How to activate an eSIM on iPhone and Android
Install the profile while you still have Wi-Fi, then switch the line on and point your data at it.
Activating an eSIM comes down to a short run of taps, but iPhone, Pixel and Galaxy each name the same settings differently. Two of the steps are easy to skip without noticing, and skipping either one leaves you holding a plan that will not load a single page. Below is the whole sequence in each manufacturer’s own published wording, plus what to do when it fails.
Activating an eSIM, in short
To activate an eSIM, connect to Wi-Fi, then scan the QR code your provider emailed you or type in the activation details by hand. Your phone downloads the eSIM profile and adds it as a second line. Switch that line on, set it as your mobile data line, and turn on data roaming.
Downloading the profile is the part that needs a working internet connection, which is why activation happens over Wi-Fi. Apple states the requirement in two separate places, including its eSIM troubleshooting article: your iPhone must be connected to a Wi-Fi network or hotspot.
What lands on the phone is an operator profile, written into a secure element that is soldered into the handset. An embedded SIM is a digital SIM built directly into your device rather than slotted into it, which is how a single device ends up holding multiple numbers. GSMA wrote the specification behind that, which is why the flow looks broadly similar whatever badge is on the back, and our page on what an eSIM is sets out what that profile replaces.
Menu wording is where the three platforms part company. Apple keeps the entry point under Cellular, Google keeps it under Network & internet, and Samsung keeps it under Connections. For the mechanics underneath, our explainer on how an eSIM works goes further than this page needs to.
What you need in front of you
Most failed activations trace back to something missing before step one rather than a wrong tap during it. Three things have to be true, and all three are checkable in under a minute.
A handset that supports eSIM, and is not carrier locked
Apple gives the floor as iPhone XS, iPhone XS Max, iPhone XR or later, and says an iPhone can manage up to eight or more eSIM profiles. Google documents eSIM from Pixel 3a onward, and flags that some of the dual SIM steps need Android 11 and up.
Samsung lists eSIM across the Galaxy S, Z Fold and Z Flip lines and selected A series handsets. Rather than hunting a spec sheet, dial *#06# and look for an EID next to the IMEI, which is the check published on eSIMply’s installation guides page.
Carrier locking matters separately. Apple is explicit that to use two different carriers, your iPhone must be unlocked, so a handset still tied to a home network can refuse a travel profile outright.
A QR code, an activation code, or a carrier app
Apple documents five routes onto a phone: eSIM Quick Transfer from another device, eSIM Carrier Activation, a QR code, a carrier link, and manual entry. Travel providers almost always use the third and the fifth, because both work without the destination operator knowing anything about you.
Keep the email. The same message normally carries a QR image for scanning and the underlying activation details for typing in, and you want both reachable when you are offline. Our page on eSIM QR codes covers what is encoded in one.
A Wi-Fi connection you can hold for a few minutes
O2 tells customers to connect to a stable Wi-Fi network before installing, and to keep the device connected until the eSIM is active. eSIMply’s own installation guides give the same advice, asking for a stable Wi-Fi or mobile data connection before departure because the install itself requires a network.
Airport Wi-Fi counts, and so does a hotspot from a travelling companion. A connection that drops halfway through leaves you with a partial download and a used code.
Why activation belongs at home, not at the gate
Most eSIM instructions describe adding a home carrier plan, where you already have service while you set it up. Travel eSIMs invert that, and the ordering problem it creates is the main reason people land with a plan and no data.
Profile download needs the connection you do not have yet
Your travel eSIM only gives you service once it is installed, and installing it requires internet. Landing in a new country with an unscanned QR code in your inbox puts you in a loop: no data to fetch the email, no email to get the data.
Airport Wi-Fi usually breaks the loop, but plenty of airports gate it behind an SMS code sent to a number you cannot receive on. Installing at home removes the question entirely.
Installing early does not mean paying early
Installing a profile and enabling the line are separate actions on all three platforms, which is what makes an early install safe. Apple splits them explicitly: adding the plan is one flow, and Turn On this Line is a second tap you make later.
