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FAQ

Installing

Getting the profile onto your phone, by QR code or by typing the details in.

Installing

Installing an eSIM means downloading a profile from the provider's server into the chip inside your phone. Nothing is inserted, and no app is involved. Once you hold on to the idea that it is a download, most of the rest explains itself: why you need internet to install, why the code works once, and why a profile that has already downloaded does not move between handsets easily.

What follows is the sequence that fits most handsets, with a note wherever manufacturers diverge. Android menu paths differ considerably between makers and shift between OS versions, so the wording below describes what to look for rather than naming a fixed menu that would be wrong on some phones no matter what.

Install at home on Wi-Fi you trust, and activate on arrival. That order is the safe one, because installing needs a connection and activating does not.
Installing

Installing and activating are two different things

Installing puts the profile on the phone: it happens once and requires internet. Activating is letting that profile attach to a live network at the destination, and for many plans it is the moment the validity begins counting. The two can happen at different times, and they should.

Confusing them causes the two most common failures. One: leaving the install until arrival and discovering there is no connection with which to download it. Two: installing and then leaving the profile's data roaming on, so the validity clock starts before departure or during a stopover.

What you need before you start

Gather these four before touching anything. If one is missing, fix that first: stalling partway through an install is a great deal harder to recover from than preparing properly.

What you needWhere it comes fromWhat happens without it
A handset that supports eSIM and is not carrier-lockedThe phone's own settings, or whoever sold you the phoneThe phone refuses the profile, or offers no menu to add one
A connection while installingWi-Fi, or data from your own home SIMThe profile cannot download and the install fails
The QR code, or the details to type inThe confirmation email and your order pageNothing tells the phone which profile to fetch, or from where
Ten unhurried minutesYour own planning — before travel day, not at the check-in deskRushing ends in the wrong profile chosen or a step skipped

Four things to have in hand before the install begins

Installing by scanning the QR code

This is the easiest route when you have a second screen — the QR open on a computer, scanned with the phone that will hold the profile. The sequence below is written generically for both iPhone and Android; the exact menu wording varies with the maker and the OS version.

  1. 1Open the QR on a second screenOpen the confirmation email or the order page on a computer or tablet. With only one screen, use the manual method in the next section instead.
  2. 2Open the phone's network or SIM settingsOn an iPhone, look for the cellular or mobile section. On Android, look for connections, networks, or SIM management; the position differs by brand.
  3. 3Choose the option to add an eSIM or a mobile planThe wording varies: add eSIM on some, add a downloaded SIM on others, and on a few it sits one level down inside SIM management.
  4. 4Scan the code and let the download finishDo not lock the screen or switch apps while it runs. On a slow connection it can take the better part of a minute, and backing out midway may mean starting over.
  5. 5Give the profile a name you will recogniseCountry plus month works. The phone asks right after the install, and a good name here saves confusion when you switch lines later.
  6. 6Decide what the line is for, then leave its roaming offSet it as the data line, but keep its data roaming switched off until you arrive, so the validity clock does not start early.
Installing

Installing without a QR code

Every profile also ships with details you can type: an SM-DP+ address and an activation code. You need this when the order page is open on the very phone you are installing to, since there is no second screen to scan. It also rescues you when the camera plays up or a printed QR is too blurred to read.

On an iPhone

Inside the add-eSIM flow there is an option to enter the details by hand instead of scanning. Choose it, put the SM-DP+ address in the server field and the activation code in the code field. Some providers also supply a confirmation code; if you were not given one, leave that blank. The option's position moves between OS versions — if it is not visible at the top, scroll to the bottom of the screen.

On Android

The idea is the same, but the labels differ sharply between makers. Usually, once you are on the scan screen there is a small link along the lines of need help or enter code manually; tap that and type in the address and the code. Some brands put it at the bottom of the scanner, others behind a three-dot menu. If you cannot find it, use the settings search box most phones have and search for eSIM.

