Activating an eSIM takes less than five minutes on any compatible phone, but the exact steps differ between iPhone and Android devices. Whether you purchased a travel eSIM from a provider like Airalo or Saily, or you are converting your existing carrier plan from a physical SIM, this guide walks you through every screen tap from start to finish. We cover both QR code activation (the most common method) and app-based activation, plus troubleshooting steps for the most frequent activation failures reported by users.
Step-by-step instructions
- 1
Confirm your device supports eSIM
Before purchasing any eSIM plan, verify that your specific phone model includes eSIM hardware. On iPhone, open Settings > General > About and scroll to the "Available SIM" or "Digital SIM" section. If you see an IMEI listed under EID (Embedded Identity Document), your device supports eSIM. Every iPhone from the XS (2018) onward has this capability, and all U.S. iPhone 14 and later models are eSIM-only. On Android, the verification path varies by manufacturer. For Samsung Galaxy devices, go to Settings > Connections > SIM Manager and look for an "Add eSIM" option. On Google Pixel, navigate to Settings > Network & internet > SIMs and check for "Download a SIM instead." If neither option appears, your device likely lacks eSIM support or your carrier has disabled it through firmware restrictions (some carrier-locked devices hide the eSIM menu). You should also confirm that your phone is not carrier-locked to a network that blocks eSIM provisioning from third-party providers. Contact your carrier or check Settings > General > About > Carrier Lock (iPhone) to verify your device is unlocked. Carrier-locked phones can typically only activate eSIMs from the locking carrier.
Tip: Write down your phone's EID number (a 32-digit code found in Settings > General > About on iPhone). Some providers require the EID during purchase to pre-bind the profile to your device.
- 2
Purchase your eSIM plan and receive the QR code
Choose an eSIM provider based on your destination, data needs, and budget. Most providers sell plans through their mobile app or website. After completing the purchase, you will receive your eSIM activation credentials in one of three formats: a QR code delivered via email or shown in the provider's app, a manual activation code (a long alphanumeric string starting with LPA:1$), or a direct in-app installation button that handles everything automatically. For travel eSIMs, the purchase typically takes under two minutes and requires only an email address and payment method. Prices range from $4.50 for 1GB plans in popular destinations to $50 or more for unlimited data regional plans covering 30+ countries. After purchase, do not scan the QR code yet if you are not ready to install. Most QR codes are single-use, meaning once scanned and the profile is downloaded, the QR code becomes invalid. If you scan it and then delete the profile, you may need to contact the provider for a replacement code. Save the email containing your QR code somewhere accessible, and keep a screenshot as a backup in case you lose the email.
Tip: Purchase and install your travel e-sim at home over Wi-Fi before your trip. You will need an active internet connection to download the profile, and airport Wi-Fi can be unreliable or require local phone verification to access.
- 3
Scan the QR code on iPhone
Open Settings > Cellular > Add eSIM (or "Add Cellular Plan" on older iOS versions). On iPhones running iOS 17.4 or later, you may see the option "Use QR Code" at the bottom of the screen after tapping "Add eSIM." Point your camera at the QR code displayed on another screen (your laptop, a printed email, or another phone). The phone detects the QR code automatically and begins downloading the carrier profile from the provider's SM-DP+ server. The download is small (typically 50KB to 200KB) and completes in 15 to 30 seconds on a stable Wi-Fi connection. After the download finishes, iOS prompts you to configure the new plan. You will see options for labeling the line ("Travel," "Business," "Personal," or a custom name). Next, choose your default line for outgoing calls, iMessage, FaceTime, and cellular data. For travel eSIMs, set the new eSIM as your cellular data line while keeping your primary number as the default for calls and messages. iOS then asks whether to enable "Allow Cellular Data Switching," which lets your phone use data from either line when the selected data line has poor signal. For travel eSIMs, it is generally best to leave this toggle off to avoid unexpected roaming charges on your home plan. Tap "Done" or "Finish" to complete the setup.
Tip: If your camera will not scan the QR code, tap "Enter Details Manually" and type the SM-DP+ address and activation code from your provider's email. The address typically looks like: LPA:1$smdp.provider.com$ACTIVATIONCODE.
