How to Transfer Phone Number to New Phone: Step-by-Step

How to transfer phone number to new phone depends on whether you are moving a physical SIM, transferring an eSIM, or switching to another carrier.

Although the process is usually straightforward, using the wrong method or canceling your old line too early can delay the transfer or put your number at risk.

This guide explains what to prepare, which steps apply to your situation, and how to keep your existing number active throughout the move.

In This Article

1. What You Need Before You Start

Before learning how to transfer phone number to new phone, confirm that the new device supports your carrier and the required physical SIM or eSIM format.

Keep the old mobile line active and, when possible, leave the previous phone available until activation and testing are complete. You may also need:

Your carrier account login and account PIN
The phone number being moved
Access to Wi-Fi
An unlocked and compatible new phone
The current carrier’s account number and billing information
A Number Transfer PIN or other security code when changing providers
A backup of important contacts, messages, and voicemail

If the previous phone is lost, broken, or unavailable, contact the carrier for an alternative identity-verification and activation process.

2. Same Carrier vs New Carrier: Which Transfer Do You Need?

The method you use depends on your exact situation. Here is a quick breakdown of the differences:

Physical SIM (same carrier): Move the compatible active SIM, then complete carrier activation if required
eSIM (same carrier): Use a supported device-transfer feature, carrier app, QR code, or carrier activation
Switching carriers: Ask the new provider to port your active number
Lost or broken phone: Have the carrier assign the existing line to a replacement SIM or eSIM after verifying the account
Locked phone: The lock does not normally prevent number porting, but it may stop the phone from working with another carrier
Data transfer: Transfer photos, apps, contacts, and messages separately

3. Transfer Your Number with a Physical SIM

If you are staying with the same carrier and your old phone uses a physical SIM card, this is the simplest method. You are just moving a small card from one device to another.

Turn off both phones.
Remove the physical SIM from the old device.
Confirm that the new phone accepts the same SIM size and supports the carrier’s network.
Insert the card into the new phone and turn it on.
Wait for the carrier signal to appear.
Test calls, texts, and cellular data.

Some providers require an additional activation step, especially when the new phone uses a different network technology or the existing SIM is outdated.

The SIM does not contain your photos, apps, or full message history. Your carrier connects the mobile number to the SIM profile and account.

4. Transfer Your Number with eSIM

Many newer phones use eSIM instead of a physical card. This lets you proceed the how to transfer phone number to new phone process digitally, without swapping any hardware.

On iPhone (iOS 16 or later):

For a supported iPhone-to-iPhone transfer:

Connect the new iPhone to Wi-Fi.
Sign in to both iPhones with the same Apple Account.
Keep Bluetooth on and place the phones near each other.
On the new iPhone, open Settings > Cellular.
Tap Set Up Cellular or Add eSIM.
Choose an available number or tap Transfer From Nearby iPhone.
Approve the request on the previous iPhone.
Wait for the plan to activate, then test the service.

Current eSIM Quick Transfer generally requires both phones to run iOS 18.4 or later and the carrier to support the feature. If the transfer option does not appear, use the carrier’s app, activation link, or QR code, or contact customer support.

On Google Pixel

How do I transfer my phone number to a new phone? On supported devices, open:

Settings > Network & internet > SIMs > Add SIM > Transfer SIM from another device
Follow the onscreen prompts. If the transfer option is unavailable, contact the carrier to activate a new eSIM.

On Samsung Galaxy

How to transfer phone number to new phone? On supported Galaxy phones, open:

Settings > Connections > SIM manager > Add eSIM > Transfer SIM from Galaxy/Android phone
Follow the prompts on both devices. Carrier and regional support vary, so a QR code or carrier-assisted activation may still be required.

5. Transfer Your Number to a New Carrier

If you are switching to a different carrier, you need to port your number. Do not cancel your old plan before the transfer is complete. Gather your Account Number, Number Transfer PIN, and billing ZIP code from your old carrier. Give these details to your new carrier when activating your new phone. The port typically completes within a few hours.

Confirm that the number is eligible to transfer.
Keep the old line active.
Obtain the account number and any required Number Transfer PIN, account PIN, or password.
Remove port-out protection or a number lock when required.
Give the correct account name, billing address, and ZIP code to the new provider.
Wait for the new carrier to complete the port.
Test calls, texts, data, and voicemail before resetting the old phone.
Review the old account for remaining lines, balances, or services.

Many wireless ports finish the process of how to transfer phone number to new phone within several hours or one business day, but some take longer. Do not cancel the previous service before the new provider confirms that the number is active.

Note: The Number Transfer PIN is required by FCC rules (effective since 2025) to prevent unauthorized number porting. Do not factory reset or turn off your old phone until you confirm the number is working on the new device. If the port is delayed, contact your new carrier’s support team.

6. What If Your Old Phone Is Lost or Broken

You can usually keep the number even when the old device is unavailable.

Contact the existing carrier through its official website, support number, or store. After verifying that you are the account owner or an authorized user, the carrier can deactivate the former SIM and assign the line to a replacement physical SIM or eSIM.

When changing providers, you may still be able to port the number using your account credentials and transfer authorization. Additional support may be necessary if security codes are being sent only to the lost phone.

7. What Transfers With Your Number, and What Does Not

After knowing how to transfer phone number to new phone, a mental note is that transferring your phone number only moves your carrier connection. It does not move any of your personal data.

May Continue or Transfer	Does Not Move Automatically
Your existing phone number	Photos and videos
Your mobile line and plan when remaining with the same carrier	Apps and app data
Calls, texts, and cellular data after activation	Text message history
Existing account features, subject to carrier terms	Contacts not backed up or synced
The number when successfully ported to another provider	Saved voicemail messages, especially when changing carriers

Tip: Use iCloud or Quick Start for iPhone-to-iPhone data transfers, Google’s device-transfer tools for Android, and Move to iOS when changing from Android to iPhone.

8. Frequently Asked Questions

Q1. How long does it take to transfer a phone number?

A same-carrier SIM or eSIM activation may finish within minutes, but carrier support and device setup can affect the timing. A mobile-number port may take several hours, one business day, or longer when verification or account information causes a delay.

Q2. Will I lose my data when transferring my number?

The number-transfer process itself does not erase your photos, apps, contacts, or messages. However, those items do not move with the number, so back them up and complete a separate device-data transfer.

Q3. How to transfer phone number to new iPhone?

When staying with the same carrier, move the compatible physical SIM or use the supported eSIM-transfer process. When changing carriers, keep the old line active and ask the new provider to port the number using your account and security information.

Conclusion

Moving to a new device does not mean leaving your familiar number behind. Once you understand how to transfer phone number to new phone, the key is to choose the correct SIM, eSIM, or carrier-porting process and keep the old line active until the change is complete.

Test calls, texts, and mobile data before resetting the previous device, and transfer your personal files separately to make the switch as smooth as possible.

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