Type the SM-DP+ address and the activation code exactly as given: no added spaces, no changed capitalisation, and watch for autocorrect. Copying and pasting straight from the order page is safer than typing.

Every manufacturer designs its own settings app and rewords it at will with each OS update. Instructions that name an exact menu therefore go stale quickly and are wrong somewhere no matter when they were written. The durable approach is to remember what you are looking for: the section about SIMs or networks, and within it a phrase meaning add a line by download.

When it truly will not surface, use the search field in the settings app that most phones now have: type eSIM, or SIM, and look at the results. That sidesteps the whole question of menu structure, and it is usually quicker than tapping through page by page.

Why installing needs a connection

Because the profile is not inside the QR code. The code is a signpost carrying a server address and a token; the phone has to reach that server to pull the real profile down. That is why scanning and typing the details need a connection alike — there is no offline route.

Wi-Fi or your own home SIM's data both work. If you must install abroad with nothing yet connected, airport, hotel or café Wi-Fi will do — but keep that as the last resort, because an install over an unstable public network can fail partway, and some codes allow only a limited number of attempts.

Installing

One-time codes, and what deleting the profile costs

As a rule the activation code installs once. After the profile downloads, the same code will not install on another handset. That is not a seller's inconvenience but the mechanism that stops one plan being used on several phones at the same time.

So deleting a profile is hard to undo. Some providers can reissue; some cannot, because the profile is already bound to a device. For plans we sell, contact us with the order number: we check with the supplier and tell you honestly whether a reissue is possible, before you decide to buy again.

Do not delete a profile as a troubleshooting step. Deleting is not a fix; it discards something you may not get back. Work through the other checks first, and ask us before removing anything.

One profile, one device

A profile serves one handset. Two people travelling together need two profiles, or one phone sharing by hotspot — after checking that the plan permits sharing, which not all do and which the plan page states.

The follow-up question is usually whether the profile can move to a new phone mid-trip. That depends on the upstream provider and on both handsets: some phones have a transfer function, some cases need the provider to reissue, and some cannot be done at all. If you know a device change is coming, ask before buying rather than after installing.

Naming profiles and switching lines without mistakes

Once several profiles live on a phone, the default names blur together to anyone in a hurry. Rename each one at the moment it installs, with the country and the month, and you will never have to guess which line still has data on it.

Switching happens in the cellular settings, where the data line and the line for calls and messages are chosen separately. The setup most travellers want is the eSIM carrying data, the home SIM still taking calls, and the home SIM's data roaming off for the entire trip.

What you wantHow to set itWhat to watch
Data from the eSIM onlySet the eSIM as the data line and switch off data roaming on the home SIMTurn off any automatic data switching, or the phone may drift back
Still receive calls on your usual numberKeep the home SIM enabled for voice and SMS with its data offAnswering while roaming can be charged by your own operator
Share the connection with another deviceTurn on the hotspot on the phone holding the eSIM, once the plan allows itThat handset's battery drains much faster; carry a power bank
Keep a profile for a future tripDisable the profile rather than deleting itDeleting is usually irreversible; disabling never is

Matching the line settings to what you actually want on the trip

The installation window after purchase

Most plans set a period after purchase within which the profile must be installed and started. The plan page states it, and it matters more than people assume: past that point the profile can expire even though it never connected once. Buying months ahead because the price looked good therefore carries a risk worth weighing.

The safe practice is to buy reasonably close to departure and install as soon as it arrives, leaving that profile's data roaming off. That keeps you comfortably inside the window without starting the validity clock at the same time.

The post-install checklist

Spend two minutes on this straight after installing, while you are still at home and everything is easy to change. Each line takes seconds now and becomes a problem in an arrivals hall.

  • The profile appears in the phone's list of lines
  • It is renamed with the country and month
  • Data roaming on the travel profile is still off
  • Data roaming on the home SIM is switched off
  • Automatic data switching is off, where the phone offers it
  • SM-DP+ address, activation code and order number saved for offline access
  • The QR image is out of any shared photo library
  • You know how to reach us if nothing connects on arrival
If a step will not budge, message us on LINE at https://lin.ee/skDPoNx (@esimonline) or email esimonline.asia@gmail.com with the make and model, the OS version, the exact error text and the order number. There is no phone line, and replies come during working hours.