- 4
Scan the QR code on Android
The path to eSIM activation on Android varies slightly between manufacturers, but the general flow is consistent. On stock Android and Google Pixel devices, go to Settings > Network & internet > SIMs > tap the "+" icon or "Download a SIM instead." On Samsung, navigate to Settings > Connections > SIM Manager > Add eSIM. On OnePlus, go to Settings > Mobile Network > tap "+" next to SIM info. After reaching the eSIM setup screen, select "Scan QR code" and point your camera at the QR code. Android downloads the profile and displays a confirmation screen showing the carrier name, plan type, and a prompt to activate the profile. Tap "Confirm" or "Activate" to install the profile onto your eUICC. Android then asks you to configure the new SIM. You can set a name for the line, choose which SIM handles calls, texts, and data, and configure fallback behavior. For a data-only travel eSIM, designate it as your mobile data SIM while keeping your existing SIM for calls and SMS. One important Android-specific step: after activation, navigate to the eSIM's settings (Settings > Network & internet > SIMs > [your new eSIM]) and verify that "Mobile data" is toggled on and "Data roaming" is enabled. Many travel eSIM providers route data through roaming agreements, so leaving data roaming off will block your connection even though you have a valid plan. Also check whether the provider requires a custom APN (Access Point Name). Most modern travel eSIM providers configure the APN automatically, but some smaller carriers require manual entry.
Tip: Samsung devices may require a restart after e-sim installation before the new profile appears in SIM Manager. If the profile downloads successfully but does not show as active, restart your phone.
- 5
Verify activation and test your connection
After completing the installation steps, verify that the eSIM is working properly. On iPhone, go to Settings > Cellular and confirm that your new eSIM line appears with the label you assigned. The status should show the carrier name or "Roaming" with signal bars. Open Safari and load any webpage to confirm data connectivity. On Android, go to Settings > Network & internet > SIMs and verify the new profile shows as active with a connected carrier name. Open Chrome and load a webpage to test. If you are activating a travel eSIM before your trip, the connection will not register on a foreign network until you arrive at your destination. However, you can still verify that the profile downloaded correctly by checking that it appears in your SIM settings with the provider's name. Some providers (Airalo, for example) also show activation status in their mobile app. Run a quick speed test using speedtest.net or the Ookla Speedtest app to benchmark your connection. Typical travel eSIM speeds range from 5Mbps to 100Mbps+ depending on the local carrier, network generation (4G vs. 5G), and congestion levels. If speeds seem unusually slow (under 1Mbps), the network may be throttling due to incorrect APN settings or a plan-level speed cap. Check your provider's documentation for expected speed ranges in your destination.
Tip: Take a screenshot of your eSIM settings screen showing the active profile. If you need to contact the provider's support team later, this screenshot speeds up troubleshooting significantly.
- 6
Configure data line preferences and roaming settings
With the eSIM active, fine-tune your device settings to avoid unexpected charges and optimize performance. On iPhone, go to Settings > Cellular and tap "Cellular Data" to select which line your phone uses for internet. Choose your travel eSIM for data and your home SIM for calls/texts. Disable "Allow Cellular Data Switching" to prevent your phone from falling back to your home carrier's expensive roaming data when the travel eSIM signal dips. Still on iPhone, go to Settings > Cellular > [your home SIM] > and toggle off "Data Roaming" for your primary line. This ensures your home plan never incurs roaming charges. Leave "Data Roaming" enabled on your travel eSIM line since most travel eSIMs route data through international roaming agreements by design. On Android (Samsung), go to Settings > Connections > SIM Manager > Data and select your travel eSIM. Under Mobile networks for your home SIM, disable "Data roaming." Under Mobile networks for your travel eSIM, enable "Data roaming." For both platforms, consider turning off automatic app updates and iCloud/Google backups while on your travel eSIM to conserve data. A single iOS backup can consume 2GB to 5GB, which would exhaust most travel eSIM plans in minutes. Go to Settings > App Store > App Updates (iPhone) or Google Play > Settings > Auto-update apps > Over Wi-Fi only (Android) to prevent background data drain. If your travel eSIM includes a phone number, note that incoming calls to that number may work differently depending on the provider. Most data-only travel eSIMs do not support voice calls at all, while some include VoIP calling through the provider's app.
What Is the Difference Between QR Code and App-Based Activation?
eSIM providers deliver activation credentials through two primary methods, and the one you use depends on the provider and your preference. QR code activation is the universal standard. You receive a QR code via email after purchase, then scan it through your phone's native SIM settings menu.
