Roaming Data Top-Up Scams via SMS
How scammers send fake carrier SMS alerts about roaming data exhaustion to collect payment for top-ups that are never applied to the real account.
Part of: Roaming and Data Top-Up Scam
Last reviewed: 8 June 2026
Travellers abroad are particularly vulnerable to roaming top-up scams because they are dependent on their mobile connection, anxious about unexpected charges, and less likely to independently verify an SMS that appears to come from their carrier. A message arrives warning that roaming data is nearly exhausted and offering a quick top-up through a link or a reply.
The urgency of losing connectivity abroad makes recipients act quickly. The payment link collects card details for a top-up that is never applied — in some variants, the card details are harvested for later fraud rather than any charge being taken immediately.
How this scam works on SMS
An SMS arrives with the sender name displaying the recipient's carrier brand, warning that roaming allowance is at 10% or has been exhausted. A link leads to a payment page requesting card details for a top-up bundle. The page looks like the carrier's genuine top-up portal but is a phishing replica. Payment is taken, no data is added, and the card details are saved for additional unauthorised charges.
Some variants direct the victim to call a premium-rate number, where time-based charges accumulate while the victim navigates an automated menu. The call connects to no real service.
Common red flags
- SMS about roaming data arrives when you did not expect to be near your limit
- Payment link in the SMS leads to a domain that differs from your carrier's official website
- Top-up offer in the SMS is not available or recognised on your carrier's official app
- Sender name displays as your carrier but the number it originates from is unusual
- Link asks for card details and does not redirect to your carrier's verified checkout
How to protect yourself
- Never click top-up links in SMS messages — use your carrier's official app or website
- Verify your actual roaming data balance through the official carrier app before taking any action
- Save your carrier's official top-up web address and app before travelling
- Enable two-factor authentication on your carrier account to prevent unauthorised changes
- Contact your carrier by calling the official number on their website if you believe your data is genuinely exhausted
How to report it
- Forward the SMS to your carrier's spam-report number (7726 in the UK and US)
- Report to Action Fraud (UK) or the FTC (US) at reportfraud.ftc.gov
- If card details were entered, contact your bank immediately
Frequently asked questions
How can I top up roaming data safely while abroad?
Open your carrier's official app (downloaded before travel) or navigate to the carrier's official website directly. Never follow links from SMS messages. Your carrier can also be reached by calling from a local number using the international support number printed on their website.