How to Install and Activate an eSIM (iPhone & Android, 2026)

An eSIM is a digital SIM built into your phone, so there's no tiny plastic card to swap and nothing to lose down the back of a hotel sofa. Installing one is a quick, fully digital process that usually takes under five minutes over Wi-Fi. The catch is that the steps differ a little between iPhone and Android, and almost everyone trips over the same small detail: installing and activating are not the same thing. This guide walks through exactly what you need, the steps on both platforms, how to enter activation details manually when there's no QR code, the difference between setting things up at home and switching data on when you land, and how to fix the errors that catch people out most often.

If you have never used a digital SIM before, it helps to understand what you are actually setting up. A quick read of what is an eSIM? covers the basics, and the comparison in eSIM vs SIM vs roaming explains why a travel eSIM almost always beats turning on roaming with your home carrier.

TL;DR

• Installing an eSIM is a quick digital process, usually under five minutes on a Wi-Fi connection.
• You'll need an eSIM-compatible, carrier-unlocked phone and the QR code or activation details from your provider.
• On iPhone: Settings > Cellular > Add eSIM. On Android: Settings > Network & internet > SIMs > Add SIM.
• Install before you travel, but only activate (turn on data roaming for the travel line) once you land, so the validity period doesn't start early.
• A QR code is the easy route; manual entry uses an SM-DP+ address and an activation code instead.
• New to this? Read what is an eSIM? and check your device's compatibility first.

Before you start: what you need

Take thirty seconds to gather everything before you begin. It saves you from stopping halfway through to dig out an email or hunt for a Wi-Fi password.

• An eSIM-compatible phone. Most recent iPhones, Google Pixels, and Samsung Galaxy models qualify. If you are not sure, check the supported devices list or read does my phone support eSIM? for a quick way to confirm.
• A phone that is carrier-unlocked, meaning not locked to your home network. A locked phone will refuse the new profile, so this is worth checking first.
• A stable Wi-Fi connection. The profile downloads over the internet, and cellular data is often unreliable at this stage.
• Your QR code or activation details, usually emailed to you after purchase.
• About five minutes of quiet time, ideally before you leave home.

A small but useful habit: do this on the couch a day or two before your flight, not in the airport queue. Installing early costs nothing, and it gives you time to sort out any hiccup while you still have familiar Wi-Fi and your home carrier as a fallback.

How to install an eSIM on iPhone

On iOS, you can add an eSIM during initial setup or any time afterwards. The whole thing takes a couple of minutes.

1. Open Settings > Cellular (called Mobile Service in some regions).
2. Tap Add eSIM or Set Up Cellular.
3. Choose Use QR Code, or Enter Details Manually if you don't have one.
4. Scan the QR code your provider sent you.
5. Follow the prompts and give the line a clear label, like "Travel," so it's easy to find later.

That label matters more than it looks. Your iPhone will now show two lines, your usual number and the new travel data line, and a clear name stops you toggling the wrong one when you're tired and jet-lagged. After the profile installs, iOS asks which line to use for calls, messages, and data. Leave calls and texts on your home number for now, and you can switch the data line over once you arrive.

With iOS 26, some carriers also support transferring an eSIM between Android and iPhone, which is handy if you switch phones mid-trip. For the official reference, see Apple's eSIM setup guide.

How to install an eSIM on Android

The wording varies slightly by manufacturer, but the path is similar. Android tends to bury the option one menu deeper than iOS, so the exact wording for your brand helps.

• Most Android phones: Settings > Network & internet > SIMs > Add SIM > Set up an eSIM > scan the QR code and follow the prompts.
• Samsung Galaxy: Settings > Connections > SIM manager > Add mobile plan > Add using QR code.
• Google Pixel: Settings > Network & internet > SIMs > Add SIM > Download a SIM instead? > scan.

After the download finishes, Android will ask you to name the SIM and may ask whether you want to use it now. Name it something obvious like "Travel" and decline to switch your default data over until you are at your destination. On Samsung and Pixel, you can also choose which line handles mobile data later from the same SIM manager screen, so there's no rush to decide during install.

Installing with a QR code vs entering details manually

Most providers send a QR code because it is the fastest path: your phone reads the SM-DP+ address and activation code straight from the image, and you avoid typos. Scan it and you're done.

Manual entry exists for one common situation. If you bought the eSIM on the same phone you want to install it on, you can't scan a QR code on your own screen. In that case, choose the Enter details manually option and you'll be asked for an SM-DP+ address and an activation code. Copy them exactly as provided, with no extra spaces and no autocorrect interference. A single stray character is the usual reason a manual install fails, so paste rather than type where you can. Both routes install the same profile in the end, so pick whichever is easier with the device in your hand.

