How to Change Your Phone Number—and Keep Your Old One, Too

On February 16, 2025 By newsroom Topic: Technology Buyers Guide

Switching your phone number doesn’t mean you have to lose your old one! With a little planning and tools like Google Voice, you can retain access to your old number while using a new one as your primary contact. Here’s how to do it:


Steps to Change and Keep Your Number

1. Choose Your New Number

  • Use a service like Google Voice to find a new virtual number.
  • Google Voice lets you pick an unused number in your preferred area code and customize the digits.

2. Port Your New Number to Your Cellular Plan

  • Unlock the Google Voice number for porting:
  • Go to Google Voice Settings > Number Porting > Unlock Number (Fee: $3).
  • Contact your carrier: Provide the Google Voice account details and voicemail PIN to port the number into a new cellular account.
  • Activate the number: Use a virtual eSIM for faster activation, or wait for a physical SIM card.

3. Transfer Your Old Number to Google Voice

  • Keep your old number active with your current carrier during the process.
  • Port your old number into Google Voice:
  • Get the account number and PIN from your carrier.
  • In Google Voice, select Transfer Number to Google Voice and pay the $20 fee.

4. Test and Use Both Numbers

  • Calls and texts to your old number will now be forwarded to your new primary number.
  • Manage texts from your old number in the Google Voice app, while calls from that number will show a Google Voice notification.

Tips for a Smooth Transition

Timing Matters
- Ensure your current carrier plan is near renewal to avoid wasting prepaid time or incurring early termination fees.

Avoid Losing Your Number
- Never let a number go inactive or untied to a service—it can be reassigned.

Inform Your Contacts
- Proactively notify friends and family about your number change to avoid confusion or missed messages.

Prevent Scams
- Be cautious when receiving messages from new numbers claiming to be someone you know. Verify identity if unsure.


Alternative Option: Adding a New Line

  • Ask your carrier to add a second number to your existing account.
  • While you won’t have as much control over the new number, it skips the need to use Google Voice for number creation and porting.

Cost Breakdown

  • Google Voice unlock fee: $3
  • Porting your old number into Google Voice: $20
  • Total cost: $23

With this setup, you can enjoy a new primary number while maintaining your old one for calls and texts. It’s a cost-effective way to keep your connections intact without the hassle of losing your digits!


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