What happens if you dial *# 31?

Dialing just the asterisk symbol * by itself usually does nothing on a standard phone, but dialing * followed by specific numbers (star codes or feature codes) activates special phone features like call forwarding (*72), blocking caller ID (*67), or checking voicemail, but these codes are carrier-specific and vary. Some codes, like *69 (return last call) or *106# (check registered numbers on Safaricom), are for specific services.

What happens if you dial * 100 * 100?

Protect your account from SIM-swap fraud by dialing *100*100# to prevent your Safaricom/Airtel line from being swapped without you present.

Does *69 tell you who called?

*67 hides your number from Caller ID by displaying "Private" or "Unknown," while *69 redials the last number that called you. -*67 blocks your number to make private calls. *69 tells you who previously called you and what their number was.

What happens when I dial *002* number?

🔐📞 ##002# instantly cancels all call forwarding on your phone — busy, unreachable, or no-answer.

What happens if I dial *73?

On your phone, dialing *73 is a universal code for many U.S. carriers, especially Verizon, to turn off all call forwarding, including conditional (no answer/busy) forwarding, and you'll hear a confirmation tone or message before hanging up. It deactivates any active call forwarding settings instantly, making your phone ring normally again. 

How to Hide your Phone Number (Private number, #31#, Europe)

What does *82 do when calling?

On a phone, \*82 is a "star code" used to temporarily unblock your Caller ID for a single call, allowing your name and number to show up on the recipient's phone, even if you normally block it (like with \*67). You dial \*82, then the number you want to call (e.g., \*82-555-1212), to override your blocked status for that specific call, which is useful when calling numbers that don't accept blocked calls. 

What does ##21 do to your phone?

Dialing ##21# (or sometimes *#21#) on your phone is a USSD code used to check or deactivate unconditional call forwarding, not to detect hacking, though it's often spread as a "secret code" to check for surveillance. It tells your mobile carrier to display if all your calls and texts are being automatically redirected (forwarded) to another number, a setting potentially misused by scammers or hackers. 

What happens when you dial *35*0000?

How to block every incoming call. incoming calls to your line: *35*0000#.

What does *98 do on your phone?

*79 Do Not Disturb Deactivation Disables the Do Not Disturb Feature. *98 Group Call Pickup Enables you to pick up calls within an assigned call pickup group. The call pickup group is determined by an administrator. When you dial the call pickup code, the ringing phone in the group is answered.

What does *68 do to your phone?

Dialing *68 will disable the Caller ID for the next outbound / external call only. Selecting a line and dialing this feature code will result in a prompt on the phone display as well as an audible message: "Caller ID is BLOCKED for the next outbound call only." We hope you find this new feature code useful!

What is *77 on your phone?

Dialing *77 on your phone activates Anonymous Call Rejection, a feature that blocks incoming calls from callers who have intentionally hidden their number (Caller ID is blocked or private). When someone with a blocked number calls, they'll hear a message that you don't accept anonymous calls, and your phone won't ring; to turn it off, dial *87. 

Can you unmask a No caller ID number?

“How to call back no caller ID” is a popular search, and there's an easy answer. To call back the last private number that called you – whether you answered it or not -- simply dial *69 and it will dial it back. It will also unmask the number, if it's been blocked from caller ID.

What does *66 do to your phone?

On a landline, dialing \*66 activates Busy Call Return, which automatically redials a busy number for you until the line is free, but this feature is typically for home phones, not modern cell phones. On a cell phone, you'll usually use other codes like \*67 to hide your number for a single call, \*82 to unblock your number, or \*77 to block private calls, as *66 isn't a standard mobile function. 

What does *35 * 0000 * 16 do?

*35*0000# : Activate incoming call barring. *331*0000# : Bar all international calls. *35*0000*16# : Bar all incoming SMS. *330*0000# : Deactivate all types of barring.

What happens if you dial *# 0 *#?

Quick Tip: Test Your Samsung Phone with *#0*# Before buying a Samsung phone, use the code *#0*# to check its hardware! This secret menu lets you test the screen, buttons, speakers, sensors, and more. It's a quick way to ensure everything works perfectly and avoid issues later.

What happens when 00000 calls you?

If a 00000 number keeps calling you, the caller is hiding their real number. The call is most likely to be a scam, spam,or robocall. Caller ID spoofing: The caller conceals their actual number by falsifying their number in your caller ID.

What does *64 do on a phone?

*64 | All Other Callers: Block

‍All other calls (not otherwise specified in Call Handling settings) will be blocked.

What does *43 do?

*43# and #43# – Enable/Disable Call Waiting

It notifies you of incoming calls with a beep sound, and the caller's number or name will appear on your screen. While this feature can also be managed through your phone settings, entering *43# (to enable) or #43# (to disable) is much faster.

What is *87 used for?

The star code *87 is primarily used to disable Anonymous Call Rejection, allowing calls from private, unknown, or blocked numbers to come through, effectively turning off the feature that blocks them (which is usually turned on with *77). Think of it as the "unblock private numbers" or "accept anonymous callers" command, letting you see calls that hide their Caller ID, notes Verizon, AT&T, Ting, Broadvoice, and AltaFiber. 

What does *82 do to your phone?

Dialing *82 before a phone number on a cell phone temporarily overrides your Caller ID blocking for that single call, making your number appear on the recipient's phone instead of "Blocked" or "Private," allowing calls to lines with Anonymous Call Rejection (*77) to go through. It's the opposite of *67, which hides your number, and it's useful for reaching people who block all private calls. 

What does *21*190 do?

Use *21*190#Yes to enable call barring and #21#or #31#Yes to disable it..

What does *69 do when dialed?

Star 69 refers to "last-call return," the Calling Feature Vertical service code *69 keyed on a landline telephone set in order to return the call of the last one to ring (in Canada and the United States).

What does *#002 do to your phone?

Dialing *#002# disables all carrier-based unconditional call forwarding instructions, meaning incoming calls will stop being redirected to other numbers.

Can you tell if your phone is being monitored?

You can tell if your phone is being monitored by looking for signs like unusual battery drain, high data usage, strange sounds (clicks, echoes) during calls, the phone overheating, or unexpected behavior (sudden shutdowns, apps you didn't install). Modern phones also show a green or orange dot when the camera or mic is active, and unusual activity might trigger alerts. While one sign might be normal, several combined strongly suggest spyware or monitoring software is present, requiring security scans and software updates for removal. 

What does *62 mean?

The code *#62# is a Mobile Network Code (MNC) used on phones to check which number your calls are being forwarded to when your phone is unreachable (e.g., switched off or out of service). Dialing it reveals the destination number, often a voicemail service, to help you check for unauthorized call diversion, and you can cancel forwarding by dialing ##002#, according to sources like this Facebook post and this Reddit post.