How to Block Unwanted Calls and Texts on iPhone and Android

Why You Should Block Unwanted Calls and Texts

Unwanted calls and texts—whether from telemarketers, scammers, or unknown numbers—are more than just annoying. They can waste time, compromise privacy, or even lead to fraud. Both iPhone and Android offer built-in tools to filter and block these communications, along with third-party apps for additional protection. Here’s how to stop spam and unwanted contacts on both platforms.

How to Block Calls and Texts on iPhone

Using Built-in iPhone Features

1. Block a Specific Number:

   • Open the Phone app, tap Recents, and find the number.
   • Tap the info (i) icon, scroll down, and select Block this Caller.
   • Confirm by tapping Block Contact.

2. Silence Unknown Callers:

   • Go to Settings > Phone > Silence Unknown Callers.
   • When enabled, calls from numbers not in your contacts, Mail, or Messages will go straight to voicemail.

3. Filter Messages from Unknown Senders:

   • Open Settings > Messages and enable Filter Unknown Senders.
   • Unknown texts will be grouped under a separate tab in Messages.

Third-Party Call-Blocking Apps

While iOS restricts deep system-level call blocking, apps like Hiya or Truecaller can identify and suggest blocking spam numbers. These apps sync with your contacts and warn you about suspected scams.

How to Block Calls and Texts on Android

Using Built-in Android Features

1. Block a Number:

   • Open the Phone app, go to Recents, and long-press the number.
   • Select Block/report spam (varies by manufacturer).

2. Enable Call Screening (Google Pixel):

   • Go to Phone app settings > Spam and Call Screen.
   • Toggle Call Screening to filter suspected spam calls automatically.

3. Block Texts:

   • Open Messages, tap the conversation, then the three-dot menu.
   • Select Details > Block & report spam.

Carrier Services and Third-Party Apps

Many carriers (e.g., T-Mobile’s Scam Shield, Verizon’s Call Filter) offer spam protection for free or as a paid add-on. Apps like Should I Answer? provide crowd-sourced spam databases for broader blocking.

How to Stop Robocalls and Scams

Both platforms support STIR/SHAKEN, a protocol that verifies caller ID to combat spoofing. Enable these settings:

• iPhone: Settings > Phone > Call Blocking & Identification (toggle on scam warnings if available).
• Android: Phone app settings > Caller ID & spam (enable “Filter spam calls”).

For persistent issues, consider registering your number on the National Do Not Call Registry (U.S. only).

When to Use a Call-Blocking Accessory

For landline-like protection, hardware call-blocking devices (e.g., call-screening units for home phones) can be paired with smartphones via Bluetooth. These are useful if you frequently deal with robocalls on a secondary number.

What to Look for in Call-Blocking Tools

• Integration: Apps should sync with your contacts and update spam lists regularly.
• Carrier Support: Check if your carrier offers free scam-blocking tools.
• User Reviews: Reliable apps have high ratings and frequent updates.
• Permissions: Avoid apps demanding unnecessary access (e.g., camera, location).

Final Tips

• Regularly update your phone’s OS for the latest security patches.
• Avoid answering unknown calls—even to “stop” them—as this confirms your number is active.
• For extreme cases, change your number (last resort).

By combining built-in settings, carrier tools, and trusted apps, you can significantly reduce unwanted interruptions on iPhone or Android.