Landed abroad and your travel eSIM has no internet? Before trying to reinstall it, check that the eSIM is enabled and selected for mobile data. A phone may show signal bars but fail to load Maps—or display “Activating,” “No Service,” or “SOS.”
These symptoms need different fixes. Use the table below to identify your problem, then follow the steps for iPhone, Samsung Galaxy or Google Pixel. Most checks are safe to try without removing the eSIM; menu names may vary by device and software version.
Quick fix: If your eSIM is installed but mobile data is not working abroad, check that the travel line is enabled, select it for mobile data, turn on data roaming on the travel line if your provider requires it, and briefly toggle Airplane Mode. If that does not help, verify destination coverage, remaining data and any provider-specific APN settings. Do not delete an installed eSIM just to troubleshoot.
Jump to: Find your problem · Two-minute checklist · iPhone fixes · Samsung and Android · Activating and No Service · APN and network · Get help · FAQs
First, identify what is actually wrong
A phone can show an installed eSIM, connect to a mobile network, and still fail to send data. That is different from a profile that never installed. Start with the message or behavior you can see:
| What you see | What it usually points to | First thing to check |
|---|---|---|
| eSIM is not listed in SIM settings | Installation may not have completed, or you are looking at another line | Look for the travel line under SIMs or Cellular |
| eSIM is listed but switched off | The downloaded profile is not enabled | Turn on the travel line |
| Signal bars appear, but websites do not load | The wrong data SIM, roaming setting, exhausted allowance or APN may be involved | Select the eSIM for mobile data |
| “Activating” or “Not started using” | Setup or first network connection may still be pending, depending on the plan | Check whether you are in a covered destination |
| “No Service” or “Searching” | The line has not registered on a usable cellular network | Check coverage, roaming and network selection |
| “SOS” or “SOS only” on iPhone | The phone is not connected to its normal cellular network for that line | Inspect the individual SIM lines, not just the status bar |
| “QR code already used” | The profile may already be installed, or the code may be single-use | Check SIM settings before attempting another scan |
The first question to answer is simple: Is the travel eSIM visible in your phone’s settings? If yes, concentrate on connection settings rather than scanning the QR code again.
A two-minute checklist before changing advanced settings
- Turn off Wi-Fi briefly to test mobile data. Otherwise, a working hotel or airport Wi-Fi connection can hide the fact that cellular data is still offline. Make sure Airplane Mode itself is off.
- Confirm you have arrived in a supported country. An eSIM purchased for one country will not necessarily work in a neighboring country. Check the exact coverage list, not just the plan name.
- Check plan status and allowance. Verify that the package is available for use, within its validity period and has data remaining. If the plan has not yet started, its start conditions matter.
- Enable the travel eSIM and select it as the mobile-data line. On iPhone, turn Allow Mobile Data Switching OFF to prevent automatic fallback to the primary SIM for data. Phones with two SIMs can otherwise use the wrong line for internet.
- Check data roaming on the travel eSIM. Many international travel eSIMs connect through partner networks and require this setting. It does not mean you should enable paid roaming on your home line.
- Reconnect. Turn Airplane Mode on for around 15–30 seconds, switch it off and give the phone time to register. If needed, restart the device once.
Test a normal website in your browser with Wi-Fi turned off. If it still fails, follow the steps for your phone below.
eSIM not working on iPhone: the settings to check
On iPhone, you can keep your regular number for calls and texts while using a separate eSIM for data. The crucial detail is which line is selected under Cellular Data. Menu names may be Cellular, Mobile Data, or Mobile Service, depending on region and iOS version.
1. Make sure the travel line is turned on
Open Settings → Cellular (or Mobile Service). Under SIMs, tap your travel eSIM. Confirm Turn On This Line is enabled. It may be labeled “Travel,” “Secondary,” “Business,” or with a carrier name you do not recognize: these labels do not always match the shop where you purchased the plan.
If no travel line appears, jump to the installation section rather than buying another plan immediately.
2. Select your travel eSIM for data and turn data switching off
Return to Settings → Cellular → Cellular Data and select the travel eSIM. If you are using a prepaid travel plan specifically for internet, this is usually the line you want to use abroad.
Important: Turn Allow Mobile Data Switching OFF. After selecting your travel eSIM under Settings → Mobile Data → Mobile Data (or Settings → Cellular → Cellular Data), switch off Allow Mobile Data Switching (also called Allow Cellular Data Switching in some regions). This prevents the iPhone from automatically falling back to your Primary/home SIM for mobile data when the travel line has poor coverage, helping avoid unexpected home-carrier data roaming charges.
Keep Data Roaming OFF on your Primary/home line unless your home plan includes it, and follow your travel eSIM provider’s instructions for enabling roaming on the travel line. Disabling data switching does not by itself prevent charges for calls or SMS on your home line. With switching turned off, data access during a call on your other line can be affected on some setups; see Apple’s Dual SIM guide.
