Unwanted calls from restricted, private, or unknown numbers are more than just a nuisance—they can be a gateway for scams, phishing, and persistent telemarketing. In 2025, blocking restricted calls is a top priority for smartphone users, as spam and robocalls continue to rise. Whether you’re using an Android device or an iPhone, this guide will walk you through the most effective methods to stop restricted calls, silence unknown numbers, and protect your privacy using built-in features, third-party apps, and carrier services.
According to recent trends, over 70% of smartphone users report receiving unwanted calls from restricted or unknown numbers at least once a week. These calls often mask the caller’s identity, making it difficult to screen or block them directly. Fortunately, both Android and iPhone offer built-in tools and settings to help you regain control. Below, you’ll find step-by-step instructions for both platforms, as well as recommendations for the best call-blocking apps and additional tips to keep your phone spam-free.
Why You Should Block Restricted Calls
Restricted calls are not just annoying—they can be dangerous. Scammers frequently use private or blocked numbers to hide their identity while attempting to steal personal information or money. By blocking these calls, you can:
- Prevent scams and phishing attempts, which often start with a call from an unknown or restricted number.
- Reduce distractions from telemarketers, robocalls, and other unwanted interruptions.
- Protect your privacy by limiting who can reach you directly.
- Improve productivity by avoiding constant interruptions from unknown callers.
How to Block Restricted Calls on Android (2025 Methods)
1. Block Individual Restricted Numbers
If you’ve received a call from a restricted number, you can block it directly from your call log:
- Open the Phone app and go to your call log.
- Find the entry for the restricted call and tap the information icon (i) next to it.
- Select “Block number” or “Block contact”.
- Confirm your choice. The number will now be blocked from calling you again.
2. Use Built-in Call Blocking Features
Most modern Android devices allow you to block all private or unknown calls:
- Open the Phone app and tap the three-dot menu (⋮) in the top-right corner.
- Go to Settings > Blocked numbers.
- Enable the option to “Block private/unknown numbers”.
- Some devices may also offer a “Do Not Disturb” mode, which silences all calls except those from your contacts.
3. Install a Third-Party Call Blocker App
For more advanced protection, consider using a call-blocking app. Popular options include:
- Hiya: Blocks spam and scam calls, and identifies unknown numbers.
- Truecaller: Uses a community-based database to block spam and restricted calls.
- CallApp: Offers real-time caller ID and spam blocking.
- RoboKiller: Uses AI to block robocalls and telemarketers.
These apps often provide additional features like call recording, reverse number lookup, and custom block lists.
4. Contact Your Carrier
Many mobile carriers offer call-blocking services as part of their plans. For example:
- AT&T provides Call Protect, which automatically blocks fraudulent calls.
- Verizon offers Call Filter, which identifies and blocks spam calls.
- T-Mobile includes Scam Shield, which blocks scam calls and provides a second phone number for added privacy.
Check with your carrier to see what options are available and how to enable them.
How to Block Restricted Calls on iPhone (2025 Methods)
1. Silence Unknown Callers
iPhones have a built-in feature called “Silence Unknown Callers”, which sends calls from numbers not in your contacts straight to voicemail:
- Go to Settings > Phone.
- Tap “Silence Unknown Callers” and toggle it on.
- Calls from unknown or restricted numbers will now go to voicemail without ringing your phone.
2. Block Individual Numbers
If a restricted number has called you, you can block it manually:
- Open the Phone app and go to the Recents tab.
- Tap the information icon (i) next to the restricted call.
- Scroll down and select “Block this Caller”.
3. Use a Call Blocking App
iPhone users can also benefit from third-party apps like:
- Hiya: Identifies and blocks spam calls.
- Nomorobo: Blocks robocalls and telemarketers.
- RoboKiller: Uses AI to block spam calls and provides a spam call log.
These apps integrate with your iPhone’s call log and provide real-time protection against unwanted calls.
