eSIM Not Working? A Step-by-Step Troubleshooting Guide

Your flight has landed, you switch your phone on, and… nothing. No bars, no data, no maps. Before you panic, take a breath: in the vast majority of cases, a travel eSIM that "isn't working" is one settings toggle away from working perfectly. The eSIM itself is almost never broken — it's a digital profile stored securely on your phone, and there's rarely anything actually wrong with it. This guide walks you through the fixes in order, from the thirty-second checks that solve most problems to the deeper steps for stubborn cases.

One quick note before we start: if you haven't yet confirmed that your phone supports eSIM and is carrier-unlocked, do that first with our eSIM compatibility checker. A carrier-locked phone will refuse to connect to foreign networks no matter which settings you change.

Start Here: The Five-Minute Checklist

Work through these five checks in order. Most travelers never need to go further than this list.

1. Is the eSIM installed and turned on? Open your phone's mobile or cellular settings and look at the list of SIMs. Your AirPlans eSIM should appear there, and its toggle should be switched on. If you don't see it at all, the installation may not have finished — our step-by-step eSIM installation guide shows exactly what a completed install looks like.
2. Is data roaming enabled for the eSIM line? This is the single most common fix. Travel eSIMs connect to local networks as roaming partners, so data roaming must be switched on — but only for the eSIM line. Tap into the eSIM's own settings and enable data roaming there. Don't worry: this won't trigger roaming charges on your home number as long as roaming stays off on that line.
3. Is the eSIM selected as your mobile data line? Your phone can hold several SIMs, but only one of them provides data at a time. In your mobile data settings, make sure the AirPlans eSIM — not your home SIM — is chosen for mobile data.
4. Toggle airplane mode. Switch airplane mode on, wait about ten seconds, and switch it off again. This forces your phone to search for networks from scratch and resolves a surprising number of "no service" moments.
5. Restart your phone. The classic advice, and it earns its reputation. A full restart re-registers every SIM with the network and clears temporary glitches that a simple toggle can't.

Still Stuck? Deeper Fixes

Select a network manually

By default your phone picks a local partner network automatically, but sometimes it clings to one that isn't cooperating. In the eSIM line's settings, find network selection, switch off automatic mode, and wait for the list of available networks to load. Choose one manually; if it won't register, try the next one on the list. Once you're online you can stay on manual selection for the rest of your trip or switch back to automatic.

Check the APN settings

The APN (Access Point Name) tells your phone how to reach the internet through the network. Most eSIMs configure it automatically, but if you have signal bars and still no data, a missing or mistyped APN is a likely culprit. Find the correct APN in your AirPlans plan details, then compare it character by character with what's entered in the eSIM line's APN settings. Even one wrong letter will block data completely.

Reset network settings — with caveats

If nothing else has worked, resetting network settings restores your phone's connectivity configuration to a clean state and often clears stubborn glitches. Two important caveats. First, it erases saved Wi-Fi passwords and paired Bluetooth devices, so you'll need to reconnect to those afterwards. Second, read the reset screen carefully: choose only the option that resets network settings, never one that offers to erase the device or remove SIMs. A standard network reset does not delete your eSIM.

iPhone-Specific Notes

On an iPhone, everything lives in the cellular or mobile settings, where each SIM appears with its own label. Check three things: the eSIM's line is turned on, data roaming is enabled inside that line's settings, and the eSIM is selected as the mobile data line. You can keep your home SIM active for calls and texts while the eSIM handles data — a setup that works beautifully for staying reachable abroad. A quick tip: the carrier name shown at the top of Control Center reflects your active data line, so a glance tells you which SIM your data is actually using.

Android-Specific Notes

Android menus vary by manufacturer, but the pattern is the same: open settings, go to the network or connections section, then to the SIM manager or SIM cards list. Enable the eSIM, set it as the mobile data SIM, and turn on data roaming inside the eSIM's own entry. APN settings usually live under "Access point names" within the eSIM's mobile network options. If your phone offers a preferred network type, leaving it on automatic (5G/LTE) is the safest choice.

Common Problems, Decoded

"My eSIM is installed but says No Service"

This usually means the phone hasn't registered with a local network yet. Confirm data roaming is on for the eSIM, then try manual network selection as described above. Also give it a few minutes — registration after landing can take a little while. Finally, check in your AirPlans account that your plan has actually started; many plans activate on first connection in the destination, so an eSIM installed at home may show no service until you arrive.

"It works, but it's painfully slow"

First check whether you've used up your high-speed data — some plans reduce speed rather than cut you off entirely. If you're not sure how much data your trip realistically needs, our guide on how much data you need for travel breaks it down by usage. If your allowance is fine, the local network may simply be congested: try manual network selection to hop onto a different partner network, and toggle airplane mode to grab a fresh connection.

"The QR code won't scan"

Your phone can't scan a QR code shown on its own screen, so display it on another device or print it out. Increase the screen brightness, avoid glare, and hold the camera steady about twenty centimeters away. If scanning still fails, don't worry — every phone also accepts manual activation codes, and our installation guide explains how to enter them by hand.

"I accidentally deleted my eSIM"

Stop here and don't try to reinstall from the same QR code. For security reasons, most eSIMs are single-use: once a profile is deleted from the phone, the original QR code usually can't install it again. Contact AirPlans support instead — the team is available 24/7 and will help you get a replacement sorted so you're back online quickly.

When to Contact Support — and What to Send

If you've worked through everything above and still can't connect, stop guessing and let us take over — AirPlans support is available 24/7. To get you back online as fast as possible, include the following in your first message: your device model and software version, the country you're in, the exact error message or symptom, the steps you've already tried, and screenshots of your eSIM settings and any error you see. With that information in hand, most issues are resolved in a single exchange.

The bottom line: an eSIM that won't connect is almost always a settings issue with a quick fix, not a faulty product. Work through the checklist calmly, and if anything is unclear, we're here around the clock. And once you're back online, the next trip awaits — browse plans for over 200 destinations at airplans.app/destination.