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On a compatible Samsung Galaxy phone, open the Phone app, go to More options > Settings, and turn on Caller ID and spam protection. Then choose whether to block all calls identified as spam or scams, or only high-risk calls. For numbers that keep calling, add them under Block numbers. Labels and availability vary by phone, software version, and carrier.
Turn on Samsung’s spam and scam protection
- Open the Phone app.
- Tap More options (the three-dot menu), then Settings.
- Turn on Caller ID and spam protection. Review the terms and privacy policy, and accept them if you want to use the feature.
- Open the additional spam-protection settings and turn on Block spam and scam calls.
- Choose the blocking level available on your phone.
Samsung’s current U.S. instructions describe two levels:
| Setting | What it does | Trade-off |
|---|---|---|
| Block all identified spam and scam calls | Blocks calls the service identifies as spam or scams. | More flagged calls are blocked, but a wanted call could be filtered. |
| Block only high-risk scam calls | Blocks calls identified as high-risk scams. | Lower-severity calls flagged as spam may still ring. |
The caller identification service can mislabel calls, and it cannot reliably identify every unwanted call. Caller ID spoofing—when a caller disguises the number being displayed—can also make filtering less effective. If missing an unfamiliar but legitimate call would be costly, the high-risk-only setting is the more cautious choice.
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Block a specific number
- In the Phone app, tap More options > Settings > Block numbers.
- Enter the number, or select it from Recents, Messages, or Contacts if those choices appear.
- Confirm the block.
You can also use Block number for an individual caller from the call interface when that option is available. To report a suspected fraudulent caller through Samsung’s interface, select Report number, choose a category, and optionally add a comment.
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Block calls from unknown or unspecified numbers
Samsung documents a Block calls from unknown numbers control under number-blocking settings. This is broader than blocking a single caller: legitimate calls from people whose numbers are not saved may also be affected. Check the wording on your phone before enabling it, because menu labels and behavior can vary.
Check for call screening on newer Galaxy phones
Samsung’s current U.S. support information limits its newer Call screening and AI Scam detection features to Galaxy phones running Android 16 with One UI 8.5 or higher. They are not baseline features for every Samsung phone.
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Call screening
On a compatible phone, go to Phone > More options > Settings > Call screening. Samsung describes an option to automatically screen unknown callers. If this setting is absent, your model or software may not support it.
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On compatible devices, Samsung describes an alert when a potential scam is detected, so you can decide whether to answer or block. Treat this as an additional warning, not a guarantee that every scam call will be detected.
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If the spam settings are missing or ineffective
Check compatibility and updates
Samsung says Smart Call may not be available on all carriers or models. Check for a software update and look again for Caller ID and spam protection. If you are considering Samsung’s suggested later troubleshooting step of clearing Phone app data, first check what app settings and data may be reset; it can restore the app’s settings to their defaults.
Ask your carrier about call filtering
The Federal Trade Commission recommends checking your wireless provider’s website or contacting customer service about call-blocking and call-labeling options. A labeling service may identify a suspected spam call without stopping it; a blocking service may suppress it, silence it, or send it to voicemail. Availability, behavior, and cost depend on the provider and service.
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Expect some false positives and missed calls
No filter is perfect. If a wanted call was blocked, review the blocked-number list and adjust the spam-protection level or unknown-caller setting. If unwanted calls continue, combine Samsung’s controls with carrier options rather than assuming one setting can stop every caller.
What the Do Not Call Registry can—and cannot—do
In the United States, the National Do Not Call Registry is intended to reduce sales calls from companies that follow the law. It does not block calls, and it does not stop scammers who make illegal calls. Registering your number should not be treated as a technical call filter.
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The FTC reported more than 258 million numbers on the Registry and more than 2.6 million Do Not Call complaints for fiscal year 2025, in figures reported January 6, 2026. Those totals describe registry participation and complaints; they do not mean that registered phones are protected from all unwanted calls.
Report suspected illegal calls in the United States
Report to the FTC
If you receive a suspected illegal robocall, hang up and do not press prompts. You can report unwanted calls at DoNotCall.gov. Include your phone number, the caller ID number even if you think it was spoofed, any callback number, and the date and time when known. If you lost money or have information about a scammer, report it at ReportFraud.ftc.gov.
Submit an FCC complaint
The Federal Communications Commission accepts unwanted-call complaints as information that may inform policy and enforcement. It does not resolve individual complaints. These reporting options are U.S.-specific; people elsewhere should use the relevant national consumer-protection and telecommunications authorities.
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