How to Set Up a Second Phone Number on Your iPhone

Your iPhone can handle more than one phone number, and setting it up doesn’t have to be complicated. You just need to know where to start.

You can add another mobile line through your phone service provider using dual SIM, or use a second-number app to keep certain calls and texts in one place. Both let you use two numbers on the same iPhone; they just work a little differently.

Below, we’ll show you how to set up a second number on your iPhone with either option, along with a few things to know before you start.

Can You Have Two Phone Numbers on One iPhone?

Whether you can have two phone numbers on one iPhone depends on what your device supports and how you’d prefer to manage your calls and texts. Your two main options are:

• Dual SIM: If your iPhone and carrier support it, you can add a second mobile line with a physical SIM, an eSIM, or a supported combination of both. You manage both numbers through your iPhone’s built-in settings.
• Second-Number App: Certain apps give you another phone number for calls and texts without adding a new carrier line. You can manage the additional number and its conversations directly in the app.

Dual SIM is worth exploring if you want two carrier lines built into your phone, while a second-number app may be more convenient if you’d rather manage an additional number separately.

How to Set Up a Second Phone Number With Dual SIM

If you’d rather have both numbers built into your iPhone, Dual SIM is a good option. It lets you add another mobile line through your phone service provider and choose which number to use for calls, texts, and cellular data.

Step 1: Check If Your iPhone Supports Dual SIM

Before adding another line, make sure your iPhone is compatible. Most newer models support Dual SIM, although the available SIM and eSIM combinations vary by model and region. You’ll also want to check a few things:

• iPhone Model: iPhone XS, XS Max, XR, and newer models generally support Dual SIM, though the setup options differ.
• Carrier Compatibility: Your carrier needs to support the type of second line you’re adding.
• SIM Requirements: Depending on your model, you may need an eSIM, a physical SIM, or both.
• Carrier Restrictions: If you’re using two different carriers, your iPhone generally needs to be unlocked.

If you’re unsure about compatibility, check Apple’s Dual SIM guidance or ask your carrier before purchasing another plan.

Step 2: Add Your Second Mobile Line

Once you’ve confirmed compatibility and arranged a second plan with your provider, you can start setting it up.

1. Open the Settings app on your iPhone.
2. Tap Cellular or Mobile Data, depending on your region.
3. Select Add eSIM to set up an eligible second line.
4. Follow the on-screen instructions to activate your plan. Your provider may give you a QR code or another activation method.
5. Once activation is complete, check that both numbers appear in your cellular settings.

If your iPhone supports a second physical SIM, the setup may look different. Follow the instructions for your specific model and carrier.

Step 3: Label Your Phone Numbers

Your iPhone lets you label each line so you can tell them apart. For example, you might use “Personal” and “Secondary” to make things easier. These labels are especially helpful when you’re choosing which number to call or text from.

Step 4: Choose Your Default Number

Next, decide which line your iPhone should use by default. During setup, you’ll be prompted to choose your preferred number for calls and texts, along with the line you’d like to use for cellular data. You can also select a preferred line for individual contacts, which is handy if you regularly communicate with different people from different numbers.

Step 5: Test Both Lines

Before sharing your new phone number, make a quick test call and send a text from it. Have someone call or text you back, too, so you can confirm everything is working. If you plan to use the second line for cellular data, check that setting as well. Once both numbers are working as expected, you’re ready to start using them.

How to Set Up a Second Phone Number With an App

If you don’t want to add another line through your carrier, a second-number app is another option. These apps let you make calls and send texts using an additional number, with conversations managed separately from your iPhone’s regular calling and messaging apps.

The exact setup varies by provider, but the process generally follows the same set of steps.

Step 1: Download a Second-Number App

Start by exploring second-number apps like Google Voice, Burner, and Hushed. Each offers a way to get an additional phone number, but their features, pricing, and availability aren’t identical.

For example, Google Voice offers a personal calling and texting option for eligible U.S. users, while Burner and Hushed offer app-managed numbers with different plans and number-management features.

Before downloading, compare what’s included, whether you can make both calls and texts, and how long you can keep your number. Some options suit occasional use, while others make more sense if you plan to use your second number regularly.

Step 2: Create Your Account

Open the app and follow the instructions to register. Depending on the provider, you may need to verify your account or provide some basic information before choosing a number.

Step 3: Select Your New Phone Number

Once your account is ready, browse the available phone numbers. Some apps let you choose a preferred area code, although availability varies. Select your number, review any applicable subscription or payment details, and complete the activation process.