Install at home, activate when you arrive

Installing and activating are two different things, and mixing them up is the most common source of confusion. Installing puts the profile on your phone. Activating means switching the line on and letting it connect to a network, which is usually when the plan's validity clock starts ticking. That's why you want to install early but hold off on activation until you land.

Once you reach your destination:

1. Turn on the eSIM line in your settings.
2. Enable Data Roaming for that line. This sounds counterintuitive, but the eSIM connects to a local partner network, so it uses local rates, not your home carrier's roaming fees.
3. Set the eSIM as your default data line.
4. Turn off data on your home line so your phone doesn't quietly fall back to it and rack up charges.

That last step is the one people forget. Even with a travel eSIM installed and switched on, a phone left with its home line set for data can silently reconnect to it and bill you home roaming rates. Toggling home-line data off is your insurance against a nasty bill. If avoiding those fees is your main goal, the longer playbook in how to avoid roaming charges is worth a read before you go.

Managing multiple eSIM profiles

Frequent travelers often end up with several profiles installed at once, one for a recent trip to Europe, another for an upcoming visit somewhere else. That's completely fine. A modern iPhone can store many eSIMs and keep a couple active at the same time, and Android handles multiple profiles too. The key is keeping them tidy. Label each one by destination or trip rather than by carrier, delete the ones you're truly finished with, and double-check which line is set for data before you rely on it. When the labels are clear, juggling profiles is genuinely effortless. If your existing eSIM still has time on it and you just need more data, you may not need a new profile at all, see how to top up eSIM data.

Troubleshooting common issues

Most install problems come from one of a handful of causes, and the fixes are quick.

• "Unable to activate" or "Invalid QR code": make sure you're on Wi-Fi, increase screen brightness when scanning, and confirm the QR code hasn't already been used (most are single-use).
• No service after landing: enable Data Roaming for the eSIM line, toggle Airplane Mode on and off, or select the network manually in settings.
• Slow speeds: switch to a different local network in settings, or check that the correct APN is set.
• Phone won't accept the eSIM: your device may be carrier-locked, so contact your home carrier to unlock it.
• Manual entry keeps failing: re-check the SM-DP+ address and activation code for stray spaces or an autocorrected character, and try pasting instead of typing.

Still stuck after landing? Our full eSIM troubleshooting guide walks through every fix step by step. If you're still on the fence about whether a digital SIM is right for you, eSIM myths vs facts clears up the most common misconceptions.

A quick pre-trip routine

The smoothest trips start at home. A day or two before you leave, install the eSIM over Wi-Fi, label the line, leave it set to activate on arrival, and screenshot your provider's support and APN details in case you land somewhere with no signal to look them up. Two minutes of prep saves a lot of airport stress.

The bottom line

Installing an eSIM is genuinely simple once you separate the two halves: install the profile at home over Wi-Fi, then switch it on and enable data roaming for that line when you arrive. Label your lines clearly, keep your home line's data off while you travel, and you'll have local-rate data the moment you land. Ready to set yours up? Browse plans and grab your eSIM at esim70.com, and have it installed before you even pack.

Frequently asked questions

Can I install an eSIM before my trip?

Yes, and you should. Install it at home over Wi-Fi, then activate it (turn on the line and enable data roaming) when you arrive, so the validity period doesn't start early.

How long does installing an eSIM take?

Usually under five minutes on a stable Wi-Fi connection. The profile download is the slowest part, and that's still just a minute or two.

What's the difference between installing and activating?

Installing puts the eSIM profile onto your phone. Activating switches the line on and lets it connect to a network, which is typically when your plan's validity clock starts. You can install early but wait to activate.

Do I need to remove my regular SIM to use an eSIM?

No. Your phone can run your home line and the travel eSIM side by side. Just keep your home line for calls and texts, set the eSIM as your data line, and turn off data on the home line to avoid roaming charges.

What if I bought the eSIM on the same phone I want to use it on?

Use the manual entry option instead of scanning. You'll enter the SM-DP+ address and activation code from your confirmation email. Paste them exactly, with no extra spaces.

Can I keep more than one eSIM on my phone?

Yes. Modern iPhones and Android phones can store multiple profiles and keep a couple active at once. Label each one by trip or destination so you always know which line is which.

My eSIM installed but there's no signal after I land. What now?

Enable Data Roaming for the eSIM line, set it as your default data line, then toggle Airplane Mode on and off. If that doesn't work, select the network manually in settings or check the eSIM troubleshooting guide.