FAQ

If I install before I travel, does the plan start counting straight away?+

Usually not: many plans start from the profile's first connection to a network rather than from the download. The thing to do is keep that profile's data roaming off until you arrive. The exact trigger belongs to each plan, so read that line on the plan page before buying.

The phone says it cannot add the plan after scanning — what now?+

Check three things in order: that the connection is live and stable, that the handset supports eSIM and is not carrier-locked, and that the code has not already been used to install. If all three hold and it still fails, send us the error text word for word with the model and order number. Do not retry repeatedly — some codes limit the number of attempts.

I changed phones mid-trip — can the profile come with me?+

It depends on the upstream provider and on both handsets. Some phones have a built-in profile transfer, some cases need the provider to reissue, and some cannot be done. Do not delete it from the old phone before you have an answer, because deleting is usually irreversible. Contact us with the order number and both models.

I cannot find the add-eSIM menu on my Android phone+

Makers place that menu differently and reword it with each update. Use the settings search box and type eSIM, or SIM, which sidesteps the menu structure entirely. If the search returns nothing at all, the model may not support eSIM, or the variant sold in your market may have had it removed — check with the manufacturer or whoever sold you the phone.

Do I need to install an app?+

No. eSIM handling is built into the phone's operating system and every step happens in Settings. If someone tells you to install an app from a link in a message in order to activate a plan, treat that with suspicion — we never ask for it.

The install finished but there is still no signal — what went wrong?+

If you are still in your home country that is expected: a travel plan is built to attach to networks at the destination, not here. If you are already there, confirm the right profile is enabled, that its data roaming is on and that it is set as the data line, then wait about fifteen minutes before toggling airplane mode once.

How do I install an eSIM on an iPhone?

Open Settings, go to Cellular, and choose to add an eSIM. Scan the QR code we send, or enter the details manually using the SM-DP+ address and activation code. Once it installs, label the profile clearly and set it as the line used for cellular data.

How do I install an eSIM on Android?

The menu path varies by brand, but the idea is the same: open the network or SIM settings, find the option to add a downloaded SIM or eSIM, then scan the QR code. On some models it sits under SIM management, on others behind a phrase like add mobile plan.

Can I install without scanning a QR code?

Yes. Every profile also comes with manual details: an SM-DP+ address and an activation code. You need this when you are reading the order page on the same phone you are installing to, since there is no second screen to scan from.

Do I need internet to install an eSIM?

Yes — the phone has to download the profile from the provider's server. Wi-Fi or your home SIM's data both work. This is exactly why installing before you leave home is the safer sequence, then activating on arrival.

How many times can the QR code be used?

As a rule, once. After the profile downloads, the same code will not install on another handset. Deleting the profile may require the provider to reissue it, and that is not always possible.

I deleted the profile by mistake — can I get it back?

It depends on the upstream provider: some can reissue, some cannot because the profile is already bound to a device. For plans we sell, contact us with the order number and we will tell you honestly whether reissue is possible before you buy again.

Can one profile go on two phones?

No — one profile, one device. Two travellers need two profiles, or one phone shares a hotspot with the other, provided the plan allows sharing.

What should I name the profile?

Use something that identifies the trip at a glance, like the country and month. Default names look nearly identical once you have several profiles, and that is how people switch off the wrong one.

How do I switch between my home SIM and the eSIM?

In the cellular settings, choose which line carries data and which handles calls. The usual setup is eSIM for data with data roaming switched off on the home SIM, so nothing bills you by accident.

How long do I have to install after buying?

Most plans give a window after purchase in which the profile must be installed and started; the plan page states it. Past that window the profile can expire even if it was never used, so check the line before buying months ahead.

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