[Skip to main content](https://www.t-mobile.com#content-main) [](https://www.t-mobile.com/advertising-solutions) [](https://www.t-mobile.com/advertising-solutions) - [Audience Insights](https://www.t-mobile.com/advertising-solutions/audience-insights) - [Media Solutions](https://www.t-mobile.com) Media Solutions - [Mobile Media](https://www.t-mobile.com/advertising-solutions/mobile-media#INTNAV=tNAV:MediaSolutions:MobileMedia) - [App Install](https://www.t-mobile.com/advertising-solutions/app-install#INTNAV=tNAV:MediaSolutions:AppInstall) - [Rideshare Advertising](https://www.t-mobile.com/advertising-solutions/rideshare-advertising#INTNAV=tNav:MediaSolutions:RideshareAdvertising) - [Retail Media](https://www.t-mobile.com) Retail Media - [Advertisers](https://www.t-mobile.com/advertising-solutions/in-store-retail-media-advertisers) - [Retailers](https://www.t-mobile.com/advertising-solutions/in-store-retail-media-retailers) - [Platforms](https://www.t-mobile.com) Platforms - [Blis](https://blis.com/us/) - [Vistar Media](https://www.vistarmedia.com/) [Contact Us](https://www.t-mobile.com/advertising-solutions/contact-us.html?INTNAV=tNav%3AContactUs) [](https://www.t-mobile.com) ## AUDIENCES - MARKETPLACE - [Create Custom Audiences](https://www.t-mobile.com/advertising-solutions/map/user-guides/audiences-marketplace/create-custom-audiences.html) - [Create Lookalike Models](https://www.t-mobile.com/advertising-solutions/map/user-guides/audiences-marketplace/create-lookalike-models.html) ## AUDIENCES - ACCESS - [Access MediaMath Segments](https://www.t-mobile.com/advertising-solutions/map/user-guides/audiences-access/access-mediamath-segments.html) - [Access Twitter Segments](https://www.t-mobile.com/advertising-solutions/map/user-guides/audiences-access/access-twitter-segments.html) - [Access Facebook Segments](https://www.t-mobile.com/advertising-solutions/map/user-guides/audiences-access/access-facebook-segments.html) - [Access Amobee (Turn) DSP Segments](https://www.t-mobile.com/advertising-solutions/map/user-guides/audiences-access/access-amobee-turn-dsp-segments.html) - [Snap Integration Setup](https://www.t-mobile.com/advertising-solutions/map/user-guides/audiences-access/snap-integration-setup.html) ## INSIGHTS - [Welcome to Insights!](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/welcome-to-insights.html) - [Insights - Starter Guide](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-starter-guide.html) - [Insight - Glossary](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-starter-guide/insights-glossary.html) - [Insight - Description of Methodology](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-starter-guide/insights-description-of-methodology.html) - [Insights - Report Guide](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-report-guide.html) - [Overview - Dashboard Report](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-report-guide/insight-overview-dashboard-report.html) - [Overview - Ownership Reports](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-report-guide/overview-ownership-reports.html) - [Overview - Installation Reports](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-report-guide/overview-installation-reports.html) - [Engagement - Engagement Reports](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-report-guide/engagement-engagement-reports.html) - [Engagement - Users Reports](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-report-guide/engagement-user-reports.html) - [Engagement - Retention Reports](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-report-guide/engagement-retention-reports.html) - [Insights - FAQs](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-faqs.html) - [Insights - Release Notes](https://www.t-mobile.com/advertising-solutions/map/user-guides/insights/insights-release-notes.html) ## MEASUREMENT - [Welcome to Measurement!](https://www.t-mobile.com/advertising-solutions/map/user-guides/measurement/welcome-to-measurement.html) - [Measurement - Starter Guide](https://www.t-mobile.com/advertising-solutions/map/user-guides/measurement/measurement-starter-guide.html) - [Measurement - Glossary](https://www.t-mobile.com/advertising-solutions/map/user-guides/measurement/measurement-starter-guide/measurement-glossary.html) - [Measurement - Report List](https://www.t-mobile.com/advertising-solutions/map/user-guides/measurement/measurement-report-list.html) - [Measurement - FAQs](https://www.t-mobile.com/advertising-solutions/map/user-guides/measurement/measurement-faqs.html) # Create Custom Audiences The Audience Marketplace offers audience data at scale. Create, view, and export custom audience segments in minutes to tailor your mobile targeting strategy with verified device-level data. Get started by creating custom audiences, learn how below. __Step 1.__ Open Advanced Builder by selecting “Advanced Builder” from left menu  __Step 2.__ Name your audience  __Step 3.__ Select your first targeting filter. Options include App Ownership, Persona, and Demographics, as well as individual data partners.  __Step 4.__ Follow on-screen prompts to add desired targeting attribute. Estimated Device Count will update as targeting filter is added.  __Step 5.__ Continue to modify your audience to fit targeting goals. You can even exclude attributes.  __Step 6.__ ll set? Click Save.  __Now what?__ Magenta Advertising Platform will calculate the size of your custom audience. This calculation process generally takes just a few minutes. Once complete the device count will change from "calculating" to the accurate number. You can click to view and analyze your segment immediately, or export your custom audience to the execution channel of your choice for targeting.  __What’s Next?__ Exporting Audiences. Find out [How To here](https://docs.magentamarketing.com/docs/how-to-export). ## Hello! Want to stay logged in? To keep your accounts safe, you'll be automatically logged out in:  Yes, stay logged in No, log me out ## Share your screen while on a call or in store __Get guided support from an Expert in real time__ - For your security, personal info, tabs, and notifications are automatically hidden. - You can stop screen sharing at any time. - Experts can only see what’s on T-Mobile.com. - Don’t use screen share while driving or in any situation where it's unsafe to focus on your screen. By clicking 'Accept and continue,' you are consenting to allow the Expert to view your screen for assisted navigation. This session may be recorded. To learn more, please visit the 
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