The Ultimate Guide to Activate a New iPhone: Setup & Fixes

September 19, 2025Ashley Mae

Got a new iPhone? The first step to unlocking its potential is to successfully activate a new iPhone. While the process is designed to be simple, knowing the right prerequisites and solutions to common problems can ensure a smooth start. This comprehensive guide will not only show you how to activate a new iPhone step-by-step but also how to set up your cellular service, troubleshoot activation failures, and seamlessly transfer your data from an old device.

Activate A New iPhone

Part 1. Before You Begin: What You Need to Activate Your iPhone

Proper preparation is key to successfully activating a new iPhone without interruptions. First, ensure you have a stable Wi-Fi connection or an active cellular data plan with sufficient signal strength. You will need your Apple ID and password, as these are essential for accessing iCloud, the App Store, and other Apple services. If you’re transferring from an old device, create a recent backup via iCloud or iTunes beforehand. For cellular activation, have your carrier’s SIM card ready (unless using eSIM), and keep your iPhone charged or connected to power during setup. Additionally, keep your previous device nearby if using Quick Start for data transfer. Gathering these elements beforehand will streamline the process to activate your iPhone efficiently.

Part 2. How to Activate Your New iPhone?

Most of the time, activating an iPhone should be quite easy, whether it is your first Apple product or just your first iPhone. You can turn it on and follow the on-screen instructions to activate it quickly. You can check the detailed steps below to ensure you set it up right from the start.

Step 1:
Press and hold the Power button and release the button when the Apple logo appears on the iPhone screen. On new iPhone models like iPhone 12/13/14, the Power button is designed on the right side of the device. Release the button when you see Hello in many languages. Select your language for the iPhone.
Turn On iPhone Select Language
Step 2:
Choose the country or region you are in to set related information on your iPhone, such as the date, time, contacts, and more. Then you get two ways to set up this iPhone, Quick Start and Set Up Manually. If you have another iOS device nearby, you can set up your iPhone automatically with Quick Start. Otherwise, you can tap Set Up Manually to activate a new iPhone. Follow the prompts to connect it to a Wi-Fi or cellular network. It would help if you used a stable Wi-Fi or cellular network to activate a new iPhone.
Activate New iPhone Quick Start Set Up Manually

If you connect your iPhone to a cellular network, insert a SIM card you can activate with your carriers like Verizon, T-Mobile, AT&T, or Sprint. You need to use the SIM ejection pin to insert the SIM card.

Step 3:
Read the Data & Privacy prompt and tap the Continue button to set up your Face ID. You can skip this step and set it up later. During this step, you need to create a passcode for Face ID and Apple Pay. When you reach the Apps & Data interface, select your desired option to activate this iPhone. Apple lets you set up your iPhone as new, restore data from an iCloud or backup, or copy files from an Android phone.
Set iPhone Face ID Passcode
Step 4:
You need an Apple ID to access all Apple services. You can tap Forgot password or don't have an Apple ID and follow the prompts to create your Apple account. Check the Apple Terms and Conditions and tap Agree to move on.
Step 5:
Enable or disable Location Services and customize settings for Siri, Screen Time, and App Analytics based on your need. Then you can select a preferred Appearance Mode and Display Zoom. After all these operations, you can swipe up to activate your iPhone successfully and start using it.
Activate A New iPhone and Use it

You can handily activate a new iPhone and its cellular service with the steps above. Whether you use Verizon, AT&T, T-Mobile, Sprint, or another carrier, you don't need other operations to activate a phone number or carrier service. But you must ensure your SIM card is unlocked and compatible with your wireless network.

Part 3. How to Activate Phone Number and Cellular Service on a New iPhone?

To enjoy calls, texts, and mobile data on your new device, you’ll need to activate your cellular service. Whether you use a physical SIM card or a digital eSIM, the process is simple and can usually be completed in just a few steps. Below, we’ll guide you through activating both types of SIMs on your new iPhone, so you can stay connected wherever you go.

Activate a physical SIM card on a new iPhone

If your carrier provides a physical nano-SIM card, activating cellular service is straightforward. Ensure your iPhone is powered off before inserting the SIM card into the tray. Follow these steps to complete the activation and connect to your carrier’s network.

Step 1:
First, you should use a paper clip or SIM eject tool to eject the tray and put your SIM card in the tray. Insert the tray back into your iPhone. Enter the PIN if you ever set a PIN on the SIM.
Insert A Physical Sim Card to iPhone
Step 2:
Run the Settings app on your iPhone and select Cellular. You need to turn on Cellular Data to use your carrier's cellular data network. If you are using Dual SIM, you can select the new phone number under SIMs.

Activate an eSIM on a new iPhone

For a digital eSIM, activation is done wirelessly without a physical card. This method is ideal for dual-SIM functionality or when switching carriers digitally. Here’s how to set up your eSIM using a QR code or manual configuration provided by your carrier.

Method 1: During Initial iPhone Setup

Step 1:
Tap Add eSIM when promted.
Step 2:
Follow the on-screen instructions to activate your eSIM.
Step 3:
If your carrier supports it, you may transfer your number directly from your previous iPhone.