Providers differ on when a plan’s validity window opens, so check your own confirmation email rather than assuming. The install step itself is the part you want done before you leave.
Save the code somewhere you can open offline
Screenshot the QR image and save the activation details to your notes app before you travel. O2 warns customers never to share a QR code and to keep it somewhere safe. A saved copy doubles as your recovery plan if the first install fails.
An inbox that needs a live connection to load will not help you at an airport gate.
Activate your eSIM in seven steps
Have the activation email open and stay connected to Wi-Fi from here to the end. Every label below is quoted from Apple, Google or Samsung support documentation rather than paraphrased, because a menu name that is nearly right sends you hunting the wrong screen.
Step 1. Get on Wi-Fi and open the activation email
Connect to a network you can stay on for a few minutes. Open the email from your provider so both the QR image and the activation details are on screen.
Scanning a QR code needs a second screen, so put the image on a laptop or print it. Your phone’s camera cannot read a code displayed on the same handset you are installing to, and it has to be in photo mode rather than video mode.
Step 2. Add the eSIM on iPhone
Open the Settings app, tap Cellular, then tap Set Up Cellular or Add eSIM. Choose Use QR Code and point the camera at the code.
When the Cellular Plan Detected notification appears, tap it, tap Continue at the bottom of the screen, then tap Add Cellular Plan. If you were sent an activation code instead of an image, choose Enter Details Manually at the same screen. Apple sets out every one of these paths on Apple’s eSIM setup page, and there is more iPhone-specific detail in our guide to eSIM on iPhone.
Step 3. Add the eSIM on Android
On a Google Pixel or another Android phone, open Settings and tap Network & internet, then SIMs, then Add SIM, then Set up an eSIM, which is the path Google publishes. Follow the prompts from there. Some of these steps need Android 11 or newer.
On a Galaxy, open Settings, tap Connections, tap SIM manager, then tap Add eSIM and choose Scan QR code. Samsung then tells you to restart the device to apply the eSIM profile, which is a step neither Apple nor Google asks for.
Galaxy labels are not uniform. Samsung’s Gulf support site still documents the same action as SIM Card Manager and Add Mobile Plan, so read your own screen rather than trusting one screenshot.
Step 4. Switch the new line on and name it
A downloaded profile sits dormant until you enable it. On iPhone, tap the line in Settings, Cellular and tap Turn On this Line, then set a Cellular Plan Label so the two lines are distinguishable in Phone, Messages and Contacts.
On a Galaxy, the switch beside each SIM in SIM manager does the same job. On a Pixel, the line appears under SIMs once setup completes. Name it after the country you are visiting, which is the convention eSIMply’s own guides use.
Step 5. Point mobile data at the travel line
On iPhone, go to Settings, Cellular, tap Cellular Data and select the travel line. Apple also offers Allow Cellular Data Switching, which lets either line carry data depending on coverage.
eSIMply advises leaving that switching option off, because with it on your home line can quietly pick up data and bill you international roaming rates. On Android, the same choice sits under Your primary SIMs, and Google states that only one SIM can be the default for data.
On a Galaxy, the equivalent control is Primary SIM inside SIM manager, which sets the default line for calls, texts and data together.
Step 6. Turn on data roaming for the travel line
On iPhone, go to Settings, Cellular, Cellular Data Options, then turn Data Roaming on. Apple’s own framing is that Data Roaming permits internet access over a cellular data network when you are in a region your carrier does not cover.
On Android the control sits under Network & internet, SIMs, where Google describes Roaming as letting your phone send data over other carriers’ networks. Turn it on for the travel line and leave it off on your home line.
Step 7. Check it before you need it
Watch the status bar for a carrier name against the new line, then load something small over mobile data with Wi-Fi switched off. Apple suggests placing a call as the equivalent check for a voice plan.
If nothing appears, work through Apple’s sequence: Airplane Mode on and off, the line off and back on in Settings, Cellular, then a restart. Apple adds a carrier settings check under Settings, General, About, in the eSIM section.
What stops an eSIM from activating
Waiting until you land to install the profile leaves you with no way to download it.
