A SIM swap is a frightening experience
This is a frightening scenario because you have lost the connection to your wireless provider, and you can’t do anything with the device in your hand. This is what you’ll experience if you are the victim of a SIM swap.
A thief has managed to obtain a SIM card connected with your phone number and put it in his handset. That allows him to open all of your apps, including your banking, stock trading, and other financial apps, and change the passwords so that only he can open them.
Many SIM swaps require the participation of a carrier insider
You might think that you are protected by two-factor authentication (2FA) but with a SIM swap, 2FA makes matters worse because the thief receives all of the codes sent to your phone number. As a result, 2FA actually makes it easier for a SIM swapper to steal a victim’s personal data.
Screenshot of text to T-Mobile rep from criminal seeking T-Mobile customer info for Sim swaps. | Image by Reddit
Kudos to the rep who rejected the multiple requests from this criminal. The bad guy wanted to provide the rep with the email addresses or phone numbers of T-Mobile customers in exchange for physical mailing addresses and other information of each account.
T-Mobile rep turns down text request for stolen customer information
The scary thing is that this is just one rep turning the bad guy down. All it takes is one ME to agree to turn over the requested information to ruin some T-Mobile customers’ lives. A handful willing to take $500 for each SIM swap completed could really damage the carrier’s reputation from the inside.
Later that same year, a T-Mobile customer said that one of the lines belonging to his account was twice the victim of a SIM swap. It is hard to imagine going through something like that once, can you even think about having to deal with that twice?
T-Mobile subscribers can protect themselves from internal and external SIM swaps
More importantly, a T-Mobile Mobile Expert informed the account owner that the SIM swaps his account was attacked with was the result of an “inside job.” It was a different T-Mobile “store rep” who was responsible. Even though the SIM swap attacks took place in 2024, it wasn’t until 2025 that the carrier sent a letter to the victim that confirmed that his SIM card was changed without his permission.
T-Mobile customers can prevent a SIM swap from occurring within the T-Mobile network by toggling on SIM Protection. To enable this feature, which prevents your phone number from being moved to a new SIM card or eSIM (again, inside the T-Mobile network), follow these directions:
- Open the T-Life app and go to the Manage tab.
- Tap on Security (found under the gear icon).
- Toggle SIM Protection to ON.
But what about protection from crooks moving your phone number to another carrier without your knowledge? That protection comes from a unique one-time Port-Out PIN that someone must have to move a phone number.
Even if a bad actor has your account number, he cannot move your device to another carrier without having the PIN number, which a subscriber can receive from the T-Life app. It expires after 7 days.
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