As of 2014, the most common way to block outgoing calls using AT&T is to dial *67 on your device plus the 10-digit phone number. To hide your number on all outgoing calls, check to see if your device contains the ability. AT&T can add or remove the service free of charge, and it can be set up within just a few minutes.Know More
Go to AT&T's Device How-To Center located on their website and choose your device. Click on Device Instructions, and select Calling Options under the calling features menu.
Look through the instructions of the calling options. If there is no section for Caller ID instructions, your device may not have the ability to hide all outgoing calls. Your number can still be blocked on a call-by-call basis by dialing *67 before making a phone call.
Update the Caller ID settings according to the directions provided for your device to block all outgoing calls. This setting is effective until it is changed.
If your device is unable to hide your number on all calls, contact AT&T to add the feature to your service.
Phone calls can be blocked through service providers, phone settings and special call-blocking apps. As of 2014, some national mobile service providers offer call and text blocking, although certain providers charge a monthly fee for the service. A limit might also be placed on how many numbers can be blocked. Most providers offer the ability to control the list online or through customer service.Full Answer >
Calls to Android phones can be blocked using the free third-party application Mr. Number. Most smartphones have some sort of built-in blocking capability, but because feature sets and setup methods vary greatly from phone to phone, using a third-party app ensures familiarity no matter what phone you're using.Full Answer >
Verizon customers can block calls on home phones serviced by Verizon by subscribing to the Call Block service. Cellphone users can temporarily block calls for 90 days with the Call and Message Blocking feature.Full Answer >
To make international calls on magicJack, register with magicJack, obtain the USB device, and take the device when going outside the United States. Connect the USB device to a home phone and a computer or alternatively to a home phone and high-speed modem to make the calls.Full Answer >