Caller ID Suppression Outgoing calls will be displayed as Private, Anonymous or Unavailable. To activate, dial *65, then the number you wish to call. Your caller ID will be blocked on the current call only.
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.
Activates the Do Not Disturb feature. When active, the user's phone does not ring and all calls go directly to a "busy treatment" such as Voice Messaging. Lift the telephone handset, press the speaker button, or the headset button. Dial the code *78, then #.
Auto Redial is a service that dials a number that is busy for up to 30 minutes and alerts you with a distinctive ring when the line is no longer busy. To activate Auto Redial, press *66 (1166 from a rotary phone).
*70 - Places your call on hold so you can answer another. *72 - Forward your call to another phone number. *77 - Blocks calls from anonymous/private callers.
*31# (Disable Caller ID)
If you want to keep your privacy and prevent others from knowing when you call them, you can disable caller ID by using this code.
Anonymous Call Rejection (*77) stops calls from people that use a blocking feature to keep their name or number from being displayed. When Anonymous Call Rejection is turned on, callers will hear a message telling them to hang up, turn off the blocking feature, and call again.
With the *#62# settings interrogation code, you can see if calls or texts are being forwarded to another number whenever you're unreachable. If the "Voice Call Forwarding," "Data Call Forwarding," and "SMS Call Forwarding" all say they're disabled, good. If numbers are listed, they could be put there by someone else.
Here's how to activate Call Trace: Hang up the phone after receiving a harassing call. Pick up the phone and press *57 (touch tone) or 1157 (rotary). You'll hear a confirmation tone and message will be heard If the trace is successful.
Block calls from your phone
Press *80 to turn call blocking off.
When you dial *#21#, you are, in fact, activating a feature access code that quickly tells you the status of call forwarding for your phone. It's a quick way of seeing what, in the case of this particular 'setting interrogation code,' your call forwarding settings. That's it, nothing more or less.
*93 to stop taking messages when you don't answer. *69 to dial the last caller. *89 to cancel a Call Return request.
Unaccepted callers may receive an announcement or be routed to a predetermined directory number. *65 Activation, *85 Deactivation - Calling Number Delivery - Provides the subscriber with the directory number (DN) of the calling party during the ringing cycle.
Call barring lets you block incoming or outgoing calls to and from your phone. This may be useful if you keep receiving unwanted telemarketer calls or want to avoid expensive international calls. To check if the feature is enabled on your device, dial *#33#. Use the code *33*pin# to enable call barring on your iPhone.
General Test Mode: *#0*# Display your IMEI: *#06# Check Your Call Forwarding: *#67# Get Even More Info on Call Forwarding: *#61# Check Your Available Minutes: *646#
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.
Screen incoming calls and only accept calls from certain numbers. Other callers will hear a message that you are not accepting calls at this time. To activate, dial *64.
To bar all incoming calls and texts:
Dial *35*<4-digit code># on your mobile phone and press the call key.
About Selective Call Forwarding (*63)
Selective Call Forwarding lets you program your office phone to direct incoming calls from specific phone numbers you have pre-selected to a different number - such as your cellular phone - when you're away from your office.
For a Google Pixel, dial *#06# on your phone's keyboard to get the IMEI number. For phones with a removable battery, some IMEI numbers are listed on a sticker under the battery on the back of the 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."
Access voicemail from your phone's dial pad
Dial *86.
Screen incoming calls and only accept calls from certain numbers. Other callers will hear a message that you are not accepting calls at this time. To activate, dial *64.
The next time you receive a call from a number you wish to block, end the call and dial *97. The number will automatically be added to your Selective Call Rejection list. You can block up to 100 numbers.
If you're on the phone or choose not to answer, the call will be forwarded to the destination phone number. You can still make outbound calls with this feature activated. To deactivate the No Answer/Busy Transfer feature, just dial *73.