This method works on every eSIM-capable device regardless of operating system, does not require installing any third-party app, and follows the GSMA's standard provisioning flow. The QR code encodes the SM-DP+ server address and a unique activation token, which your phone uses to pull the carrier profile. App-based activation is offered by providers like Airalo, Holafly, and Saily through their dedicated iOS and Android apps.
After purchasing a plan within the app, you tap "Install" and the app communicates with your phone's eSIM settings programmatically. On iOS, this uses Apple's Carrier Bundle API; on Android, it uses the LPA (Local Profile Assistant) framework. App-based installation is slightly more streamlined because you skip the camera-scanning step, and the app can pre-fill labels and settings.
Some apps also provide installation status tracking, showing you whether the profile downloaded, installed, and activated successfully. There is a third method used by some carriers: direct carrier activation. ) may push the eSIM profile to your device automatically after you request the conversion through their app or website.
Apple also supports eSIM Carrier Activation and eSIM Quick Transfer, which let you transfer an existing eSIM profile between two iPhones held near each other using Bluetooth. In terms of reliability, all methods have comparable success rates. QR code activation has a slight edge in universality since it works across all devices and does not depend on an app being compatible with your OS version.
What Should You Do If eSIM Activation Fails?
Activation failures happen to roughly 5% to 8% of eSIM installations based on aggregated support data from major providers. The good news: almost every failure has a straightforward fix. " This typically means your phone could not reach the SM-DP+ server.
Verify that you have a stable internet connection (Wi-Fi is preferred over cellular for the initial download). Try switching to a different Wi-Fi network, or use a mobile hotspot from another device. If the download started but stalled, restart your phone and re-scan the QR code.
" Each QR code is single-use. If you previously scanned it (even if the installation appeared to fail), the code may have been consumed on the server side. Check your phone's SIM settings to see if the profile actually downloaded but failed to activate.
If the profile is there, try toggling it off and on. If the profile is not there and the QR code is rejected, contact your provider for a replacement code; most providers issue replacements within minutes via live chat. "No service" or "Searching" after activation usually indicates a network registration problem.
First, toggle Airplane Mode on for 10 seconds, then off. This forces the phone to re-register on the network. If that fails, go to the eSIM's network settings and manually select a carrier instead of relying on automatic selection.
Some destinations have multiple partner networks, and the automatic selector may pick one that is congested or incompatible. For Android-specific failures, check the APN settings. Go to Settings > Network & internet > SIMs > [your eSIM] > Access Point Names and verify the APN matches what your provider specifies in their setup documentation.
An incorrect or missing APN is the number one cause of "connected but no data" issues on Android. If you see an "eSIM not supported" error on a device that should support eSIM, check whether your phone has the latest OS update installed. Apple and Google occasionally ship eSIM bug fixes in point releases.
Also verify that your device is carrier-unlocked; some locked devices restrict eSIM provisioning from third-party providers.
How Do You Manage Multiple eSIM Profiles on One Phone?
Modern smartphones can store between five and eight eSIM profiles on the eUICC chip, making it practical to maintain profiles for different carriers, countries, or use cases. Managing them effectively requires understanding how your phone handles active versus stored profiles. On iPhone, go to Settings > Cellular to see all installed eSIM profiles and your physical SIM (if applicable).
Each line is listed with its label, carrier name, and on/off toggle. You can have two lines active simultaneously (two eSIMs, or one eSIM plus one physical SIM). Stored but inactive profiles remain on the chip and can be activated in seconds by toggling them on.
" Note that deleting a travel eSIM profile is permanent; you will need a new QR code to reinstall it. On Samsung Galaxy, open Settings > Connections > SIM Manager. All installed profiles appear here with toggles for calls, texts, and data.
" On Google Pixel, go to Settings > Network & internet > SIMs to manage profiles. Pixel devices show a clear visual indicator of which SIM is handling data, with a "Use for data" toggle on each profile. For frequent travelers, a practical management strategy is to keep your home carrier as a permanent eSIM profile and install destination-specific travel eSIMs as needed.
After returning home, you can either delete the travel profile to free up a slot or leave it installed for future trips to the same country (though the data plan itself will have expired). Label your profiles clearly ("Japan Travel," "UK Data," "Home T-Mobile") so you can identify them at a glance. If you hit your device's storage limit and need to add a new profile, delete the oldest travel eSIM you no longer plan to use.
