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Yes, fake cell towers are being used to deliver scam texts. Portable devices known as SMS blasters or false base stations can transmit messages to nearby phones without the operators first obtaining every recipient’s phone number. The technology changes how the text is delivered—not the underlying scam, which still usually depends on a victim clicking a link, entering credentials, or making a payment.
The clearest documented case came from Bangkok in November 2024. Thai police said a device in a vehicle impersonated the AIS network and sent nearly one million messages over three days. The available evidence shows a real international tactic, but it does not establish that SMS-blaster vehicles are routinely targeting American cities.
What happened in Bangkok?
Thai police said suspects drove through a crowded Bangkok area while operating an unauthorized false base station. The equipment reportedly impersonated AIS and sent messages claiming that recipients’ 9,268 loyalty points were about to expire, urging them to redeem a gift.
According to the police account, investigators found the device in a vehicle alongside an 8,000-watt portable power station, four mobile phones, and a Wi-Fi router. Police said nearly one million messages were sent between November 11 and November 13, 2024. The suspects faced allegations involving unauthorized radio equipment, an unauthorized radio station, and unauthorized spectrum use. Thai police described the case here.
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Some reports have described the device as capable of sending approximately 100,000 messages per hour. That figure should not be treated as a universal performance specification or as proof that the device sustained that rate throughout the Bangkok operation. It is separate from the police’s reported total of nearly one million messages over three days.
What is an SMS blaster?
An SMS blaster is a portable radio system designed to imitate a legitimate cellular base station. It can be carried in a vehicle or backpack and positioned near a dense crowd, such as people in a shopping district, transit hub, or event venue.
In simplified terms, the attack works like this:
- The device presents a cellular signal that nearby phones may recognize as attractive or stronger than the legitimate network.
- It can induce or force some compatible phones to connect to it.
- The equipment may encourage a downgrade from modern cellular protocols to insecure 2G.
- It transmits SMS messages directly to phones in radio range.
- The operator moves on, leaving victims with what may look like an ordinary text.
Reporting from Wired describes systems that use a 4G false base station to capture nearby phones and a 2G station to send the messages. The process can happen quickly, although the exact behavior depends on the phone, its settings, local network configuration, and whether legacy connectivity is available.
Why criminals use fake cell towers
Conventional mass-text campaigns generally require a database of phone numbers and send messages through a carrier or messaging provider. An SMS blaster instead targets phones based on physical proximity.
That gives criminals several advantages:
- They may not need a preexisting list of recipients’ numbers.
- They can target crowded areas with a single moving device.
- They can make a sender name or identity appear familiar.
- The message may bypass some carrier-level spam and URL filtering because it does not travel through the normal carrier SMS infrastructure.
- The equipment can be operated from a vehicle or carried by a relatively mobile criminal team.
The GSMA says SMS blasters can bypass legitimate mobile networks and their anti-spam controls. That does not mean carriers are powerless. They can support detection, intelligence sharing, investigations, and takedowns of related websites or accounts. The narrower point is that ordinary carrier filtering may not intercept a message transmitted locally by a rogue base station.
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The delivery method is new to many victims; the scam is familiar
SMS blasters are a delivery system. The payload is usually ordinary smishing—phishing sent by text message.
Common lures include:
- Fake delivery or parcel notices
- Bank-security alerts
- Account suspension warnings
- Toll, parking, or government-payment demands
- Expiring loyalty points
- Prize and gift claims
- Requests to verify personal, password, or payment information
A message can appear alongside genuine conversations and still be fraudulent. A familiar sender label is not proof of authenticity; sender identities can be spoofed or made to look familiar.
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Can you tell whether a fake tower sent the text?
Usually, no. The message may look like a normal SMS, with no visible warning that the phone briefly connected to a rogue base station. There may be no unusual phone number, obvious formatting error, or other reliable clue.
That is why the safest response is to evaluate the request rather than trying to identify the radio technology behind it. Do not click an unexpected link. Open the organization’s official app, type its known website address yourself, or call a verified number from a card, statement, or official website.
The Metropolitan Police gives similar anti-smishing guidance, including using an official banking app instead of following a link in a suspicious message.
