It's possible to disguise your phone number or identity when you make a call.
If you own a T-Mobile cell phone and need to disguise your phone number or identity when you make a call, you want to do what's referred to as blocking a phone number. When you block a phone number on T-Mobile, your call will go through as it normally does except instead of displaying your T-Mobile number on the call receiver's caller ID, the display reads Restricted.
Instructions
1. Call the T-Mobile customer service phone number located on your phone bill. Tell them you would like to hear about T-Mobile's call blocking service. The customer service then tells you how you can block all the calls coming from your T-Mobile cell phone by adding this service to your plan. When you select this service, anytime you dial a number from your T-Mobile cell phone, the number will come up Restricted on the call receiver's caller ID.
2. Dial *67 prior to any number on your T-Mobile phone that you want to block, if you want to just block one call at a time and choose which numbers you dial are blocked. This is another way you can call someone and have it appear as a Restricted call on the other end.
3. Program your T-Mobile phone to block all calls to any one individual. Do this by tapping Add a Contact on your T-Mobile phone. Type in the name of the person you want to call. Then tap Add Phone Number. Punch in *67 then the number.
4. Tap the person's name to call him, when you have the person's number programmed into your phone with the *67 first. Every time you tap the person's name, you will be calling him from a blocked number.
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