Frequently asked questions
Do I need Wi-Fi to activate an eSIM?
You need an active internet connection to download the eSIM profile, but it does not have to be Wi-Fi. If you have cellular data on an existing SIM, you can use that connection to download the new eSIM profile. However, Wi-Fi is recommended because it provides a more stable connection. The profile download is small (50KB to 200KB), so even a slow Wi-Fi network is sufficient.
Can I activate my eSIM before traveling?
Yes, and you should. Most travel eSIM providers allow you to download and install the profile immediately after purchase, even if you are not yet in the destination country. The eSIM will not connect to the foreign network until you arrive, but having it pre-installed means you get connectivity the moment you land. Airalo profiles are valid from first use, not from download, so pre-installing does not waste any of your plan's validity period.
How long does eSIM activation take?
The entire process from scanning the QR code to having a working data connection typically takes 2 to 5 minutes. The profile download itself takes 15 to 30 seconds. Network registration (where your phone connects to the carrier) takes an additional 30 seconds to 5 minutes depending on the carrier and destination. In rare cases involving older network infrastructure, registration can take up to 15 minutes.
Will activating an eSIM deactivate my physical SIM?
No. On phones with both a physical SIM slot and eSIM support, both lines operate simultaneously through Dual SIM Dual Standby (DSDS). Your physical SIM continues to work normally for calls, texts, and data. You simply choose which line handles each function in your phone's settings. On eSIM-only devices like U.S. iPhone 14 and later, you can run two eSIM lines concurrently.
What happens if I delete my eSIM profile by accident?
If you delete a travel eSIM profile, the data plan associated with it becomes inaccessible from your device. Contact your provider's support team to request a new QR code. Providers like Airalo, Saily, and Nomad typically reissue QR codes within minutes through their app or live chat. For carrier eSIMs (your primary phone plan), your carrier can reprovision the profile remotely, though this may take up to 24 hours with some operators.
Why does my eSIM say 'Carrier could not be contacted'?
This error means your phone failed to reach the carrier's SM-DP+ provisioning server during profile download. Switch to a different Wi-Fi network or use a mobile hotspot, then retry. The error also appears when the QR code has already been consumed by a previous scan attempt. Check Settings > Cellular to see if the profile downloaded silently. If it did, toggle the line off and back on. Contact your provider for a replacement code if the profile is absent.
How do I activate an eSIM manually without scanning a QR code?
On iPhone, go to Settings > Cellular > Add eSIM, then tap 'Enter Details Manually' at the bottom of the screen. Type the SM-DP+ server address and the activation code exactly as they appear in your provider's confirmation email. The code starts with LPA:1$ followed by the server address, then a dollar sign, then the activation token. On Android, look for a 'Use activation code' option on the Add eSIM screen. Manual entry works on all eSIM-capable devices and takes the same 15 to 30 seconds as QR scanning.
Can I activate an eSIM on a carrier-locked phone?
Carrier-locked phones can activate eSIM plans only from the locking carrier, not from third-party travel eSIM providers like Airalo or Saily. If you try to install a third-party eSIM on a locked device, the activation will fail with an 'Unable to add cellular plan' error. Contact your carrier to unlock the device first. In the US, T-Mobile and AT&T process unlock requests within 2 business days for eligible devices with at least 60 days of active service. Verizon unlocks postpaid devices automatically after full payment.
Why is my eSIM showing 'No Service' even though activation completed successfully?
This usually means the profile downloaded correctly but network registration has not completed. Toggle Airplane Mode on for 30 seconds, then off. If 'No Service' continues after 3 minutes, go to Settings > Cellular > (your eSIM) > Network Selection and switch from Automatic to Manual. Select an available carrier from the list and wait 30 seconds before switching back to Automatic. For travel eSIMs installed before your trip, 'No Service' is expected until you physically arrive in the destination country and the phone can register on a local partner network.
Does activating a new eSIM cancel my existing plan?
No. Adding an eSIM does not cancel or affect any existing SIM on your device. Your physical SIM plan and any previously installed eSIM profiles continue working independently. Each line operates on its own carrier contract. You simply gain a second active line. The only way to cancel a plan is to contact the carrier directly or let a prepaid plan expire without renewal. Deleting the eSIM profile from your phone's settings removes the line from the device but does not terminate the account or request a refund.
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