# 3 Best Caller ID Apps for Android to Block Spam Calls *Published:* 2026-01-17 *Author:* Farzan Hussain Spam calls remain a daily nuisance despite STIR/SHAKEN, the US carrier-level call-authentication system, and similar frameworks in the UK and EU. The best caller ID [apps](https://bestforandroid.com/best/apps-android/ "Best Apps Category") now lean on community-reported numbers, carrier-shared databases, and on-device machine learning rather than scraping address books (a tactic that got several apps banned in 2020-2023). We tested three on Pixel 8a and Galaxy S24 over two months of real-world calls. The picks emphasize privacy (no contact-book uploads), accuracy on legitimate spam and scam calls, and clean integration with the stock Phone app. ### TL;DR **The pick:** On Pixel, the built-in Google Phone app with Call Screen handles spam better than any third-party app, free. **Runner-up:** On Galaxy, Hiya (also licensed to Samsung Smart Call) is the runner-up and a solid third-party choice. **Skip if:** Skip Truecaller if your concern is privacy. Their business model still leans heavily on contact-list data. For a deeper reference, see [Google’s official Android Help Center](https://support.google.com/android/). Pixel Call Screen, the best built-in option ------------------------------------------- On Pixel 8a, 9, and 9 Pro, Google Phone’s Call Screen uses on-device AI to answer suspected spam calls, ask the caller to identify themselves, and either pass legitimate calls through or hang up on spam. It runs without uploading audio to Google’s servers and is free. Settings, Spam and Call Screen, Call Screen, Unknown numbers, and choose Automatically screen, decline robocalls. This catches the majority of US robocall spam without you ever seeing a ring. Hiya and Samsung Smart Call --------------------------- Hiya powers Samsung Smart Call on Galaxy S20+ devices, AT&T Active Armor, and several other carrier branded apps. The database is large and community-fed. Free tier covers spam-labeling on incoming calls; paid Hiya Premium ($4/month) adds reverse-lookup and a stronger spam shield. On Galaxy S24 and S25, enable Settings, Phone, Caller ID and spam protection. The integration with the stock Phone app is invisible; the spam label just appears under unknown numbers. Robokiller and YouMail for the heaviest spam loads -------------------------------------------------- If you receive dozens of spam calls per day (some industries and some geographic areas still see this), the heavier-handed options like Robokiller and YouMail run answer bots that engage spammers and waste their time. Both cost around $4-5 per month. The trade-off: more intrusive integration, occasional false positives on legitimate calls from numbers your carrier has not seen before. Worth it if your phone rings spam more than five times a day. Why Truecaller is not in our top picks -------------------------------------- Truecaller’s directory is built largely from contact lists uploaded by users on signup. Even after their post-2023 reforms, the EU enforcement has scrutinized this model. If a friend uploads your contact entry to Truecaller, your name appears in their directory; you can unlist (see our separate guide) but the default is in. The actual spam-filtering accuracy is decent but not better than Hiya or Pixel Call Screen. We do not recommend it as a primary choice. ### Which app fits you? - **Best on Pixel:** Google Phone Call Screen. Built-in, free, on-device AI. - **Best on Galaxy:** Hiya via Samsung Smart Call. Built-in, free spam labels. - **Best for heavy spam loads:** Robokiller or YouMail. Active spam-answering bots. - **Best for carrier-level filtering:** Your carrier’s own app (AT&T Active Armor, T-Mobile Scam Shield, Verizon Call Filter). **Important:** Any caller ID app that asks for your contact list during signup is uploading those contacts to build its directory. The legitimate options (Call Screen, Hiya) work without contact-list access. Read permissions carefully. FAQ --- ### Do these apps cost money? Pixel Call Screen and Hiya basic are free. Robokiller, YouMail, and Hiya Premium are paid. ### Will they block legitimate calls? Occasionally yes. Tune the aggressiveness level in app settings; whitelist your contacts. ### Do they require root? No. All run as standard Android phone-app integrations. ### Can I block individual numbers? Yes, in the stock Phone app long-press the call entry, Block number. No third-party app needed. Bottom line ----------- On Pixel, Call Screen is the strongest answer: free, on-device, no contact uploads. Galaxy users get Hiya through Samsung Smart Call. Heavy spam loads justify Robokiller or YouMail. Skip the contact-uploading directory apps; the legitimate options are better and respect your privacy. #### How we put this guide together The picks and steps in this guide reflect what works on current Android builds. Our editors test apps on Pixel 8a and Galaxy S24 hardware running Android 15 and Android 16, cross-check against vendor documentation, and update each guide when behavior changes. ### Related on BestForAndroid - [The Best Spam and Robocall Blocker Apps for Android](https://bestforandroid.com/call-blocker-apps/) - [10 Best eSIM Apps for Android and iOS](https://bestforandroid.com/best-esim-apps-for-android/) - [The Best File Manager Apps for Android](https://bestforandroid.com/file-manager-apps/) - [6 Best Floor Plan Creator Apps for Android](https://bestforandroid.com/floor-plan-creator-apps/)