Yes, you may port your Team number out of Sideline.
From the app:
- Sideline 'Settings'
- Scroll and tap 'Support' (iOS devices) or 'Get Help' (Android devices)
- Tap 'Port-Out Number'
- Tap the 'Port Out' button to continue with port
For more information on porting your number out of Sideline, please visit 'What is Porting Out?'
If you have any further questions, please submit a request.