Profile download is an internet transaction. Apple requires a Wi-Fi network or hotspot for it, and repeats that requirement in its troubleshooting article. Arriving with an unscanned code means finding open airport Wi-Fi before you can start, and airport Wi-Fi that asks for an SMS verification code is useless to you.
Install at home the day before, with the line left switched off until you land. The download is the part that needs a network, and enabling the line later costs nothing.
O2 states you can only download your eSIM once using a QR code, and that the profile then locks to that device. EE says the same: one-time use, and the code disappears from the portal after a scan. If an install fails, ask for a replacement code rather than re-scanning the old one.
Adding a plan does not enable it. On iPhone you still have to tap Turn On this Line, then choose that line under Cellular Data. A profile sitting in Settings with the toggle off will show a plan name and carry no traffic at all.
When a provider asks for APN details
Some operators need an access point name entered by hand before data will flow. Apple says plainly that some carriers require you to enter your APN settings, and that you can only view or edit an APN if your carrier allows it.
On iPhone the field is at Settings, Cellular, Cellular Data Network. On Android, Google lists Access point names among the mobile network settings, describing the field as helping your carrier find the right IP address for your phone.
Two cautions from Apple’s own page. Wrong APN details can cost you data connectivity and add charges, and an iOS update resets manual APN edits back to default, so you may have to enter them again after an upgrade.
If the line activates but nothing loads
Check the three switches in order: the line is on, mobile data is pointed at it, and data roaming is enabled for it. A travel profile rides partner networks in the destination, so your phone treats the connection as roaming even though the plan is sold as local.
If all three are set and the status bar still shows no carrier, Apple’s recovery sequence is Airplane Mode on and off, the line off and on, then a restart. Samsung’s documentation asks for a restart as standard after any Galaxy eSIM install.
If the phone is locked to a carrier
Carrier locking blocks a second operator’s profile, which is why Apple states that using two different carriers needs an unlocked iPhone. eSIMply’s installation guides page raises the same point before step one.
Your home carrier is the only party who can unlock the handset, and the request usually takes days rather than minutes. That is a job for well before departure.
Menu paths on iPhone, Pixel and Galaxy
Five actions do all the work, and each platform names them differently. Rows are the action, columns are the platform, and every string below is quoted from the manufacturer’s own support documentation.
| What you are doing | iPhone (iOS) | Pixel (Android) | Galaxy (One UI) |
|---|---|---|---|
| Add the eSIM | Settings › Cellular › Set Up Cellular or Add eSIM › Use QR Code | Settings › Network & internet › SIMs › Add SIM › Set up an eSIM | Settings › Connections › SIM manager › Add eSIM › Scan QR code |
| Enter a code by hand | Add Cellular Plan › Enter Details Manually | Set up an eSIM › follow the on-screen prompts | Add eSIM › enter the activation details, then restart |
| Switch the line on | Settings › Cellular › tap the line › Turn On this Line | Settings › Network & internet › SIMs › select the eSIM | Settings › Connections › SIM manager › toggle the eSIM |
| Choose the data line | Settings › Cellular › Cellular Data › tap a line | Settings › Network & internet › SIMs › Your primary SIMs › Mobile data | Settings › Connections › SIM manager › Primary SIM |
| Turn on data roaming | Settings › Cellular › Cellular Data Options › Data Roaming | Settings › Network & internet › SIMs › Roaming | Settings › Connections › SIM manager › the eSIM › Roaming |
| Edit the APN | Settings › Cellular › Cellular Data Network | Settings › Network & internet › SIMs › Access point names | SIM manager › the eSIM › Access Point Names |
Getting a code you can install before you leave
eSIMply sells travel eSIMs, so this section is about our own product. Everything above applies whoever you buy from, and the settings do not change based on whose profile is on the phone.
What does change is how quickly you can get the code into your hands. eSIMply emails the QR code as soon as you order, which is what makes a before-you-fly install practical, and it covers more than 200 destinations. There is no ID check at purchase, and support runs on chat and email around the clock if an install stalls.
