Overview

Porting your Sideline phone numbers to OpenPhone requires unlocking your numbers through the Sideline app. Sideline has specific eligibility requirements and fees for porting, but once unlocked, the process is straightforward. The transfer typically completes within 1-2 weeks.

Before you begin

Supported number types

  • Local US phone numbers
  • Canadian phone numbers
  • North American toll-free numbers

Requirements

  • Active Sideline subscription or grandfathered plan
  • Numbers originally ported into Sideline OR payment of $19.99 unlock fee
  • Workspace owner or admin access in OpenPhone
  • Desktop or web version of OpenPhone for submitting the port request

Sideline unlock requirements

You can port out your Sideline number if you meet one of these criteria:
  • Originally ported the number into Sideline from another provider
  • Have an active Sideline subscription that you’re currently paying for
  • Have a grandfathered subscription that you were enrolled in previously
  • Pay the one-time unlock fee of $19.99 per number
Numbers originally purchased from Sideline may require the $19.99 unlock fee. Numbers ported into Sideline from other carriers are typically eligible for free unlocking.

Steps to unlock your Sideline number

Sideline app showing the number porting unlock process
  1. Open the Sideline app on your mobile device
  2. Go to Settings in the app menu
  3. Scroll to find the Number Porting section
  4. Unlock your Sideline number by following the prompts
Once you unlock your Sideline number, you will receive:
  • PIN for account verification
  • Account number for porting
For detailed information about Sideline’s porting policies, refer to their article: Porting your number out of Sideline

Information needed from Sideline

After unlocking your number, you’ll have:
InformationDetailsSource
PINGenerated during unlock processDisplayed in Sideline app after unlocking
Account numberYour Sideline account identifierProvided when you unlock the number
Billing addressMust match what Sideline has on fileVerify in your Sideline account settings
Account statusMust be active or recently unlockedConfirmed through unlock process

Steps to port from Sideline

  1. Verify eligibility → Ensure you meet one of the unlock requirements
  2. Unlock your number → Follow the in-app process to unlock your Sideline number
  3. Record PIN and account number → Save the information provided after unlocking
  4. Gather billing details → Verify your billing address with Sideline
  5. Submit port request → Follow our step-by-step porting guide

FAQs

Need help?

Our porting specialists are here to assist you throughout the process.
  • Business plan users: Live chat available Monday-Friday, 8 AM - 5 PM PST
  • All users: Submit a support request through the help center
  • New to OpenPhone? Start your free trial today