3. Turn on data roaming for the travel eSIM
Go to Settings → Cellular → [your travel eSIM] → Cellular Data Options (if available) and turn Data Roaming on, following your eSIM provider’s instructions. On some iPhone versions the roaming toggle sits directly in the line settings.
Important: Roaming on a prepaid travel eSIM is not the same as roaming on your domestic line. If you want to avoid unexpected charges, keep data roaming on your home line off unless your home operator’s plan specifically includes it.
4. Refresh the connection
Use Airplane Mode for 15–30 seconds, then turn it off. Wait briefly before testing again. Restart the iPhone if the line still does not connect. Apple’s official No Service and SOS troubleshooting recommends reconnection, checking the line, roaming and contacting the provider when needed.
If the phone works on Wi-Fi but still cannot load pages using the eSIM, move to the APN and network checks below.
eSIM not working on Samsung or other Android phones
Android settings differ across manufacturers. The goal is the same: turn on the downloaded travel profile, assign it to mobile data, and allow its roaming connection where required.
Samsung Galaxy
- Open Settings → Connections → SIM manager (sometimes SIM card manager).
- Find the travel eSIM and make sure it is enabled.
- Under Preferred SIMs, choose the travel eSIM for Mobile data.
- Go to Settings → Connections → Mobile networks and check Data roaming. On some models, the exact menu or roaming control depends on the carrier and active SIM.
- If you see a Data switching or similar automatic-switching option, review it so your home SIM does not unexpectedly become the data line.
- Toggle Airplane Mode, wait for the local network, then test a website with Wi-Fi off.
Samsung’s Galaxy connection settings guide also explains mobile network options such as APNs and network operators. Don’t change these unless there is a reason to.
Google Pixel and many other Android phones
- Open Settings → Network & internet → SIMs.
- Tap the travel eSIM and enable Use SIM.
- Turn on Mobile data, and select the travel line as your data SIM when the device has more than one SIM.
- Turn on Roaming for the travel profile if required by your plan.
- Reconnect using Airplane Mode, then test with Wi-Fi disabled.
Google’s Pixel mobile connectivity guide covers SIM activation, mobile-data settings and device troubleshooting. On other Android brands the menus may read Mobile network, SIMs, SIM cards, or Connections.
eSIM stuck on “Activating,” “No Service,” or “SOS”
These messages can look alarming when you have just landed, but each needs a different response.
The eSIM says “Activating” before departure
An eSIM can be downloaded before you travel but may not register on a partner network until you arrive. Installation and the start of plan validity are not necessarily the same event. Some plans begin on first supported network connection; others have different activation rules. Check your order instructions rather than assuming every travel eSIM behaves alike.
If the profile is already present, avoid repeatedly scanning the QR code. After reaching a supported destination, enable the line and follow the roaming instructions. If it remains stuck after a reasonable time on a local network, contact your provider.
The phone shows “No Service” or “Searching”
This generally means the relevant line has not joined a cellular network. First try an area with better reception—indoors, a basement or a remote road can all affect coverage. Next, check that the travel SIM is enabled, destination coverage is correct, and the network is set to Automatic when supported.
If automatic network selection fails, some eSIM providers list specific partner networks that you can try manually. Only select a supported partner network given in your plan instructions. A random network from the list may reject the connection.
iPhone displays “SOS” but you have a travel eSIM
SOS or SOS only does not prove the travel eSIM failed to install. Apple uses the indicator when the device is not connected to its usual cellular network, although emergency calling may remain possible through another network in supported regions. With two lines, inspect each line individually under Settings → Cellular and check which one is assigned to data. The travel line’s status and your home line’s status are separate things.
Signal bars are visible, yet nothing loads
That is a useful clue: the phone may be registered on a network without a working data session. Recheck the selected data SIM, available plan data and any required APN. Also disable a VPN temporarily for testing if you use one. If cellular data works after that, restore your preferred privacy settings and investigate the VPN rather than reinstalling the eSIM.
APN, network selection and other fixes worth trying
An Access Point Name (APN) tells the phone how to reach the provider’s mobile data network. Most users should leave APN settings alone unless the provider supplied an exact value or the correct settings did not load automatically.
On iPhone: Where your operator allows editing, look for Settings → Cellular → [travel eSIM] → Cellular Data Network. This menu may be missing on some devices or plans. If it is available, compare the APN against your purchase or support instructions.
On Samsung: Look under Settings → Connections → Mobile networks → Access Point Names. On other Android phones, APN settings may be within the selected SIM’s mobile network menu. Enter only the APN, username, password and authentication details specifically provided for your plan; some require none of these extra fields.
Do not copy an APN from a random forum or from a different eSIM provider. Using the wrong value can prevent data from connecting.
