YOUR PROTECTION

Phone privacy.

Time to read: 2 minutes

At a glance

You have privacy choices, and T-Mobile has obligations, when it comes to certain data about your voice communications.

By law, data about voice calls you make can only be used or shared for certain purposes, or with your permission.

In some cases, we may be required by law to share information about the service you use. 

Your voice calls

As a telecommunications carrier, we collect and maintain information about our customers’ voice calls. We also use data about voice calling to identify offers for T-Mobile calling plans, protect against fraud, and to respond to emergencies. Because data about calls you make is sensitive personal information, Congress and the Federal Communications Commission (FCC) has created rules that we follow to protect your privacy. 

Much of the information we collect about your voice service is called customer proprietary network information or CPNI, which includes: 

  • Phone numbers called 
  • Date and time of calls  
  • Number of minutes on call 
  • Phone-related purchases like call-waiting  
  • International calling 

Your CPNI doesn’t include your name, address, or phone number.  

Your choices

Under federal law, you have the choice to approve or disapprove certain uses of your CPNI that are outside the scope of ordinary business operations, fraud prevention, or legal compliance. T-Mobile does not use or share CPNI in ways that would trigger this approval process. You also have the option to direct us to disclose your CPNI to third parties.

T-Mobile also gives you capabilities to manage who can access your CPNI. For most of our brands, if you’re the Primary Account Holder, you may designate other Authorized Users to access and manage your account information. In that case, your Authorized Users will also have access to all the CPNI associated with your account—not just the line they are using. For more information, visit the Billing Responsible Party & authorized users page.  

Our responsibilities

The FCC’s rules are complex. Some of the key requirements are that carriers: 

  • Must properly authenticate any party seeking access to CPNI. This means, for example, T-Mobile must provide mandatory password protection for online account access and require a valid photo ID for access in a retail location. We require a PIN code for any access to CPNI when you call us, and (except in Puerto Rico) we don’t release over the phone details about your calling.
  • Must notify you if your password or PIN is changed.
  • Must investigate, notify you, and notify the FCC, FBI, and U.S. Secret Service if there’s intentional unauthorized access, use, or disclosure to your CPNI.
  • Must annually file a certification with the FCC that we have processes in place designed to ensure compliance with the CPNI rules. We not only have to follow the law closely, we put our name on it.

Have questions? 

Contact us at privacy@TMobile.com.

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