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In Phone by Google, turn on caller ID and spam protection, then enable Filter spam calls if that option is available. It filters calls the app identifies as spam; it does not silence every caller who is not in your contacts. Calls from schools, clinics, delivery drivers, and other new numbers may still come through.
Turn on spam filtering in Phone by Google
- Open the Phone app.
- Tap More options (the three-dot menu), then Settings > Caller ID and spam.
- Turn on See caller ID and spam.
- If you see Filter spam calls, turn it on to send calls identified as spam to filtering.
Google says some steps require Android 6.0 or later. The exact controls can vary by device, and the filter toggle may not appear when automatic Call Screen is enabled. On Pixel phones, options vary by model, so check the settings available on your device rather than relying on one universal menu path. Google’s Phone app instructions explain the controls.
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What filtering changes—and what it does not
Spam filtering and blocking unknown or private numbers are separate controls. The spam filter acts on calls identified as spam; it is not a rule to reject all numbers missing from your contacts. Google’s Android guidance discusses blocking unknown or private numbers separately and says that setting does not affect numbers that are not saved in your contacts. Do not turn on contact-based or private-number blocking if you need calls from legitimate unsaved numbers. Android’s guidance on stopping and blocking unwanted calls describes the distinction.
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#1 Best Overall
- REDUCE UNWANTED CALLS & TAKE BACK CONTROL – The CPR V100K helps reduce unwanted spam, scam and robocalls on your landline. Known nuisance numbers in the preloaded database are blocked automatically, while new unwanted callers can be blocked at the touch of a button.
- 100,000 KNOWN NUISANCE NUMBERS PRELOADED – Includes a large database of known nuisance numbers for immediate protection. The database contains reported nuisance numbers from across the USA and is not a list of 100,000 numbers specific to your local area.
- BLOCK NEW CALLERS WITH ONE TOUCH – Scam callers frequently change or spoof their phone numbers, so no call blocker can stop every unwanted call automatically. When a new unwanted number gets through, simply press the large red BLOCK NOW button to prevent repeat calls from that number. Store up to 10,000 additional numbers.
- SIMPLE TO USE – NO APP OR SUBSCRIPTION – Connect the V100K to your compatible landline and start taking control of unwanted calls. No app, Wi-Fi, monthly subscription or external power supply required. The large display and tactile BLOCK NOW button make it particularly easy to use.
- IMPORTANT COMPATIBILITY INFORMATION – Requires an active Caller ID service. Designed for compatible traditional analog landline services. Not compatible with many internet-based or digital VoIP telephone services. Please check your telephone service before ordering.
Where filtered calls go
Google’s Phone app Help explains: “You don’t get missed call or voicemail notifications, but filtered calls are in your call history and you can check your voicemail.” Review recent calls and voicemail if you think a legitimate caller was classified as spam. If a number is marked incorrectly, use the app’s Not spam control to report the mistake. Google Phone app Help describes this behavior.
Consider Call Screen only if your device supports it
Call Screen is different from the basic spam filter: on supported devices, it can answer or screen unknown callers, filter detected spammers, and show information before you decide whether to pick up. Availability depends on device, country, and language. Google Play says automatic screening is available only in the US and English, while manual screening is not available in every country or language; screening may also miss spam. Check the options shown on your phone and the Phone by Google listing before relying on it.
Rank #2
- This is the latest version Telephone Call Blocker with hidden or unavailable call numbers can be blocked. And there is no fees to use it; Please keep the manual for future use.
- Block up to 4000 individual phone numbers, including incoming and outgoing calls , prefixes and up to 10 digit area codes.
- One-touch to Block: Locate a number and then press Block to add it to the blacklist.Better set the call blocker in series ( one end of it connected to your phone and another end to the PSTN telephone line); Though it can also be set up parallel, but not compatible with some phone systems.
- Permanent storage of the numbers in the blacklist even power is off or telephone line is plugged out.
- Battery free: It is line powered, no need battery. And it works with almost all single line telephones. If you find some numbers are blocked but you never mean to, then press Block and check your blacklist, then delete those numbers which like area codes or prefix numbers.
Check privacy and data handling
Google says Phone may send information about calls to Google to identify callers or determine whether a call is spam when a number outside your contacts calls you or you call it. Google also says it does not get phone numbers from your contact list. This is Google’s description of the feature’s data handling, not an independent audit. Read the app’s current privacy information if you want to assess whether that data flow suits you. Google’s help page explains its caller ID and spam protection.
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Best Value
- [‼️IMPORTANT‼️] A practical, budget-friendly unlocked Android phone for calls, texts, navigation, everyday apps, and casual entertainment. ❌ NOTE: This device is NOT compatible with AT&T or Cricket. Please confirm carrier compatibility before ordering.❌
- 【More to See: 6.56-Inch 90Hz Display】 Resolution: 1210 x 540. The spacious waterdrop screen provides room for messages, maps, video calls, web browsing, photos, and videos, while the 90Hz refresh rate supports smooth scrolling.
