How to Block Private Numbers and Unknown Callers Automatically

How to Block Private Numbers and Unknown Callers Automatically 

Getting calls from private numbers and unknown callers can be frustrating. Most times, these calls come from telemarketers, scammers, or even people who simply want to disturb your peace. The good news is that you can block private numbers and unknown callers automatically on your smartphone without stress.

In this guide, I’ll walk you through step-by-step methods to block hidden numbers on Android, iPhone, and through network settings. By the end, you’ll be able to filter out unwanted calls and enjoy your phone without unnecessary interruptions.

Why You Should Block Private Numbers

Private and unknown calls are often linked to:

• Spam calls from marketers or robocalls.
• Fraudulent calls from scammers who hide their identity.
• Unwanted harassment from individuals concealing their number.
• Distractions when you’re working or sleeping.

Blocking them helps you protect your privacy, save time, and reduce stress.

How to Block Private Numbers on Android

Most Android phones have a built-in feature to block hidden or unknown numbers. Here’s how:

Method 1: Using Phone App Settings

1. Open the Phone app on your device.
2. Tap the three-dot menu (⋮) or Settings.
3. Select Blocked numbers / Call blocking.
4. Toggle Block calls from unidentified callers or Block private/unknown numbers.

Once enabled, any caller without a number (private/withheld) will be blocked automatically.

Method 2: Using Google Phone App (for most Androids)

If you use the Google Phone app (available on the Google Play Store):

1. Open the app and tap the three dots (⋮).
2. Go to Settings > Blocked numbers.
3. Turn on Unknown to block calls from private/hidden numbers.

Method 3: Using Third-Party Apps

If your phone doesn’t support this feature by default, try apps like:

• Truecaller
• Hiya
• Mr. Number

These apps automatically detect spam calls, block hidden numbers, and give caller ID information.

How to Block Private Numbers on iPhone

For iPhone users, blocking private or unknown callers is simple:

1. Go to Settings.
2. Scroll down and tap Phone.
3. Select Silence Unknown Callers.
4. Turn on the feature.

Now, calls from private or unknown numbers go straight to voicemail, while your contacts, recent outgoing calls, and Siri Suggestions still ring normally.

How to Block Private Numbers Using Network Services

Some mobile networks also allow you to block anonymous calls directly:

• MTN Nigeria: Dial *133# or use MTN’s Do Not Disturb (DND) service.
• Airtel Nigeria: Activate DND via *2442# to reduce spam calls.
• Glo & 9mobile: Call customer care to activate caller filter services.

This method is helpful if you want the blocking done before the call even reaches your phone.

Alternative Options

• Do Not Disturb Mode (DND): Allow calls only from your contacts and block everyone else.
• Whitelist Calls: Add trusted contacts to a whitelist while blocking all other numbers.

Unwanted calls from private and unknown numbers don’t have to disturb your peace. With the right settings—whether on Android, iPhone, or via your network—you can block private numbers automatically and focus on important calls only.

If you want advanced protection, apps like Truecaller are highly recommended because they not only block private calls but also identify potential scam calls.

Pro Tip: Always keep your phone software updated because newer updates usually come with better call-blocking features.