Use TrapCall The TrapCall app allows its users to: Unmask any phone number. Unmask the name, address, and photo of a caller with No Caller ID turned on. Put these numbers on a blacklist so that when they call again, they will hear a message telling them that your number has been disconnected or isn't in service.
After setting up TrapCall, when you receive a No Caller ID call, you need to decline it. After that, TrapCall redirects the number to their system, then unmasks the caller and sends you a notification with the exact number and some additional information. TrapCall works on both Android and iPhone smartphone devices.
All you have to do it decline the initial call and wait for a call back with the original caller ID totally unmasked. It's really that simple. The service works by re-directing your original call through to one of their toll-free numbers.
If you're unable to call back or uncover the number and you don't have a smartphone, you can trace the number for your carrier by dialing *57 in the United States. For this to work, you must answer the call when it comes in before you can trace it, and you must be prepared to follow up with local law enforcement.
The iPhone's Caller ID feature is what lets the person you're calling know it's you; it's what pops your name or number up on their phone's screen. To block Caller ID, change its setting.
1. Find "Show My Caller ID"
Open the Settings app on your iPhone. Scroll down and tap on Phone. Scroll down again and tap on Silence Unknown Callers. Toggle the switch to activate the Silence Unknown Callers feature.
To change Caller ID settings, from the home screen select the Settings app. Scroll to and select Phone. Select Show My Caller ID. To turn Caller ID on or off, select the Show My Caller ID switch.
iPhone: Enable or Disable Caller ID
Just follow these steps.
How to hide caller ID on iPhone
Caller ID should not be trusted because phone numbers are too easy for criminals to fake, Ofcom warns. Caller ID is no longer a safe way to protect yourself from fraudsters, the telecoms watchdog has warned. Ofcom has said the technology is easy for criminals to exploit and can not be solely relied upon to detect scams
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.
so “no caller id” would be a *67 situation then? That is indeed one method to create this. ”Not recognized” means your cellular carrier did not associate this with a phone number. “No Caller ID” means just that - the caller overtly blocked their ID from being displayed.
if you are calling another cell phone, the caller id is going to show you as what ever they have you in their address book as. for example if your number is 123-456-7890 and they have that number in their address book as "Ana", then when you call their phone, "Ana" will show up.