Phone scams have grown more sophisticated as callers move beyond anonymous voice calls to messaging apps where they can present a name and a profile photo. A scammer on WhatsApp or Telegram who displays a friendly face and a plausible name is far more convincing than an unknown number, and victims who trust the photo are more likely to share information or send money. Reverse face search gives you a way to investigate the person behind that photo, checking whether the face traces to a real, consistent identity or is stolen from someone else. This tutorial walks through how to investigate a suspicious phone call or message sender safely. For more on protecting yourself from fraud, see our guide on how face search can help prevent financial fraud.
Step 1: Do not share personal information or send money
Your safety comes first. If a call or message feels suspicious, do not share personal information, financial details, account credentials, or one-time verification codes — no legitimate organization will ask for these over an unsolicited call or message. Never send money, gift cards, or cryptocurrency to someone who contacted you unexpectedly. If you feel pressured, end the conversation. You can investigate the sender's identity safely afterward without any further engagement.
Step 2: Gather the sender's profile photo and details
If the caller reached you through a messaging app like WhatsApp, Telegram, or Messenger, save their profile photo to your device. Also note the phone number, the display name, and any details they shared about who they claim to be — a bank representative, a government official, a distant relative, or a romantic interest. If the call was a voice-only call with no profile photo, note the number and any caller ID information, as you can still investigate the number through other means.
Step 3: Run a reverse face search on the profile photo
Upload the saved profile photo to facesearching. The face search engine extracts the facial geometry and compares it against a broad index of publicly available web content — social media, news, blogs, and other platforms. You can run a face search on facesearching in seconds. Wait for the full results to load before analyzing them.
A scammer can spoof a phone number and invent a name, but they cannot fabricate the years of consistent, real-world presence that a genuine person's face traces to across the public web. That is the gap face search exploits.
Step 4: Analyze the results for authenticity
Review the matches the search returns. If the photo belongs to a different person than the one the caller claims to be, the image has been stolen. If it appears on a stock photography site, the identity is fabricated. If the search returns no verifiable public footprint, the profile photo may be AI-generated or simply not exist elsewhere, both of which are red flags. If the face traces to a real person who has no connection to the caller's claims — for example, the photo belongs to a model or an unrelated professional — the caller is impersonating that person.
Step 5: Cross-reference the phone number independently
Search the phone number through reverse phone lookup services, scam-reporting databases, and a general web search to see if others have reported it as fraudulent. Scammers often reuse numbers across campaigns, so a number that appears in scam reports is a strong confirmation. Combine what you learn about the number with what the face search revealed about the photo. The ability to find someone by photo and cross-reference it with number-based reports creates a multi-layered picture of whether the sender is legitimate. For more on building investigations, see our tutorial on how to build a face search workflow for OSINT.
Step 6: Report and block the suspicious sender
If your investigation confirms the sender is suspicious, take action. Block the number on your phone and within the messaging app. Report the number to your mobile carrier's spam-reporting service, to the messaging platform's abuse team, and to consumer protection agencies like the FTC in the United States. Document your findings — screenshots, the phone number, and the face search results — so you have a record if the scammer contacts you again from a different number. Reporting helps protect others from the same operation.
Common Phone Scam Patterns to Recognize
- Impersonation scams: The caller claims to be from a bank, government agency, or tech company and demands urgent action.
- Romance scams: A stranger builds a relationship over messages, then asks for money for an emergency.
- Relative-in-distress scams: The caller claims a family member is in trouble and needs money immediately.
- Prize and lottery scams: The caller says you have won a prize but must pay fees to collect it.
- Investment scams: The caller promotes a fake investment opportunity with guaranteed returns.