Add a second number
to your smartphone

Your work phone is now an app


2 numbers, 1 phone

Sideline is a dedicated business number on your smartphone. It uses your phone’s existing carrier network (not Wi-Fi) so your 2nd number is just as reliable as your 1st.

The App

Manage employee numbers

With a team account, companies can manage employee numbers through the online dashboard. Nobody has to carry two devices and landlines can retire someplace warm.

Team Solutions


Pricing at a glance


$0yep, it’s free

  • 2nd Phone Line
  • Calling
  • Texting
  • Voicemail
  • Carrier Reliability

$9.99 user / month

  • everything free, plus:
  • Manage Team Lines
  • Prioritized Support
  • Salesforce Integration
  • Auto-Attendant