📵 How to Stop Unknown Calls on Android | Block Spam & Private Numbers
Are unknown callers, spam telemarketers, or private numbers disturbing your peace? You're not alone. Millions of Android users struggle with these unwanted interruptions. In this in-depth guide, we'll show you the most effective methods to block unknown calls on Android, including spam detection apps, built-in phone features, and expert tips to regain control of your phone.
📚 Table of Contents
📲 Block Spam Calls Instantly!
Install the trusted Truecaller app to stop unknown, private, and spam calls on your Android device.
🚀 Download Now🔧 Method 1: Block Unknown Callers via Android Settings
📱 For Google Phone App (Stock Android, Pixel, Nokia):
- Open the Phone app.
- Tap the 3-dot menu > Settings.
- Tap Blocked numbers.
- Enable Block unknown callers.
📱 For Samsung Devices:
- Open the Phone app.
- Go to More (3 dots) > Settings.
- Tap Block numbers.
- Toggle ON Block unknown/private numbers.
🔕 Method 2: Use “Do Not Disturb” for Contact-Only Calls
- Go to Settings > Sound > Do Not Disturb.
- Select People or Calls.
- Choose Contacts only.
- Turn on “Do Not Disturb” via Quick Settings panel.
Only saved contacts will be able to call you — perfect for meetings or sleep.
📲 Method 3: Use Truecaller to Stop Spam Calls
Truecaller is the most trusted app to block spam and unknown numbers:
- Auto-blocks top spam callers.
- Shows caller identity before answering.
- Lets you customize block settings easily.
🔐 Method 4: Use Manufacturer Filters (MIUI, Realme UI, etc.)
🔹 Xiaomi/Redmi (MIUI):
- Open the Security app.
- Go to Blocklist.
- Turn on Block unknown/private calls.
🔹 Realme/Oppo (ColorOS):
- Open Phone Manager.
- Tap Harassment filter.
- Configure call blocking rules.
🎧 Bonus: Call Recording & Reporting Tips
- Enable call recording in supported regions for evidence.
- Report spam numbers in Truecaller or your Google Phone app.
- Use TRAI’s DND feature in India: dial 1909 or use DND apps.
❓ Frequently Asked Questions
Q. Can I block all unsaved numbers?
Not natively on Android. Use Truecaller or third-party apps for this feature.
Q. Will I miss important delivery or bank calls?
Yes, if using “Contacts Only” mode. You can whitelist known important numbers in your spam filter app.
Q. Is it safe to use Truecaller?
Yes, it's widely used globally. Just manage permissions carefully during setup.
📌 Final Thoughts
Unwanted calls can waste your time and energy. With these methods — from Android settings to Truecaller and OEM features — you can now block spam, unknown, and private callers easily.
👉 Read Also: How to Detect Phishing Links in WhatsApp
Stay safe and in control — for more tech guides, follow Domebytes.com.
Written by: Amal Aji – Ethical Hacker & Blogger at Domebytes
Tags: block unknown calls android, stop spam calls, private number android, truecaller, android call filter
