How long does installing an eSIM take?
Usually a few minutes. The longest part is downloading the profile, which depends on the Wi-Fi you install over. Do it at home on a stable connection, and avoid locking the screen or switching apps midway, since an interrupted download may have to start again.
This question usually comes from someone a few hours from boarding who's just remembered the eSIM still isn't installed. The short answer is a few minutes, but 'a few minutes' varies with several factors outside our control, chiefly the speed of the Wi-Fi used while the profile downloads, which is the single longest step in the whole process.
This page explains which step actually takes time, what makes it faster or slower, why doing this at home beats doing it at the airport, what happens if the download gets interrupted, and what to do if it hangs for an unusually long time.
Which step actually takes the longest
The eSIM install process breaks down roughly into three stages: scanning the QR code or tapping the link, downloading the profile file onto the device, and naming the line and confirming completion. The first and last stages are nearly instant, since they're just on-screen confirmations. The part that actually takes time is the middle one — downloading the profile file — where the file size and the connection speed at that moment determine whether it's fast or slow.
What affects the speed
The speed of the Wi-Fi connected at that moment is the biggest factor. Next is how crowded that same Wi-Fi network is with other users at the time — a public Wi-Fi with many people connected at once can slow a download down more than usual. The phone's own model and software version also have a small effect on how quickly the file gets processed after downloading. We can't give a fixed speed figure, since it genuinely varies by real situation.
Why installing at home beats doing it at the airport
Installing at home carries two advantages at once: more stable Wi-Fi, and time to troubleshoot if something goes wrong without being rushed. That's unlike an airport, which usually has crowded public Wi-Fi and a limited window before boarding is called. If the download is slow or stalls right then, the stress goes up far more than it needs to.
Installing ahead of time does not start the plan's own validity clock, since installation only saves the profile onto the device. Actually switching it active and starting that plan's timer only happens once you turn on data roaming for that line yourself, which should only be done once you've arrived at the destination.
If the download gets interrupted partway
If you lock the screen, switch to another app, or the Wi-Fi drops while the profile is downloading, the system usually treats that download as failed and needing a restart from scratch — not a resume from where it stopped, the way an ordinary file download might work. That's because an eSIM profile is checked rigorously for integrity before being written to the chip, and an incomplete file gets rejected outright.
The difference between installing and activating
Many people confuse these two, assuming they're the same step, but they're genuinely separate. 'Installing' means saving the profile file onto the device — quick, and it can be done however many days ahead of travel you like. 'Activating' means switching on data roaming for that line so the phone actually starts connecting to the network, and that's the point where the plan's own validity period starts counting, according to that plan's terms.
Step-by-step installation
- 1Connect to stable Wi-Fi before startingAvoid public Wi-Fi of unknown crowding — pick a home or work Wi-Fi you already trust.
- 2Open the order confirmation email and have the QR code or link readyBring up the screen with the QR code or link before opening the settings menu.
- 3Scan or tap the link in the cellular menuFollow the on-screen prompts, and do not lock the screen during this step.
- 4Wait until a success message appearsDo not close the app or switch screens until you see a confirmation that installation is complete.
- 5Name the line so it's easy to recogniseName it by country or trip, so it's easy to tell apart from any other lines already installed.
Summary table: what speeds things up or slows them down
| Factor | Effect on speed |
|---|---|
| Stable home Wi-Fi | Usually downloads quickly and smoothly |
| Crowded public Wi-Fi | Can be slower and more prone to dropping mid-download |
| Locking the screen or switching apps mid-download | Usually forces the download to restart from scratch |
| Battery saver modes that limit background connections | Can slow the download or pause it temporarily |
Comparison table: how the wait compares on iPhone and Android at each step
| Step | iPhone | Android |
|---|---|---|
| Confirming to start install | Instant after scanning or tapping the link | Also instant, though the menu can differ by manufacturer |
| Downloading the profile | Depends on the Wi-Fi speed at the time, the same as any device | Depends on the Wi-Fi speed at the time, the same as any device |
| Confirming completion and naming the line | Instant once the download finishes | Also instant, though some models add an extra confirmation step |
Why the download percentage sometimes seems to freeze at the same number
Some phones show a percentage progress bar while the profile downloads, and it can appear stuck at the same number for an unusually long stretch. Part of the reason is that this bar is an estimate, not a number updating in exact real time, so it can look frozen while the system is still working in the background, before jumping to completion in the final few seconds.