Method 2: Using a QR Code after Setup

Step 1:
Contact your carrier to request an eSIM QR code.
Step 2:
Open the Settings app on your iPhone.
Step 3:
Tap Carrier Cellular Plan Ready to Be Installed.
Step 4:
Scan the QR code provided by your carrier.
Activate eSIM on New iPhone

Part 4. Three Helpful Tips to Fix a New iPhone That Won’t Activate

Many reasons may cause the could not activate iPhone issue. If you fail to activate a new iPhone, you should first ensure you connect to a good Wi-Fi network. Also, you need to ensure that the SIM card is compatible with your current plan with your phone carrier. Then you can restart your iPhone and try setting it up again. If the new iPhone won't activate problem still exists, you can skip the setup and use the three tips below to fix it.

Activate a new iPhone using iTunes

If you’re unable to activate your iPhone wirelessly, follow these steps to activate it using iTunes.

Step 1:
Download and install the latest version of iTunes on your computer.
Step 2:
Use a USB cable to connect your new iPhone to the computer. iTunes will automatically launch, and the iPhone icon will appear once detected.
Step 3:
iTunes will automatically attempt to activate your iPhone.
Step 4:
After successful activation, select Set up as New or Restore from Backup in iTunes.
Set Up Activate A New iPhone with iTunes

Reset carrier and network settings to fix new iPhone won't activate

If you can sign in to your Apple account on the new iPhone, you should check for an iOS update in the Settings app. You can update iOS to the newest version and try activating your device again. You can also try resetting carrier and network settings to fix the new iPhone won't activate error.

Step 1:
Open Settings and tap General.
Step 2:
Scroll down and select Transfer or Reset iPhone.
Step 3:
Tap Reset and choose Reset All Settings or Reset Network Settings.
Step 4:
Enter your passcode if prompted, and confirm the reset.
Step 5:
After the iPhone restarts, try activating again.

Note: In addition, you can also select Erase All Content and Settings to factory a new iPhone and activate it again.

Reset All Settings on New iPhone

Professional way to troubleshoot new iPhone won't activate

If your new iPhone won’t activate, Mobile Device Management (MDM) restrictions from organizations or institutions may be blocking the process. To bypass this, use a specialized tool like Aiseesoft iPhone Unlocker to remove MDM profiles effortlessly and complete activation without complications.

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Step 1:
Free download, install, and launch this recommended iPhone Unlocker on your Mac or Windows computer. Choose the Bypass MDM feature and connect your new iPhone. When the connection is created, click the Start Now button to remove MDM.
Start Bypassing
Step 2:
Wait for a while and the MDM in your device will be bypassed. Then click Finish to complete the process.
Bypassed Successfully

Additionally, this iPhone Unlocker also enables you to remove your Apple ID and passcode from your iOS devices. If you can't sign in to your Apple ID, you can use it to wipe the forgotten password. You can also bypass Screen Time restrictions and iCloud activation lock using it.

Part 5. How to Transfer Data to a New iPhone?

After successfully activating your new iPhone, the next crucial step is transferring your important data. While iOS offers built-in transfer options, Aiseesoft FoneTrans provides a more flexible and comprehensive solution for moving your contacts, photos, messages, and other essential files between devices. Whether you’re switching from an older iPhone or transitioning from Android, this professional tool ensures a smooth and selective transfer process that doesn’t overwrite your existing data.

FoneTrans

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FoneTrans - Best iOS Data Manager

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  • Compatible with any Apple product like iPhone, iPad Pro/Air/mini and iPod touch with iOS.
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Step 1:
Download and launch the software on your computer.
Step 2:
Connect your old and new iPhones to the program via a USB cable.
Step 3:
Click Trust on your iPhone to enable the software to obtain the device information.
Step 4:
Choose the data you want to transfer and hit the mobile phone icon on one of the buttons above to click your new iPhone.
Click Photos

Part 6. FAQs on How to Activate a New iPhone

Do you need to call your carrier to activate a new iPhone?

Generally, you don't need to call your phone carrier to activate a new iPhone. If you purchase an iPhone from Apple, you can follow the prompts to set up and activate it. You get the specific option to select your carrier. If you buy a phone from a phone carrier like Verizon, AT&T, Sprint, or T-Mobile, you should ensure it is not locked and has a cellular network plan.

How do you convert a physical SIM to an eSIM on a new iPhone?

Tap Settings to open it on your new iPhone and select the Cellular option. Locate Convert to eSIM and tap it. Tap the Convert Cellular Plan button and choose Convert to eSIM. This operation will activate an eSIM and deactivate the previous SIM card. You can remove it from your iPhone.
You can't convert a physical SIM to an eSIM if you don't see the Convert to eSIM option. You must contact your carrier to move your phone number from the previous physical SIM to an eSIM. Then you can scan the QR code to add an eSIM to your iPhone.

How to lock a SIM card with a PIN on iPhone?

When you want to turn on the SIM PIN, you can go to Settings, choose the Cellular option, and tap SIM PIN. You should enter the correct PIN to lock SIM. You can enter the default SIM PIN from your phone carrier.

Conclusion

By following this comprehensive guide, you now have a clear understanding of how to set up a new iPhone from activation to data transfer. Whether you needed to troubleshoot activation issues, configure cellular service, or move your important files using tools like Aiseesoft FoneTrans, each step ensures your device is ready for optimal use. Remember that properly learning how to set up a new iPhone not only saves time but also helps you avoid potential technical hurdles. If you have any further questions or tips about the process, feel free to share them in the comments below.

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