through their app—such as the Verizon app—to add another layer of authentication before any SIM-related changes can be made.

If you're using a virtual number or business phone service via Belfabriek, make sure access to your account dashboard is equally protected with multi-factor authentication and a strong, unique password.

2. Enable two factor authentication (2FA) – but not via SMS

Two factor authentication (2FA) is crucial, but SMS-based 2FA can be a weak point if your SIM is compromised. Instead, use authentication apps like Google Authenticator or Authy. These apps generate time-based verification codes that don’t depend on your SIM card or phone number and are much harder for attackers to intercept.

For users of virtual phone services like those from Belfabriek, consider enabling app-based authentication wherever possible to secure your online accounts and associated phone numbers.

3. Be wary of phishing attempts

Many SIM swap scams start with phishing emails, phone calls, or text messages designed to trick you into revealing personal information like your account passwords, security questions, or even answers to account recovery questions.

Legitimate companies, including telecom platforms such as Belfabriek, will never ask for sensitive information via email or SMS. Always verify the authenticity of any communication before responding.

4. Lock down your social media accounts

Cybercriminals often scour social media for clues—like your pet’s name, your first school, or your mother's maiden name—to answer security questions. Adjust the privacy settings on your social media profiles to limit public access to personal information that can be used in SIM swap fraud.

For entrepreneurs and freelancers using Belfabriek numbers on platforms like LinkedIn, be mindful not to share too much personal data publicly that could assist in social engineering attacks.

5. Monitor for suspicious activity

Keep an eye on your bank accounts, credit reports, and text messages for any signs of suspicious transactions or login attempts. Unexplained charges, verification codes you didn’t request, or a sudden loss of the ability to receive calls or texts could be a sign that someone has taken control of your phone.

As a Belfabriek client you can always count on friendly support when it comes to security concerns or other questions.

6. Use a password manager and complex passwords

Using a password manager allows you to generate and store complex passwords for each of your linked accounts, making it far more difficult for attackers to guess or crack them. Never reuse passwords across personal accounts, and update them regularly, especially if you suspect any kind of breach.

7. Ask your carrier about extra security measures

Some mobile carriers offer additional security features, such as “number lock” or the option to disable SIM changes entirely without in-person verification. Ask your wireless provider how to manage extra security on your account.

While Belfabriek itself does not rely on SIM cards, users can protect their numbers and account owner access through advanced settings (call filter), IP restrictions, and login alerts.

8. Watch for warning signs of a SIM swap

Act quickly if you notice any of the following:

• You suddenly lose access to your mobile device (no signal).

• You can’t log into online accounts that rely on authentication codes.

• You stop receiving calls or text messages unexpectedly.

• You receive notifications about new device logins or password resets.

In the unlikely event you suspect fraudulent access to your Belfabriek account or number settings, contact support immediately to freeze the number or reroute call flows.

9. Freeze your credit and monitor the dark web

Consider freezing your credit to make it harder for scammers to open financial accounts in your name. You can also use identity theft protection services to monitor the dark web for your personal information—like your social security number—and get alerted if it's being traded or exposed.

10. Stay educated and proactive

SIM swapping is a growing threat, but the more you understand about it, the better you can protect yourself. Regularly review your security settings, update your devices, and remain vigilant about suspicious activity.

At Belfabriek, we emphasize the importance of layered security, especially for professionals managing multiple accounts through a single mobile number.

Conclusion

In the digital age, your phone isn't just a communication tool—it's the gateway to your entire online identity. By understanding how to prevent SIM swapping, you take a crucial step toward securing your financial accounts, social media, and personal information.

Whether you're managing your private life or running a business with a professional Belfabriek number, staying on top of your digital security is essential. Implement strong security measures, use authentication apps, and remain alert to prevent fraudsters from taking control of your phone—and your identity.