No Caller ID: How To Unmask Blocked/Unknown Calls (iOS & Android)

no caller ID

No Caller ID calls are the worst, there is no denying it.  Whether you just got your first one, or have been getting inundated with No Caller ID calls, each call is a frustrating experience of wondering who’s on the other end and why they’re calling to harass you. If you’ve ever felt that frustration, you’re not alone.

But there is a solution! With TrapCall, you can unmask these blocked numbers and find out exactly who’s calling you from No Caller ID. That means their phone number, name, and even their address. Plus, with TrapCall you can even blacklist the unmasked phone number to prevent them from continuing to harass you.

You can start a free 7-day trial of TrapCall to begin unmasking these No Caller ID calls today, or, read below to learn more about these pesky calls and exactly how TrapCall solves the problem.


no caller id

What is a “No Caller ID” call?

A No Caller ID call is a regular phone call that has purposefully had identifying information stripped from it. These are also called blocked, hidden, masked, or unknown calls. “No Caller ID” is typically what you’ll see on the caller ID for a blocked call on an iPhone, but other phones may use a different term in the caller ID. One of the most common ways of placing a No Caller ID call is by dialing *67 before a phone number when making a call, as this automatically blocks your caller ID to the call recipient. Usually, this is done because whoever is calling you doesn’t want to be tracked.

no caller id

In addition, telemarketers use No Caller ID when they do not want to get reported for conducting their marketing illegally. Because the people they call won’t see their caller ID or possess the ability to call them back, they think they won’t get caught. Calling from a blocked number or a spoofed number is also a common tactic to attempt to steal victims’ personal identity, money, and precious time. 

Often times, people who have been blocked from calling someone, perhaps due to a breakup, harassment, or some type of illegal activity, will call them using No Caller ID so that their call gets through. Blocking caller ID allows the caller to continue making these unwanted calls, as the recipient has no way to block them or reveal who the caller without a third party Android or iOS app. 

How do I unmask & block No Caller ID calls on iPhone to find out who’s calling?

TrapCall is the best and most reliable way to unmask No Caller ID calls. We’ve been unmasking blocked calls for tens of thousands of users since 2007, and we have a 4.5 star rating on the App Store to show for it.

With TrapCall, you can:

Discover Who is Hiding Behind No Caller ID, Click to Get Started Today
  1. Unmask the phone number, name, address, and even a photo of who’s calling from “No Caller ID”
  2. Blacklist these unmasked numbers so that they’ll hear this message when they call: “The number that you’re trying to reach has been disconnected or is no longer in service.”
  3. Plus, we offer reverse phone number lookups, automatic spam call blocking, and even incoming call recording.


What’s the difference between “No Caller ID”, “Private Caller“, “Unknown Caller”, “Blocked Call”, “Masked Call”, etc. ?

Functionally, there is no difference between all of these terms. Traditionally different phone carrier & manufacturers have used different terminology to refer to the lack of Caller ID. All of these terms fundamentally mean the same thing, that a caller is calling you from a masked caller ID.

No Caller ID on iPhone
No Caller ID on iPhone

How does TrapCall & it’s No Caller ID Call Unmasking & Blocking work?

Setting up and using TrapCall is easy. After signing up for a TrapCall subscription, you’ll need to activate the service on your phone. This process takes less than 5 minutes, and we’ll walk you through every step. Once the service is activated, you’ll just need to decline any No Caller ID calls you receive. When you decline those calls, they’ll be forwarded to us, we’ll work our unmasking magic, and then we’ll forward them back to you with the revealed number.

Plus, TrapCall allows you to go beyond unmasking these unwanted calls.

After seeing the revealed number, along with the name, address, and photo of the caller when that information is available, you’re in control. If you want to make sure the caller can’t leave you any more voicemails, you can add their number to your blacklist. If it’s a more serious situation, you can bring that information to the police to show who’s harassing you. With TrapCall’s Ultimate Plan, you can even record the harassing calls you’re receiving for further evidence. 

With TrapCall, you’ll have the power to always know who’s calling and stop the harassment.


How do I decline a No Caller ID call on iPhone?

If your phone is locked when you receive a No Caller ID call, you’ll need to press the lock button twice to decline the call. The first press silences the call, the second press declines it. The lock button is on the right side of the phone on the iPhone 6, 6S, and 7 models, and it’s on the top of the phone for all other iPhones.

If your phone is unlocked when you receive a No Caller ID call, you’ll see the red decline button on your screen and can simply tap it to decline the call.


What if I get a call from an “Unknown” number?

Sometimes blocked calls may show up on your phone as “Unknown” rather than “No Caller ID.” If the caller is hiding their number using *67, or a similar method, TrapCall will have no trouble unmasking the blocked call. However, if the caller is calling from an international or VoIP number, it’s possible that their “Unknown” number cannot be unmasked.


Start your free 7-day TrapCall trial today, or feel free to contact our Support Team with any questions.

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