How to Block Scam Calls on Android — Step-by-Step Guide for 2026
Android phones have powerful spam call filtering built right in, but most people do not know how to activate it. This guide walks you through enabling Google's spam filter, using your carrier's free scam-blocking tools, and setting up Do Not Disturb rules that still let important calls through.
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Built-In Android Features
Block Most Scam Calls Using Android's Built-In Tools
Android phones have powerful spam filtering built in. Most people do not know these features exist. This guide walks you through setting them up.
Note: This guide covers phone scams, not email. If you received a suspicious email, forward it to check@scam.support for a free risk assessment. For phone scams, report to the FTC — see all reporting agencies.
Step 1: Enable Caller ID and Spam Protection (Google Phone App)
If your phone uses the Google Phone app (most Android phones do):
- Open the Phone app
- Tap the three dots (menu) in the top right
- Tap Settings
- Tap Caller ID & spam
- Toggle on See caller and spam ID and Filter spam calls
This uses Google's database to identify and automatically filter known spam numbers.
Step 2: Enable Your Carrier's Spam Filter
Most carriers offer free call-blocking tools:
- T-Mobile/Sprint: Scam Shield (free tier available)
- AT&T: ActiveArmor (free tier available)
- Verizon: Call Filter (free tier available)
Download your carrier's app from the Play Store and activate the free spam-blocking features.
Step 3: Block Specific Numbers
After receiving a scam call:
- Open the Phone app
- Find the number in your call history
- Tap and hold the number
- Select Block/Report spam
Step 4: Use Do Not Disturb for Extra Protection
For seniors who want maximum protection:
- Open Settings
- Go to Sound & vibration (or Notifications)
- Tap Do Not Disturb
- Under Calls, select Contacts only or Starred contacts only
This blocks all calls except from people in your contact list.
Tips for Seniors
- Enabling Google's spam filter is the single most effective step — do it first
- Add important contacts (doctor, pharmacy, bank) to the phone's contact list
- The Do Not Disturb mode with "Contacts only" is very effective but requires maintaining an up-to-date contact list
- Check voicemail regularly since legitimate callers will leave messages
What To Do If You Get a Scam Call
What To Do
- Do not answer calls from unknown numbers — let them go to voicemail
- Never press buttons when a robocall asks you to
- Never provide personal information to an unsolicited caller
- Block and report the number after receiving a scam call
- Report persistent scam calls to the FTC
Report Scam Calls
Sources
- Google Support — Use caller ID and spam protection (Phone app)
- FTC Consumer Advice — Unwanted Calls, Emails, and Texts