Silence Unknown Callers on iPhone

 Receiving constant calls from unknown numbers can be frustrating and intrusive. Fortunately, iPhone offers a built-in feature called Silence Unknown Callers that automatically mutes calls from numbers not in your contacts. In this OnePlus guide, we’ll show U.S. and Canadian iPhone users how to enable this feature, how it works, and tips for managing calls effectively.

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Why Use Silence Unknown Callers

Silence Unknown Callers helps:

• Reduce spam, robocalls, and unwanted telemarketing calls.

• Prevent interruptions during work, meetings, or personal time.

• Ensure that only known contacts or recently communicated numbers can reach you directly.

OnePlus Tip: Legitimate callers can still leave voicemails, so you won’t miss important messages.

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Step 1: Enable Silence Unknown Callers

1. Open Settings on your iPhone.

2. Scroll down and tap Phone.

3. Tap Silence Unknown Callers.

4. Toggle the switch On.

Once enabled, calls from numbers not in your contacts, Mail, or Messages go straight to voicemail.

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Step 2: Understand How It Works

• Calls from unknown numbers are silenced but still appear in the Recents list.

• You’ll receive notifications for voicemails left by silenced numbers.

• Numbers you’ve recently called or messaged are not silenced.

OnePlus Tip: This feature works best for users who primarily communicate with known contacts and want to reduce spam efficiently.

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Step 3: Manage Exceptions

If you want certain unknown numbers to reach you:

• Add the number to your Contacts.

• If a business or service leaves a voicemail, consider adding them if you need direct contact.

This ensures essential calls are never missed.

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Step 4: Combine With Other Spam Prevention Tools

For maximum protection:

• Use carrier spam-blocking features:

  • AT&T Call Protect

  • Verizon Call Filter

  • T-Mobile Scam Shield

• Consider third-party apps:

  • Truecaller – identifies unknown numbers

  • Hiya – blocks robocalls automatically

OnePlus Tip: Combining iPhone settings with carrier or app solutions drastically reduces interruptions from unknown callers.

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Step 5: Report Persistent Spam Calls

Even with Silence Unknown Callers enabled, some unwanted calls may still reach voicemail. You can report spam to:

• FTC: donotcall.gov

• FCC: fcc.gov/robocalls

Keeping a log of frequent spam numbers helps authorities track and reduce unwanted calls.

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Related OnePlus Guides

• Block Adult Websites on Safari for US Users

• Fix Dropped Calls on Verizon, AT&T, T-Mobile iPhones

• What to Do If You Are on the Do Not Call List and Still Get Calls

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FAQ

1. Will Silence Unknown Callers block all unknown numbers?
Yes, numbers not in your contacts, messages, or recent calls will be silenced.

2. Can important calls be missed?
Potentially, but legitimate callers can leave voicemails. Adding critical numbers to contacts ensures they reach you.

3. Can this feature be used alongside third-party spam apps?
Yes, combining features maximizes call-blocking efficiency.

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Final Thoughts

Silence Unknown Callers is a powerful iPhone tool for reducing spam and robocalls while keeping your phone accessible to important contacts. By enabling it and combining it with carrier or app-based solutions, OnePlus recommends this feature as a simple, effective way to maintain privacy and minimize interruptions in daily life.