# How to move your number from Sideline to Onyx Phone

Sideline numbers. Unlock the number in the Sideline app to see its account number and PIN.

## What you'll need from Sideline

- **Account number:** Shown in the Sideline app after you unlock the number.
- **PIN:** Also shown after you unlock the number.
- **Fee:** $19.99 per number if Sideline gave you the number; usually free if you ported it into Sideline. Moving the number to Onyx Phone is free.
- **Name and address:** exactly as Sideline has them on your account. Copy them from a recent bill.
- **A recent bill:** a PDF or a photo from the last 30 days.

## Get your PIN

1. In the Sideline app, open Settings, then Number Porting, and unlock the number.

## Good to know

- Keep your Sideline subscription active until the move is done.
- Keep your Sideline service until the move is done, or the number can be lost.

## Then move it to Onyx Phone

1. Start your free trial. You get a temporary local number right away, so you can make and take calls today.
2. Forward your current number to the temporary one if you like (most landlines: dial *72 and the number), so customers reach you here during the move.
3. In Onyx Phone, open Lines, then Begin a port, enter the details above, and attach the bill. Moving a number is free on every plan.
4. Sign the letter of authorization we email you. Nothing starts until it's signed.
5. The carriers confirm a date, usually 3 to 7 business days after you sign. On port day your number replaces the temporary one, and calls you place show it.
6. The temporary number keeps ringing your line for 30 more days, so anyone you gave it to still gets through, then it's released.

Texting registration doesn't come with the number. US carriers approve each business that texts, so register in Onyx Phone when you start the move; approval usually takes one to two weeks, and calling works meanwhile.

## Help from Sideline

Sideline support. Their latest steps: https://support.sideline.com/hc/en-us/articles/214737083-Port-Out-Steps

Last checked October 24, 2026. All guides: https://www.onyxphone.io/porting.md