- 【Ready for Everyday Tasks: Android 16 Go】 Runs on Android 16 Go with a Unisoc T7100 octa-core processor for calls, texts, maps, music, browsing, social media, and lightweight apps. Best for daily use, not heavy gaming or intensive multitasking.
- 【Power That Lasts: 5000mAh Battery】 Supports calls, messaging, navigation, browsing, music, and standby use. USB-C supports up to 10W charging and 2.3W OTG reverse charging. Standby time is rated up to 332 hours; actual results vary by use.
- 【Two Lines, One Phone: Unlocked Dual-SIM 4G LTE】 Supports dual SIM dual standby with a tray for two Nano-SIM cards and one microSD card. Both SIM slots support compatible 4G LTE networks. No 5G or eSIM. Not compatible with AT&T or Cricket.
Rank #4
- [ IMPORTANT NOTE 1 ] This product is a call blocker only and does not have a telephone or answering machine function. No phone or answering machine is included in the package. Before purchasing, please make sure that your telephone line has Caller ID service and that it is an ANALOG line. the ENF860 requires Caller ID service from your telephone line provider to work and is for analog lines only ! No mains power required, just plug in the phone line to use
- [ IMPORTANT NOTE 2 ] In BLOCK mode, there will STILL BE some new variant numbers bypassing the database making the phone ring, you NEED to manually set up to block them OR switch to FAMILY mode to let only the numbers in FAMILY LIST through. Please refer to the manual for the CORRECT SETTINGS.
- Dual mode;In BLOCK mode you can block callers by Numbers and Names; In FAMILY mode all callers outside the FAMILY LIST are blocked;The two modes can be switched at any time as needed and NO data will be lost after switching modes.
- Preloaded with a large number of spam numbers that have been the subject of repeated complaints ; Users can also manually add 4000+ numbers to the NUMBER LIST to build their own database ; Add 256 NAMES to block calls by name.
- Blocks INTERNATIONAL, PRIVATE/WITHHELD, and Out of Area numbers by default; users can SET to block the entire area code or changing numbers starting with a fixed number, such as 00, 800, 855, 999, 7324, 33626, 134567, etc.
Rank #3
- How it Works: SPAM identified calls are instantly blocked automatically. Preferred Calls Ring through like normal with Caller ID displayed. Your phones connected to the TEL port Won't Ring on Blocked Calls. Create your own Invited or Allowed Family (White List) and block All other callers. Use the Dual Block Buttons to Block a NAME or NUMBER Displayed. Remote Block a Call when Dialing * 2 # through your telephone handset.
- The Patented ProSeries 3 Call Blocker from Digitone is an Easy Installation and is Simple to Use. No need to rush over and tap a red button when the ProSeries has already blocked a known unwanted SPAM, Out of Area, Private, Anonymous, 800 Service, ROBO?, Dashes, "Quotes" or V123+ call. Use Call History to select Any Caller to Block by (Double Tap) Name or Number. Block any NAME like: Unavailable, Unknown, SCAM RISK, City + State, Potential Scam, Wireless Caller. Block ANY call without answering, as they call in with either RED button.
- Feel confident that the ProSeries already Blocks Millions of Known Unwanted Numbers and Fake Names. No need to change your existing phones or service. Works with Any Analog Corded, Cordless Phone or Fax System on any telephone service. Large Back-Lighted Display. Got questions? Call the number on the front screen of the ProSeries 3.
- Works with all USA phone companies: AT&T, Cox, Spectrum, CenturyLink, Cable Modems, DSL, FIOS, or Digital Services from VoIP Telcos like [V] from Verizon, Ooma Telo, Ooma Basic, Vonage, Magic Jack etc. Also, works in Mexico, Canada, Brazil, European Union (ETSI), Australia, Singapore and others with North American standardized phone lines.
- Allow any blocked caller to ring through like normal with the Green Invite Button. Double Tap the Green Button to add VIP callers shown in Call History. Note: Caller ID Name and Number Service from your phone company is required for this model to work automatically.
If the filter is missing or not enough
- Check the Phone app and device controls: The filter may be unavailable on your device or absent when automatic Call Screen is active. Pixel options vary by model.
- Review Call Screen availability: It is an option only on supported devices and in supported regions and languages; it is not a universal Android setting.
- Investigate third-party call-screening apps cautiously: Android supports call-screening apps, but their features and privacy practices differ and can change. Review current permissions and data-handling terms before installing one; this is an alternative to investigate, not a tested recommendation. Android’s developer documentation describes supported call-screening APIs, including access to carrier verdict data on Android 11 and later devices that support the relevant APIs. That does not mean every phone or app receives identical data. Android Developers: Prevent caller ID spoofing.
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