T-Mobile MultiLine allows employees the freedom to call and text with proper business and regulatory compliance capabilities. For more information or to get T-Mobile MultiLine, check out the T-Mobile MultiLine for Business page.

Learn how to navigate the app using the steps on this page if you're a current T-Mobile MultiLine App user. For steps on using the admin tool, check out the T-Mobile MultLline Admin Tool page.

What you need

• The latest software on your Android or iOS device
• Must be subscribed to T-Mobile MultiLine

Download & activate

Make sure to keep your invitation in a safe place; you’ll need it if you must reinstall the MultiLine app.

1. Access the invitation email and choose one of the activation methods:
   • If you’re your mobile device, select to Download and Activate.
   • On a desktop computer, scan the QR code with your phone’s camera.
   • You can also activate manually with the provided credentials.
2. Follow the onscreen instructions to complete setup, which may include:
   • Downloading and installing the app
   • Accepting permissions for the app
   • Entering a one-time PIN sent to your mobile device
   • Entering your username and password for manual activation
3. Once you’re set up, check out videos to use MultiLine for Android or iPhone.

Get additional details on finding and using your invitation. Contact your MultiLine administrator if you lose your invitation request.

Calls & voicemail

• Making calls
• Call handling (DND, Call Forward)
• Click-to-Dial numbers / conference codes
• Caller ID
• Voicemail

Messages

• Text messages (SMS)
• WhatsApp Messages

Contacts

• MutliLine Contacts
• Exchange Contacts

Settings

• Data or Minutes calling mode
• Set passcode
• Set E911 address
• Block a number

Additional help

Can’t find what you’re searching for?

• The MultiLine app user guide has additional instructions.
• The MultiLine Help Center has more guides, videos, and the latest updates
• Contact your MultiLine administrator if you need assistance with your account.