Step-by-step screens for both the QR and manual routes, on iOS and Android, sit on the installation guides page. If you are still deciding whether a travel eSIM suits your trip at all, our comparison of eSIM vs physical SIM covers that question first.
Questions people ask about eSIM activation
Most searches around eSIM activation are really one of four questions: how to do it alone, how to do it on an iPhone, why it failed, and what to do with a profile that is already installed. All four are answered below, along with the ones people ask after something has gone wrong.You do not need a shop or a phone call for a travel eSIM. Your provider emails you a QR code, you scan it on a Wi-Fi connection, and your phone downloads the eSIM profile and adds it as a second line.
After that there are three settings to check: turn the new line on, choose it as your data line, and switch on data roaming. All three live in your device settings.
Activation through a carrier app or a carrier link works the same way. Apple lists both alongside the QR code method and manual entry on its eSIM setup page.
Open the Settings app, tap Cellular, then tap Set Up Cellular or Add eSIM. Choose Use QR Code and point the camera at the code, or choose Enter Details Manually if you were sent an activation code instead.
When the Cellular Plan Detected notification appears, tap it, tap Continue at the bottom of the screen, then tap Add Cellular Plan. If your provider asks for a confirmation code, type in the number it supplied.
Those labels are Apple’s own, taken from Set up eSIM on iPhone. If the wording on your screen differs, trust your screen and check which version of iOS you are on.
Four causes account for most failures: no stable internet during the download, an activation code that has already been used, a device that is locked to a carrier, or a plan that installed but was never switched on.
Apple publishes a recovery sequence for the first case. Turn Airplane Mode on and off, open Settings and tap Cellular to check the number is listed, turn that line off and back on, then restart the device.
If it still will not install, check your carrier settings under Settings, General, About, then scroll to the eSIM section. Apple sets out the full sequence in its troubleshooting article.
An installed eSIM profile sits dormant until you enable the line. On iPhone, go to Settings, Cellular, tap the line, then tap Turn On this Line.
On a Galaxy, open Settings, Connections, SIM manager, and tap the switch beside the eSIM. On a Pixel, open Settings, Network & internet, SIMs, and select the eSIM you want to use.
Enabling the line is only half of it. You still need to point mobile data at that line and turn on data roaming before anything loads.
Almost always, yes. Downloading an eSIM profile is an internet transaction, and Apple states that your iPhone must be connected to a Wi-Fi network or hotspot for it to work, per Apple’s setup page.
O2 gives the same instruction and names the one exception: eSIM-only devices from Apple can activate without Wi-Fi in some markets. Do not count on it unless you know your handset is one of them.
In practice this means installing the eSIM at home, on hotel Wi-Fi, or on airport Wi-Fi before you fly. eSIMply’s own installation guides advise securing a stable connection prior to departure for the same reason.
No. O2 states that you can only download your eSIM once using a QR code, and that once you download it the profile is locked to that device.
EE puts it the same way for its business customers: QR codes are one-time use, and disappear from the portal once scanned. Re-scanning a code after a failed attempt will usually return an error rather than a second profile.
If an install fails partway, ask your provider for a replacement code rather than scanning the old one again. Deleting the eSIM from your phone does not put the code back into circulation.
Usually yes, and this catches people out because the plan feels local. A travel profile is issued by one operator and carried on partner networks in the destination, so your phone classes the connection as roaming.
On iPhone the switch is under Settings, Cellular, Cellular Data Options, Data Roaming, described on Apple’s cellular settings page. On Android it sits under Network & internet, SIMs, where Google lists Roaming among the mobile network settings.
Turn it on for the travel line only. Leaving it off on your home line is what stops your usual carrier quietly billing you for the same data.
On the Apple side, Apple lists iPhone XS, iPhone XS Max, iPhone XR or later as the requirement for eSIM setup, and says an iPhone can manage up to eight or more eSIM profiles.
On Android, Google documents eSIM on Pixel 3a and later, with two eSIM profiles at once from Pixel 7 onward where the carrier allows it. Samsung lists eSIM support across the Galaxy S, Z Fold and Z Flip lines and selected A series models.