If it sits there longer than feels normal, wait a little longer before concluding it's genuinely stuck, since restarting or closing the app partway will definitely force a restart from scratch, rather than giving it the chance to finish on its own if left a bit longer.
Does low storage on the phone affect installation?
The eSIM profile file itself is very small compared with an ordinary photo or video, so running low on storage isn't likely to directly cause an install failure on its own. But a phone with storage nearly full sometimes runs slower across every function generally, including the processing that happens during installation.
If the phone is already very low on free storage, clearing some space beforehand may help it run more smoothly overall, but it isn't the right fix if the real issue is the Wi-Fi speed in use. Keep these two factors separate when trying to work out the cause.
Does an auto-configured APN save time versus setting one manually?
Some eSIM networks send the APN value along with the profile at install time, so the phone connects for data immediately after switching on roaming, with no extra manual entry needed. Others require entering the APN value yourself as given in the order email, which adds a few extra minutes after the main installation step is done.
Which type your specific plan is will be noted in the order confirmation email or that plan's own page. If the internet doesn't connect after switching on data roaming, check whether manually setting the APN is required before concluding something went wrong with the install.
On a multi-country trip, is a fresh download needed every time?
If every country's profile was installed ahead of departure, the download step only happens once per profile. On arrival in each country, all that's needed is switching on data roaming for the line already installed — not downloading again — which makes the process at each stop much quicker than the very first installation.
The advantage is not depending on uncertain Wi-Fi at each new country, since the longest step was already finished back at home — all that's left is switching lines on and off through the cellular menu, which doesn't even need an internet connection at all.
Can I use another phone's hotspot instead of Wi-Fi?
If there's no Wi-Fi to use at that moment, connecting through another phone's hotspot with active data works too, since there's no requirement that it come from a router specifically. All that matters is the device being installed on has a connection stable enough to finish downloading the profile file in one go.
The caveat is that a hotspot's stability depends on how strong the data signal is on the phone sharing it. If that phone itself sits somewhere with weak signal, the download can stutter just as it would over unstable Wi-Fi — pick whichever connection you're most confident has the best signal at that moment.
Mistakes that slow the install down or make it fail
Does having a VPN on during installation matter?
If a VPN app is left running while the profile downloads, some phones may download more slowly or fail to connect, since a VPN reroutes the connection through another server before reaching the real internet, adding a step along the way that can affect download stability.
It's worth turning the VPN off temporarily before starting the install, then switching it back on as normal afterward. If a VPN was on during a stalled install, try turning it off and starting the install again before concluding the issue lies elsewhere.
Checklist before installing
- Connect to stable, familiar Wi-Fi
- Turn off battery saver mode temporarily during install
- Have the order confirmation email open and ready
- Do not lock the screen or switch apps until a success message appears
- Install while at home or at work, not right before boarding is called
If installation hangs for an unusually long time
If the download bar sits stuck for an unusually long time without moving at all, try toggling airplane mode off and on once to reset the connection, then try scanning the same QR code or tapping the same link again. If it still doesn't move, switch to a different Wi-Fi you're confident is more stable.
If both of those still don't get it installed, message us on LINE or by email with the phone model and which step it's stuck at. We can check the profile's status on our side, though the Wi-Fi speed in use is a factor outside anything we can adjust directly.
When you reach out, mention whether you've already tried toggling airplane mode and switching Wi-Fi, since that rules out the most common causes first and lets us focus on other possibilities faster, rather than asking you to repeat something you've already tried.
Συχνές ερωτήσεις
How many minutes does installing an eSIM take?+
Usually a few minutes, mostly depending on the Wi-Fi speed used during the profile download. We don't have a fixed figure, since it depends on each person's real situation.
Can I install it several days before travelling?+
Yes — installation only saves the profile onto the device and doesn't start the validity clock until you switch on data roaming yourself.
If the download stalls partway, do I need to start over?+
Generally yes, since the profile file must be complete before being written to the chip. Try toggling airplane mode and scanning again.
Should I install at the airport or at home?+
At home is better, since it usually has more stable Wi-Fi and time to troubleshoot without rushing, unlike an airport where public Wi-Fi tends to be crowded and time is limited before boarding.
I've tried everything and it still won't install — what next?+
Message us on LINE or by email with the phone model and where it's stuck. We can check the status on our side.
Instagram and TikTok have no web share button, so we open your phone's share sheet or copy the link instead.