Cell phones offer a great convenience and we wish all the services worked similarly to our landline. Depending on your mobile carrier, you may have comparable features. Usually, you don’t. There are some other options to assist when trying to block Caller ID or unwanted callers
Blocking Your Cell Phone Number from Being Sent
Like residential service, there are two ways you can block your cell number from being sent to another party. The first and more permanent solution is to request a line block from your cell carrier. This feature is offered by most carriers, sometimes for a monthly fee. If you then need to display your phone number for a specific call, you dial *82 and then the phone number.
The second way to block your phone number from displaying is on an individual call basis. This may be best when you're asking about a product or service and you don't want to provide your number. To block your phone number from being sent, press *67 and then the phone number you wish to call. One way I remember this is *OS for Off Screen.
Your number can't be blocked in all situations. For example, your cell number will be sent if you dial most emergency services. Also, if you're dialing toll-free prefixes such as 700, 800 and 900 your number is also sent. These systems rely on a technology called ANI .
