Dialing *57 on your phone activates the Malicious Caller Identification or Call Trace service, which, when used immediately after a harassing or threatening call, records the number for law enforcement to retrieve, helping to identify and stop unwanted calls. This is a paid service, typically requires immediate use after the call, and works best with landlines but also on some mobile carriers, logging call data for police investigation.
To trace a call from an unknown number, use star codes like *69 and *57, contact your phone company directly, or use specialist third-party apps. You can then call the unknown number back or block it. Before you use tools and services to unmask your caller, check if they've left a voicemail.
It only works if the caller hasn't intentionally blocked their information, which many scammers do. Dial *57 after a malicious phone call. If you get a call from spammers, you can report their number to the authorities through your phone company's call tracing service.
Dialing *77 activates Anonymous Call Rejection, blocking incoming calls from private or blocked numbers on landlines and some mobile services, making anonymous callers hear a message that you don't accept their calls. To turn it off, dial *87, and remember that this feature only blocks intentionally hidden numbers, not calls marked as "Unavailable" or "Out of Area," and can sometimes route to emergency services in certain areas or for specific carriers, so check with your provider.
*67 is a calling feature that allows you to hide your phone number when making calls. When you dial *67 before a phone number, your caller ID is blocked, and the person you are calling will see "Blocked," "Private," or "Unknown" on their caller ID instead of your actual phone number.
This Vertical Service Code, *82, enables calling line identification regardless of subscriber preference, dialed to unblock withheld numbers (private callers) in the U.S. on a per-call basis.
*69, a code widely available in North America, allows you to redial the last incoming call that you missed. The service is provided by most telephone service providers and operates by storing the caller's phone number, allowing you to quickly connect back to them.
*64 | All Other Callers: Block
All other calls (not otherwise specified in Call Handling settings) will be blocked.
Call Retrieve Used to retrieve a parked call. Enter *88 followed by the extension that call is parked against. If the call is parked against your own extension, press the # key.
How to block every incoming call. incoming calls to your line: *35*0000#.
*57 (or 1157) must be dialed immediately after the harassing call. and prior to receiving another call or hearing the call waiting tone. You aren't charged for unsuccessful attempts. You are billed for all successful traces, even if there is no follow-up action.
For illegal scam calls, pressing 9 can actually increase the number of calls you receive. The safest way to stop telemarketing calls legally is by leveraging your legal rights. Register on the National Do Not Call Registry and understand the TCPA and state-specific rules.
What's No Caller ID? When No Caller ID appears during incoming calls, that means the caller has deliberately blocked their information. A No Caller ID call can be legit—it may be from an organization or person who simply wants to keep their contact information private.
To block your mobile phone number on a per-call basis, dial #31# before each phone number you call. To permanently block your number use your Call Settings menu. Get step-by-step instructions for your device on how to hide your caller information.
You can uncover an unknown caller ID by using the *69 or *57 feature codes, third-party apps, or by contacting your phone service provider.
No. 1- *#9900# If you dial this code on your keypad, a window will open where you can click on 'Delete dumpstate/ logcat' to remove all junk files from your phone, making it a bit faster!
What Does ##002# Really Do? 🔐📞 ##002# instantly cancels all call forwarding on your phone — busy, unreachable, or no-answer. It's a simple way to reset settings and protect your privacy.
Call Block, otherwise known as Call Screening, is a feature that allows you to block calls from up to 10 phone numbers within your local calling area for a low monthly rate. Turn on: Press *60. If prompted, press 3 to turn the feature on.
*97 Pick up a call for another user in the same group.
Call Waiting: 43 (Various Combinations)
I reactivated the voice call waiting specifically with *#43#, and confirmed it in the iPhone's Settings > Phone > Call Waiting menu. It should be the same code for T-Mobile. On Verizon, using *43 will deactivate call forwarding, not call waiting; *42 will turn it back on.
The country calling code for New Zealand is +64. This code is a universal identifier that tells a phone network your call is destined for New Zealand. It must be dialled at the beginning of every New Zealand phone number when you're calling from another country.
You can also use *82 to unblock your number in case your call gets rejected temporarily.
The #662# spam blocker only blocks calls from phone numbers that your caller ID would recognize as “Scam Likely.” It doesn't prevent calls from anonymous or spoofed numbers and cannot block spam or scam texts.
The Central Investigation Bureau (CIB) strongly urges everyone reject incoming calls from abroad starting with +697, +698, or +66, as they are phone scams. Though +66 is Thailand's country code, if a call is made via Voice over Internet Protocol (VoIP), it should initially be suspected of being a scam.