Step 4: Check Your App Settings

Before using your new number, take a look at the app’s settings. Make sure notifications are enabled so you can receive alerts for incoming calls and messages. You can also explore any available options for voicemail, blocking contacts, or managing multiple numbers.

Step 5: Make a Test Call and Send a Text

Call and text someone you know from your new number. Have them respond to confirm that you can receive calls and messages, too. Once everything works, you can start sharing your second number with whichever contacts you want.

Unlike Dual SIM, an app-based second number isn’t added to your iPhone’s built-in cellular line settings. You’ll generally open the app to manage calls and texts associated with that number.

Dual SIM vs. a Second-Number App: Which Should You Choose?

Both methods let you use two phone numbers on one iPhone, but they offer different experiences. The better choice depends on whether you want another mobile line through your carrier or prefer managing a second number in its own app.

Dual SIM makes sense if you want two mobile lines integrated into your iPhone, especially if you want to manage both through your phone’s standard settings. A second-number app may be a better fit if you want another number for online listings, appointments, or contacts you’d rather keep separate. You can manage those conversations in one place without arranging another carrier line.

Neither option is automatically better. It comes down to how often you’ll use the number, which features matter to you, and how much you’re comfortable spending.

Troubleshooting a Second Phone Number on iPhone

If your second number isn’t working after you set it up, don’t assume you need to start over. A few quick checks can usually help you narrow down what’s wrong.

Your Second Number Isn’t Showing Up

If you added a line through Dual SIM but can’t find it in your iPhone’s settings, open Settings > Cellular and check whether your new plan appears. If it’s missing, restart your phone and check for an iOS update. You may also need to contact your carrier to confirm the line was activated successfully.

If you’re using a second-number app, make sure you’re signed into the correct account and have the latest version of the app installed. If your number still isn’t showing up, contact the app’s support team.

Calls or Texts Aren’t Coming Through

Start by checking whether the issue affects calls, texts, or both. Then try the following:

• Check Your Connection: Make sure your iPhone has the connectivity required for your chosen setup.
• Review Notifications: Check that alerts are enabled for your second-number app so you don’t miss anything.
• Confirm the Number: Double-check that the person contacting you has the correct phone number.
• Check Your Line or Account Status: Make sure your second carrier line or app subscription is still active.

If you’re using Dual SIM, you can also check Settings > Cellular to confirm the correct line is turned on.

Your iPhone Keeps Using the Wrong Number

With Dual SIM, your iPhone may remember which line you previously used to contact someone. If calls or messages keep coming from your primary number, check the preferred line for that contact and update it if necessary.

For second-number apps, make sure you start the conversation in the app rather than in your iPhone’s regular Phone or Messages app.

If you’ve tried these fixes and still can’t get your second number working, contact your phone service provider or app provider. They can help determine whether the problem is related to activation, your account, or device compatibility.

Frequently Asked Questions About Second Phone Numbers on iPhone

Can I Have More Than Two Phone Numbers on My iPhone?

Depending on your iPhone model, you may be able to store multiple eSIMs, although the number of cellular lines you can use simultaneously is limited. Some second-number apps also let you manage multiple numbers within one account depending on your provider and plan.

Will I Lose My Second Number If I Get a New iPhone?

Not necessarily. If you’re using Dual SIM, transferring your second line depends on your phone service provider and whether your new iPhone supports the required SIM or eSIM setup. With a second-number app, you can generally sign in on a new compatible device to access your account, although number retention and transfer policies vary by provider.

Can I Use a Second Phone Number for iMessage and FaceTime?

A second carrier line may be eligible for iMessage and FaceTime, depending on your iPhone’s configuration and Apple’s requirements. You can review the numbers available for these services in your iPhone’s settings. Numbers provided through second-number apps generally aren’t added as separate cellular lines for Apple’s built-in iMessage and FaceTime services.

Skip the Extra Carrier Line and Get a Second Number With Burner

Adding a second phone number to your iPhone doesn't have to mean signing up for another carrier plan or changing the way you use your phone. If you want a separate number without the extra setup, Burner makes it easy.

With Burner, you can get a second phone number for calls and texts on the iPhone you already own. Keep your personal number private, manage conversations separately, and replace your Burner number whenever you need a fresh start. Burner also offers privacy features that go beyond calling and texting, including AI Voicemail, Number Lookup, and Personal Info Protection (PIP).

No second phone. No extra carrier line. Download Burner for iPhone and set up your second phone number today.