How to Activate an eSIM on iPhone & Android (2026 Guide)

eSIM technology has made it easier than ever to stay connected while traveling. Instead of swapping tiny plastic SIM cards, you can now install a digital SIM (eSIM) directly on your phone in minutes — no store visit required.

This guide walks you through how to activate an eSIM on both iPhone and Android devices, what you'll need before you start, and a few troubleshooting tips to make sure everything runs smoothly.

If you're new to eSIMs, check out our comprehensive guide on what eSIMs are and how they work.

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What You Need Before Activating an eSIM

Before you begin, make sure you have:

• A compatible device — most modern iPhones (from XR onward) and Android flagships like Google Pixel, Samsung Galaxy, and Huawei support eSIMs.
• A stable internet connection (Wi-Fi or mobile data).
• An eSIM activation code or QR code — you'll get this from your eSIM provider (for example, AetopOne).
• Enough battery power — activation usually takes a few minutes.

Tip: You can check eSIM compatibility by visiting your phone manufacturer's official support page or by searching "[device name] eSIM supported models."

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Step-by-Step: How to Activate an eSIM on iPhone

1. Open Settings → tap Cellular (or Mobile Data).
2. Select Add eSIM or Add Cellular Plan.
3. Scan the QR code provided by your eSIM provider.
   • You can also enter activation details manually if no QR code is available.
4. Follow the on-screen prompts to confirm installation.
5. Once added, you'll see your new plan listed under Cellular Plans.
6. Turn on the new plan and toggle off your old SIM if you want to use only the eSIM.

Pro tip for dual-SIM users: Label your plans (e.g., "Home" and "Travel") to easily switch between them. iPhones allow both lines to stay active for calls, texts, and data.

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Step-by-Step: How to Activate an eSIM on Android

The process is similar but may vary slightly by brand.

Samsung (Galaxy S20 and later)

1. Go to Settings → Connections → SIM manager.
2. Tap Add eSIM → Scan QR code from service provider.
3. Confirm and activate your plan.
4. Once complete, select your preferred SIM for mobile data.

Google Pixel

1. Open Settings → Network & Internet → SIMs.
2. Tap Add SIM → Download a SIM instead?
3. Scan your QR code or input activation details.
4. Confirm installation and enable mobile data.

Most Android phones allow multiple eSIM profiles — perfect for frequent travelers who want to switch countries or networks on demand.

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Troubleshooting eSIM Activation

If your eSIM doesn't activate right away:

• Make sure you have Wi-Fi or another internet connection during setup.
• Double-check that your device is unlocked — some carrier-locked phones block third-party eSIMs.
• Restart your phone and retry the scan.
• If issues persist, contact your provider's support team (AetopOne offers 24/7 chat support within the app).

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Managing Multiple eSIMs

Modern devices let you store several eSIM profiles.

• Tourists: Add a local data plan in each destination without losing your main number.
• Business travelers: Keep personal and corporate lines separate.
• Nomads: Switch plans based on signal strength or cost.

You can toggle active profiles anytime under Cellular settings (iPhone) or SIM manager (Android).

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Activating an eSIM with AetopOne

If you're using AetopOne, setup is even simpler:

1. Download the AetopOne app (iOS or Android).
2. Select your destination or region.
3. Choose a plan and tap Activate eSIM.
4. Follow the in-app instructions — no QR code needed.
5. Start browsing instantly once installation completes.

AetopOne's platform supports over 200 destinations, with transparent pricing and global roaming included. It's the fastest way to get connected before your flight or right after landing.

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Conclusion

Activating an eSIM on iPhone or Android is straightforward — and once you've tried it, you'll never go back to physical SIM cards. With just a few taps, you can connect globally, manage plans remotely, and enjoy travel without the hassle of swapping chips.

Whether you're in Tokyo, Los Angeles, or Bali, AetopOne ensures you're always one step ahead — connected, secure, and ready to explore.

Ready to Get Started?

Now that you know how to activate an eSIM, it's time to experience the convenience yourself. AetopOne makes eSIM activation effortless with coverage in over 200 countries and instant setup.

No more SIM card hunting, no more activation delays. Browse our eSIM plans and stay connected wherever your travels take you.