4. Enable Do Not Disturb Mode
If you want to silence all calls except those from your contacts, enable Do Not Disturb:
- Go to Settings > Focus > Do Not Disturb.
- Toggle it on and customize the settings to allow calls only from your contacts.
5. Contact Your Carrier
Like Android users, iPhone users can also take advantage of carrier-provided call-blocking services. Contact your carrier to learn about available options, such as:
- AT&T Call Protect
- Verizon Call Filter
- T-Mobile Scam Shield
Additional Tips to Stop Unwanted Calls
- Register with the National Do Not Call Registry to reduce telemarketing calls. While this won’t block restricted calls, it can help reduce the overall number of unwanted calls you receive.
- Use Google Voice for an extra layer of protection. Google Voice allows you to screen calls and block restricted numbers before they reach your main phone line.
- Keep your phone’s software up to date. Manufacturers regularly release updates that improve call-blocking features and security.
- Be cautious with your phone number. Avoid sharing it publicly online or with untrusted sources to minimize exposure to spam calls.
Common Mistakes to Avoid
When blocking restricted calls, it’s important to avoid these common pitfalls:
- Blocking important calls: Some legitimate callers, such as doctors or businesses, may use restricted numbers. Be cautious when blocking all unknown calls.
- Ignoring app permissions: Some call-blocking apps require access to your contacts or call logs. Always review permissions before installing.
- Relying solely on one method: Combining built-in features, third-party apps, and carrier services provides the best protection.
- Not updating your block list: Regularly review and update your blocked numbers to ensure continued protection.
What to Do If You Accidentally Block an Important Call
If you realize you’ve blocked a number you shouldn’t have, you can easily unblock it:
- On Android, go to Settings > Blocked numbers and remove the number from the list.
- On iPhone, go to Settings > Phone > Blocked Contacts and swipe left to unblock the number.
Advanced Solutions for Persistent Spam Calls
If you’re still receiving unwanted calls despite using the methods above, consider these advanced solutions:
- Use a secondary phone number for online sign-ups or public listings. Services like Google Voice or Burner provide disposable numbers that can be discarded if they become overwhelmed with spam.
- Enable STIR/SHAKEN protocols if your carrier supports them. These protocols help verify caller ID information and reduce spoofed calls.
- Report spam calls to your carrier or the FCC. Reporting helps improve call-blocking databases and protects others from scams.
How Search Intent and User Trends Influence Call Blocking in 2025
In 2025, user behavior and search intent play a significant role in how people look for solutions to block unwanted calls. According to recent SEO trends, users are increasingly searching for:
- “How to block restricted calls on [Android/iPhone]”
- “Best call blocker app for spam calls”
- “Why am I getting so many spam calls?”
- “How to stop unknown callers on my phone”
These searches reflect a growing demand for informational and solution-oriented content. Users want clear, actionable steps to protect their privacy and reduce interruptions. By aligning your content with these search intents, you can provide value and improve your visibility in search results.
The Future of Call Blocking: AI and Voice Search
As technology evolves, so do the methods for blocking unwanted calls. In 2025, AI-powered call screening and voice search optimization are becoming increasingly important. AI can now analyze call patterns, detect spam in real time, and even answer calls on your behalf to filter out unwanted callers. Voice search is also shaping how users find solutions, with more people asking their virtual assistants, “How do I block spam calls on my phone?”
To stay ahead, consider using apps that leverage AI for call blocking and optimizing your content for voice search queries. This ensures your solutions remain accessible and effective as user behavior continues to evolve.
Conclusion
Blocking restricted and unknown calls is essential for protecting your privacy, reducing distractions, and avoiding scams. Whether you’re using an Android device or an iPhone, there are multiple ways to stop unwanted calls, from built-in features and third-party apps to carrier services and advanced solutions. By combining these methods and staying informed about the latest trends, you can keep your phone spam-free and enjoy a more peaceful, secure experience.
For more tips on digital privacy and smartphone security, stay tuned to our blog for the latest updates and expert advice.
