How to Transfer Your Phone Number to a New Phone

To transfer your phone number to a new phone, activate the new device through your carrier using the existing account, then move or activate the correct SIM or eSIM. Keep the old phone and account active until calls, texts, mobile data, voicemail, and account access work on the new phone.

The exact steps depend on your carrier, account security, phone compatibility, and whether your number uses a physical SIM or an eSIM. Do not erase the old phone at the start.

What do you need before transferring your phone number?

Before you transfer a phone number, gather the information and devices needed to verify the account. A SIM is a small removable card that connects a compatible phone to a carrier account; an eSIM performs that role digitally.

• Your carrier account username and password
• The account holder’s name and any security PIN or passcode
• The old phone, charged and able to receive verification messages if possible
• The new phone, charged and connected to Wi-Fi
• The physical SIM and SIM-removal tool, if the account uses a removable SIM
• The new phone’s IMEI and eSIM identifier, if requested during activation
• A backup of contacts, photos, messages, and authentication-app data

Check that the new phone supports the carrier’s network and is not locked to another carrier. Moving a number restores the line, but it does not automatically copy personal files or every voicemail setting.

How do you transfer a number on the same carrier?

When keeping the same carrier and account, the usual process is a device change or activation rather than a number port. Activation connects the existing line and phone number to the new device.

1. Back up the old phone and leave its cellular service active.
2. Sign in to the carrier account through its official app or website, or use the activation method supplied with the new phone.
3. Select the existing line that should move to the new device.
4. Enter or confirm the new phone’s identifying information when requested.
5. Follow the carrier’s instructions to move the physical SIM, transfer the eSIM, or activate a replacement SIM.
6. Restart the new phone if instructed, then wait for it to connect to the mobile network.

The old phone may lose cellular service once the new device activates. That is expected, but the old phone can still be needed for account verification or transferring personal data.

How do you move a physical SIM to a new phone?

A physical SIM can be moved only when the new phone accepts that SIM type, supports the carrier, and does not require a different activation method. Some carriers or accounts require a newly issued SIM instead.

1. Turn off both phones.
2. Locate the SIM tray and use the proper removal tool without forcing it into another opening.
3. Remove the SIM by its edges. Do not touch or scratch the metal contacts.
4. Place the SIM in the new phone’s tray in the matching orientation.
5. Close the tray fully, turn on the new phone, and allow it to search for service.

If service does not appear, restart the phone and check whether the SIM is seated correctly. Do not trim a SIM or force an incompatible card into the tray. Contact the carrier if the phone reports an invalid SIM, no SIM, or an activation requirement.

How do you transfer a phone number with eSIM?

An eSIM is activated electronically, so there may be no card to move. Depending on the carrier and devices, the transfer may happen during phone setup, through the carrier account, with a carrier-provided activation code, or with help from support.

1. Connect both devices to power and Wi-Fi.
2. Keep the old phone nearby and unlocked in case it receives an approval request or security code.
3. Open the new phone’s cellular setup or use the carrier’s official activation process.
4. Choose the existing line and approve the transfer when prompted.
5. If direct transfer is unavailable, request the carrier’s approved eSIM activation method.
6. Do not delete the old eSIM until the new phone has working service.

Device menus and carrier rules differ, so instructions for one phone should not be treated as universal. If you are asking “how to transfer my phone number to new phone” and no transfer option appears, confirm eSIM support with the carrier.

How do you keep your number when changing carriers?

Number porting means moving an existing phone number from one carrier to another. Keep the old carrier account and line active while the port is being processed; canceling first can prevent the number from moving.

The new carrier may request:

• The phone number being transferred
• The old carrier’s account number
• The account holder’s name and billing address exactly as recorded
• A transfer PIN, port-out PIN, or account security code
• The new phone’s identifying information

Start the port with the new carrier. Do not ask the old carrier to close the line unless the new carrier confirms that separate action is necessary. Security locks or number-transfer protection on the old account may need to be removed through the old carrier’s verified process.

What should you do if the phone-number transfer fails?

If activation fails, record the exact error message before repeating the process. Repeated attempts with incorrect account details can trigger additional security checks.

• Activation error: Confirm the selected line, account credentials, security PIN, and device identifiers.
• Locked or incompatible phone: Ask the current carrier whether the phone is eligible for use and ask the new carrier whether it supports the device.
• No calls or mobile data: Restart the phone, confirm the active SIM or eSIM is selected, and check for a carrier-settings update.
• Calls work but texts do not: Allow pending activation to finish, restart both devices, and check whether messaging remains registered to the old phone.
• Verification code never arrives: Keep the old phone powered on, try an allowed alternate verification method, or contact the carrier through a verified support channel.

Contact the carrier when the SIM is rejected, the eSIM cannot activate, the number appears on the wrong line, or service remains incomplete. The carrier can check account restrictions and activation status that the phone cannot display.

How do you confirm the phone-number transfer is complete?

Knowing how to transfer your phone number also means checking every part of the line before resetting the old device. Test the new phone while it is disconnected from Wi-Fi so mobile service is being used.

1. Place an outgoing call and ask someone to call your transferred number.
2. Send and receive both a standard text message and, if used, a multimedia message.
3. Open a page or service using mobile data.
4. Call voicemail, confirm the greeting, and verify that new messages can be received.
5. Sign in to the carrier account and confirm the correct number and new device appear on the line.
6. Check authentication apps and services that send security codes to the transferred number.

Reset the old phone only after the transfer phone number process is complete, personal data is backed up, and the new phone reliably handles calls, texts, data, voicemail, and account verification.