This guide explains how to install the Tango Extend business eSIM and use your mobile device in a dual persona (Personal + Business) configuration. Instructions are organized by device type: Apple iPhone, Samsung, and Google Pixel.
Who is this Guide For?
- All End Users who have been assigned a Tango Extend business eSIM
What You’ll Need
- Your mobile device (iPhone / Samsung / Google Pixel)
- Your Tango Extend eSIM activation details (typically a QR code or activation info from your organization)
- Stable internet connection (Wi-Fi recommended during setup)
Important Notes
- You will have two lines: your Personal (Primary) line and your Business (Extend) line.
- In several workflows, the phone will prompt you to select which line to use. Always confirm the correct line before placing calls.
Apple iPhone
eSIM Installation Recommendations (iPhone)
- On your iPhone, go to Settings > Cellular (or Mobile Data). Select Add eSIM.
- Select Use QR Code and scan the QR code provided for your Business eSIM.
- When prompted to label the line, choose a label for the Business line. Recommendation: Use Business (or your organization’s preferred label, e.g., “Extend”).
- Set your Default Voice Line to your Primary/Personal line.
- Set iMessage & FaceTime to use only your Primary/Personal line.
- Set Cellular Data to use your Primary/Personal line.
Post eSIM Installation (iPhone)
- Confirm VoLTE is enabled:
Go to Settings > Cellular (or Mobile Data) > (select Business line) > Voice & Data and ensure VoLTE is enabled. - Confirm your Business number is present:
Go to Settings > Cellular (or Mobile Data) > (select Business line) and verify your Business number is shown. If it is missing, enter your fully qualified number.
iMessage Configuration (Recommended)
While iMessage may be supported with your Business eSIM/number, it is not recommended to enable iMessage for the Business eSIM. If you previously enabled iMessage for the Business line and want to disable it:
- Go to Settings > Apps > Messages > Send & Receive.
- Ensure only your Personal identity/number is checked for receiving iMessages.
Making an Outgoing Call (iPhone)
From the Keypad
- Open the native Phone app and go to Keypad.
- Tap the line selector at the top and choose Use Extend Line (your Business line).
- Dial the number and tap Call. The called party will see your Business number.
From Recents
- Open the native Phone app and go to Recents.
- Recents shows calls from both lines. iPhone tags each entry using the first letter of the line label. Tap an entry to call it back—iPhone automatically uses the associated line for that entry.
From Contacts
- Open Contacts (within the Phone app).
- Select a contact, then tap Edit.
- Tap Preferred Line and set it to the Extend (Business) line. Tap Done.
From a Webpage or Email
Tapping a phone number link typically uses the phone’s Default Voice Line. It’s recommended your Default Voice Line stays set to Personal, so calls initiated this way may go out on your Personal line.
Workaround (Recommended):
- Long-press the number and Copy it.
- Open the Phone app > Keypad, paste the number.
- Select Extend (Business) line, then place the call.
Receiving an Inbound Call (iPhone)
- When the Extend line rings, the incoming call screen shows the first letter of the line label (example: “E” for Extend).
- After answering, the in-call screen continues showing the same line indicator for the active call.
Note: The Message function is not supported with the Extend line on iPhone.
Call Hold & Conference (iPhone)
- Call Hold: With an active call on the Extend line, press and hold the Mute button for at least 3 seconds.
- Add Call / Conference: With an active call on the Extend line, tap Add Call in the in-call screen of the native Phone app to create a conference.
Samsung
Making an Outgoing Call (Samsung)
From the Keypad
- Open the native Phone app and go to Keypad.
- Dial the number.
- Tap the line toggle button that appears at the bottom to switch to the Extend line.
- Tap Call to place the call using your Business number and calling plan.
From Recents
- Open Recents in the Phone app.
- Recents includes calls from both lines. The icon assigned to each line in SIM manager indicates which line was used.
- Tap the entry, then tap the call button. When prompted, select Extend to call back using your Business number.
From Contacts
- Open Contacts in the Phone app.
- Select a contact and tap the Info button.
- Use the line toggle on the contact details page to set calls to this contact to use the Extend line.
From a Webpage or Email
- Open the webpage/email with the number.
- Long-press the number and tap Call when the pop-up appears.
- The number is copied into the keypad digits field.
- Tap the line toggle to select Extend.
- Tap Call to place the call using your Business number and calling plan.
Receiving an Inbound Call (Samsung)
- The incoming call screen displays the icon corresponding to the ringing line (example: an office building for Business).
- After answering, the in-call screen displays the same icon indicating the active line.
Call Hold & Conference (Samsung)
- Call Hold: With an active call on the Extend line, tap Hold.
- Add Call / Conference: With an active call on the Extend line, tap Add Call to create a conference call.
Google Pixel
Making an Outgoing Call (Google Pixel)
From the Keypad
- Open the native Phone app and dial a number from Keypad.
- Press the Call button.
- Select the Extend line when prompted.
- The call will be placed using your Business calling plan and number.
From Recents
- Open Recents in the Phone app.
- Tap an entry, then tap the call button.
- Select Extend to place the call using your Business number.
From Contacts
- Open Contacts (within the Phone app).
- Select a contact.
- Tap the three dots menu.
- Select Set calling SIM.
- Select Extend to assign the Extend eSIM to this contact.
- Future calls to this contact will use the Extend line and your business calling plan/number.
From a Webpage or Email
- Open the webpage/email with the number.
- Long-press the number and tap Call when the pop-up appears.
- Tap Call (the number populates into the dialer).
- Select the Extend line from the pop-up menu to place the call using your Business number.
Receiving an Inbound Call (Google Pixel)
- The incoming call screen displays the line label (example: “Call via Extend”) indicating the call is on the Extend line.
- After answering, the in-call screen shows the Business/Extend indicator for the active line.
Google Pixel Notes
- Screen Call is supported with the Extend service.
- The Reply function is not supported with the Extend service.
Call Hold & Conference (Google Pixel)
- Call Hold: With an active call on the Extend line, tap Hold.
- Add Call / Conference: With an active call on the Extend line, tap Add Call to create a conference call.
Troubleshooting
My Business (Extend) line isn’t showing up after installation
- Confirm the eSIM is installed and enabled in your device cellular/SIM settings.
- On iPhone: verify the Business number is present under Settings > Cellular (Mobile Data) > Business line. If missing, enter the fully qualified number.
- Restart the device and re-check line visibility.
- If the issue persists, contact your organization’s support team to confirm your Extend eSIM is provisioned/active.
Calls are going out on the wrong line
- Before calling, confirm you selected Extend/Business in the dialer prompt or line toggle.
- On iPhone: calls made by tapping a number link (web/email) will typically use your Default Voice Line. Use the copy/paste method to ensure Extend is used.
- For frequent contacts, set the contact’s preferred/default calling SIM/line to Extend (steps vary by device type above).
FAQ
What is “dual persona” / “dual SIM”?
Dual persona (dual SIM) means your phone has two separate cellular lines: a Personal line and a Business (Extend) line. You can choose which line to use for calls depending on context.
Will people see my Personal number when I call from Extend?
No—when you place a call using the Extend line, the called party should see your Business number. If they see your Personal number, re-check the line selection before calling.
Can I conference calls from the Extend line?
Yes. Extend supports call hold and add-call/conferencing from the native phone in-call screen. See the Call Hold & Conference section for your device type.
Can I use iMessage for messages on IPhone?
Yes, if iMessage is configured for the Extend Number, the messaging will bypass UCaaS integration (NetSapiens).