A quick check beats a spec sheet. Dial *#06# and look for an EID alongside the IMEI, which is the check eSIMply publishes on its installation guides page.
No. Dual SIM is the point of an eSIM plan for travel, because your home number keeps taking calls and texts while the travel line carries data.
Apple supports one physical SIM plus one eSIM from iPhone XR and XS onward, and two eSIMs from iPhone SE (3rd generation) and iPhone 13 onward, per Use Dual SIM on iPhone. Google documents the same pattern for Pixel in its dual SIM guide.
Apple adds one condition. To use two different carriers, your iPhone must be unlocked. A carrier-locked handset will refuse a second operator’s profile.
Steps to activate eSIM plans are the same in outline on iPhones and Android, and only the menu names change. On an Android device the entry point is Network & internet, then SIMs, then Add SIM, while a Samsung Galaxy puts the same action under Connections, then SIM manager.
Google Pixel and Galaxy handsets then part company over what happens next. Samsung asks you to restart the device to apply the profile, and neither Google nor Apple does.
Device compatibility is worth settling before you buy rather than after. An eSIM compatible device returns an EID when you dial *#06#, and depending on your device the labels may differ again, so make sure your device matches the screen in front of you rather than a screenshot.
Sometimes, and it depends on your provider more than your handset. Apple’s eSIM Quick Transfer moves a line from an old device to a new iPhone without contacting the carrier, when both are on iOS 18.4 or later and the carrier supports it, per Apple’s setup page.
Travel plans are usually stricter. Because you can only download the profile once, most providers treat a move as a fresh install and have to reissue the details before you can set up your eSIM again.
Ask before you wipe the old handset. Deleting the profile first can leave you with no way to install the eSIM anywhere, on any device.
No. Some carriers support activation through a mobile app, and Apple lists that among its routes, but a travel eSIM normally installs straight from device settings with no download at all.
An app is useful after activation rather than during it. eSIMply’s optional app lets you check data usage, recharge a data plan, or add calls and texts without opening a browser.
Everything that joins you to a cellular network happens in settings. Follow the on-screen instructions your phone gives you, and treat anything demanding an install before you have service as a reason to stop.
Downloading the profile is usually a matter of seconds to a couple of minutes on a stable connection, and the settings that follow take longer than the download itself.
Samsung support pages tell Galaxy owners to restart the device to apply the eSIM profile once the download finishes, which adds a minute that Apple and Google do not ask for.
O2 says a restart is not normally needed, and advises waiting rather than retrying if an install appears to stall overnight. Contact your provider about a stalled install rather than burning a second code on it.
Where these steps come from
We read every menu label on this page on the manufacturer’s own support documentation in September 2026, and quoted it rather than paraphrasing it. Where two official pages disagree, this page shows both readings.
- iPhone paths, model requirements and the Wi-Fi rule come from Apple’s eSIM setup page, eSIM troubleshooting article, Dual SIM guide, cellular data settings guide and APN article.
- Android paths come from Google’s Pixel Phone Help: Set up a new eSIM, Connect to mobile networks and dual SIM guide. Samsung’s own US support answer on SIM cards supplied the Galaxy labels, with Samsung Gulf recorded as a second, differing reading of the same action.
- Activation-code behaviour and the Wi-Fi guidance come from carriers publishing their own policy: O2 UK and EE Business.
- Background on the underlying specification comes from GSMA.
- Real questions came from the People Also Ask box for this search and from the troubleshooting FAQs carriers publish. No forum post is quoted here, because no comment body could be retrieved.
eSIMply runs its own travel eSIM service, so one of the products mentioned on this page is ours. We have said so in the section above rather than leaving you to work it out, and none of the steps change depending on who you buy from.
We may receive commission if you buy through our links. That does not affect what this page tells you to tap.
Jamie has worked in telecommunications for more than 8 years across mobile, SMS, eSIM, apps, and adjacent technology. He now writes for eSIMply as the tech content writer, analysing the top eSIM providers and breaking down what travellers actually need to know.
While we do our best to ensure accuracy, prices and plan availability are subject to change. Last updated by Jamie Cole.
