You can block unwanted calls and texts on Android using built‑in tools or your carrier’s blocking features. Blocking a number prevents it from calling, texting, or leaving voicemails (depending on your carrier). This guide explains all the ways to block numbers and how to manage blocked contacts.
Method 1: Block a Number Using the Phone App
Steps
1. Open the Phone app.
2. Go to Recent calls or Contacts.
3. Tap the number you want to block.
4. Tap Block or Report Spam.
5. Confirm the action.
Notes
- Blocked numbers cannot call or text you.
- They may still leave voicemails depending on your carrier.
Method 2: Block a Number in the Messages App
Steps
1. Open the Messages app.
2. Open the conversation with the number.
3. Tap the three dots (menu).
4. Select Block or Details → Block.
5. Confirm the block.
Notes
- Messages from blocked numbers will not appear.
- You can unblock the number at any time.
Method 3: Block Unknown or Private Numbers
Steps
1. Open the Phone app.
2. Tap the three dots → Settings.
3. Select Blocked numbers.
4. Enable “Block calls from unidentified callers.”
Notes
- Blocks callers with hidden or private numbers.
- May block legitimate calls from businesses or doctors.
Method 4: Use Your Carrier’s Call Blocking
Examples
- Bell Call Control
- Rogers Spam Call Blocking
- Telus Call Control
- AT&T Call Protect
- T‑Mobile Scam Shield
- Verizon Call Filter
Benefits
- Blocks spam calls before they reach your phone.
- Can block entire categories of unwanted calls.
- Works even if you switch phones.
Method 5: Use Third‑Party Blocking Apps
Examples
- Hiya
- Truecaller
- Call Blocker
Notes
- Provides advanced spam detection.
- Can automatically block known spam numbers.
- Some apps require additional permissions.
How to Unblock Numbers
Steps
1. Open the Phone app.
2. Tap the three dots → Settings.
3. Select Blocked numbers.
4. Tap the X next to the number you want to unblock.
What Happens When You Block a Number
- Calls go straight to voicemail (carrier‑dependent).
- You will not receive texts or MMS messages.
- The sender is not notified that they are blocked.
- Voicemails may still appear in your inbox.
Troubleshooting Call Blocking Issues
- Restart your phone after blocking a number
- Update the Phone and Messages apps
- Disable third‑party call apps that may override blocking
- Check if your carrier supports voicemail blocking
- Reset network settings if blocking does not work
When to Seek Professional Help
- Blocked numbers still ring through
- Phone app crashes when blocking numbers
- Carrier features are not working correctly
- System settings fail to save blocked numbers