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Does a 5G phone protect you?
Not automatically. A phone that supports 4G or 5G may still be exposed if it permits a downgrade to 2G and a nearby rogue station can exploit that behavior. Exposure varies by handset, operating-system version, carrier, network configuration, location, and user settings.
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That also does not mean every modern phone is vulnerable or that every phone is being secretly hacked. The documented use is primarily mass delivery of malicious SMS messages. The fraud generally still requires the recipient to click, disclose information, install something, or pay.
How to reduce your exposure
1. Disable 2G if your phone supports it
On supported Android devices, look in mobile-network or SIM settings for a control labeled something like:
- Allow 2G
- 2G network
- 2G connectivity
- Disable 2G
The exact path and label vary by manufacturer, model, Android version, carrier, and country. Do not assume that one menu path applies to every Android phone. Wired reports that disabling 2G prevents the phone from scanning for or connecting to 2G towers, subject to emergency-call exceptions where newer networks are unavailable.
Disabling 2G reduces one attack path, but it does not stop ordinary smishing, malicious websites, SIM-swap fraud, or account takeovers. Some older phones, roaming arrangements, rural networks, or emergency fallback scenarios may depend on legacy connectivity.
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2. Keep built-in protections enabled
Use your phone’s spam-protection and unknown-sender features. Android Messages and iPhone messaging apps provide filtering or reporting tools, though these are more useful against conventional spam than against every locally transmitted SMS-blaster message.
Android’s Advanced Protection can provide stronger defenses on supported devices. Apple’s Lockdown Mode is intended for people facing highly targeted attacks and can restrict normal features. It is not a simple anti-text-scam switch and may interfere with websites, attachments, messaging, accessories, or device-management tools.
3. Treat unexpected links as unsafe
Do not click merely because a text:
- Uses a familiar company name
- Mentions a plausible order or balance
- Threatens immediate account closure
- Claims that points or benefits are expiring
- Appears in an otherwise legitimate message thread
Instead, launch the official app manually, enter the known web address yourself, or contact the organization through an independently verified channel. Delete and report the message through your phone’s messaging app.
4. Install updates and secure important accounts
Keep the phone’s operating system and security updates current. Use unique passwords, enable multifactor authentication, and avoid reusing passwords across banking, email, shopping, and social accounts.
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- Close the suspicious page and do not enter additional information.
- If you entered a password, change it through the official website or app—not through the text’s link.
- Change that password anywhere else it was reused.
- Enable multifactor authentication.
- If you submitted card or bank details, contact the institution using a verified number.
- Review transactions, account-login alerts, and recovery settings.
- Install pending system updates and run the phone’s available security checks.
- Save screenshots, the sender information, URL, and timestamp, then report the message to the relevant carrier, platform, organization, or authorities.
Where has this tactic appeared?
The strongest documented evidence reviewed here concerns Thailand and other Asia-Pacific markets. The GSMA has listed reports involving Cambodia, Indonesia, Japan, Malaysia, New Zealand, the Philippines, South Korea, Taiwan, Thailand, and Vietnam. Additional reporting has described activity in parts of Europe and South America.
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This is incident reporting, not a complete global census. It supports describing SMS blasters as a real and expanding international tactic, but not claiming that every country—or every phone user—is currently being targeted.
What does this mean for people in the United States?
The available evidence does not establish that SMS-blaster vehicles are routinely targeting American cities or that the United States is experiencing a nationwide wave of these attacks. The technique could be attractive in any dense urban market, but its documented prevalence, local legality, network conditions, and device impact can differ by country.
For U.S. users, the practical advice is the same whether a text came through a normal carrier route or a fake tower: do not trust an unsolicited link, verify requests independently, use multifactor authentication, and report suspicious messages.
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Fake cell towers are real, and criminals have used them to deliver large volumes of scam texts to nearby phones. But the equipment is not magic and the victim is not automatically hacked. The decisive step usually remains the same: clicking the link, surrendering information, installing software, or sending money. Disable 2G where your device supports it, keep your phone updated, and treat unexpected texts as untrusted—even when the sender appears official.
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