Android dual-SIM check: If both your home SIM and travel eSIM are active, confirm the travel eSIM is selected for mobile data and review the APN associated with that travel line. If data still fails, you can briefly turn off the home SIM to test, provided you do not need calls or SMS on that line during the test. Try a website with Wi-Fi off, then turn the home SIM back on. This helps isolate a SIM-selection or routing problem; it does not mean the home SIM automatically overwrites the travel eSIM’s APN.
5G or 4G/LTE? Not every travel plan or partner network offers 5G in every destination. If your phone is set to 5G only and mobile data fails, switch the preferred network mode to Automatic (5G/LTE/4G) where available, or temporarily test LTE/4G. Restore your preferred setting once you know which connection works. Software and carrier-settings updates may help too, but download them using reliable Wi-Fi and avoid changing several advanced settings at once.
What about resetting network settings? Leave that as a later step after speaking with support. Depending on the device and reset choice, it can remove saved network preferences, Wi-Fi connections and other settings. A factory reset or eSIM deletion is not an appropriate first response to a data problem.
The QR code isn’t working, or the eSIM isn’t listed
If the travel eSIM does not appear anywhere in your SIM settings, you may have an installation problem rather than a mobile-data problem.
Connect to reliable Wi-Fi and check whether the phone supports eSIM and is not carrier-locked. On iPhone, Settings → General → About → Carrier Lock should normally show No SIM restrictions on an unlocked device. If the phone is locked, contact the carrier responsible for the lock.
On iPhone, the usual installation path is Settings → Cellular → Add eSIM → Use QR Code. Android phones commonly use SIM manager → Add eSIM or Network & internet → SIMs → Add SIM. If you received manual details, the SM-DP+ address and activation code must be copied exactly as provided.
If you get “code already used,” “cannot add cellular plan,” or an installation error, check whether the eSIM already exists under a different label. Some activation codes cannot be reused or moved freely between devices. Do not remove a profile to try scanning it again unless your provider confirms that it can be reissued. Apple’s eSIM setup troubleshooting recommends checking the existing line, restarting and contacting the provider if setup still fails.
For the complete QR and manual installation process, use the eSimity Help Desk, which has separate iPhone and Android instructions.
If the internet still doesn’t work, contact support with the right details
After the basic checks, further changes can make a simple issue harder to diagnose. Connect to Wi-Fi and send your provider a concise description of the problem. Include:
- Your order reference or the email associated with the purchase.
- Phone model and, if known, software version (for example, an iPhone or Samsung Galaxy model).
- The country and approximate area where you are trying to connect.
- Whether the eSIM appears in settings, and the exact message shown.
- Whether the phone shows signal bars, which SIM is selected for data and whether roaming is on.
- A screenshot of the relevant settings, with personal or security-sensitive details hidden.
Your provider may request the ICCID, a unique SIM identifier, through a private support channel. You should not post activation codes, QR codes, passwords or full identifiers publicly.
If you use eSimity, the Help Desk provides installation steps, and the contact page is a starting point for additional assistance. Keep the installed eSIM on your device while support investigates unless they specifically advise removal.
How to prevent the same problem on your next trip
Before leaving home, confirm device compatibility, check destination coverage and install the eSIM using stable Wi-Fi if the provider permits early installation. Save the order email and manual setup details somewhere available offline. Do not assume that installing a plan immediately starts its usable data period; read the specific validity rules.
Once you arrive, turn off Airplane Mode, enable the travel profile, select it for mobile data and follow its roaming instructions. On iPhone, switch Allow Mobile Data Switching OFF to avoid automatic fallback to your home data line. Keep your home number enabled for calls or SMS if needed, but check its roaming rules and charges separately.
If you are still deciding between a travel eSIM, a local SIM, roaming or pocket Wi-Fi, our guide to getting internet abroad compares the trade-offs. New to digital SIMs? Start with the beginner’s guide to eSIMs.
Frequently asked questions
Why is my eSIM connected but I have no internet?
A phone can register on a mobile network without routing data correctly. Check the selected mobile-data SIM, remaining plan allowance, roaming requirements and provider-specific APN. Test with Wi-Fi off to see whether cellular data itself is working.
Do I need to turn on data roaming for a travel eSIM?
Often, yes. Many international eSIM plans operate through roaming agreements with local networks. Enable data roaming on the travel eSIM if instructed by its provider. You do not need to enable paid roaming on your home SIM to do this.
Should I delete and reinstall an eSIM that doesn’t work?
No, not as an initial troubleshooting step. An installed eSIM may use a single-use QR code or need a new profile from the provider if deleted. Check settings and contact support first.
Why does my eSIM say “Activating” after installation?
The profile may still be waiting for a compatible network, especially if you installed it before leaving home. Check the plan’s start conditions and supported countries. If activation remains stuck after reaching a covered destination, contact the provider.
Why does my iPhone show SOS with an eSIM installed?
SOS indicates that the phone is not registered normally on a cellular network for the affected connection, but it doesn’t identify the cause or prove the eSIM is absent. Check each SIM under Cellular settings and verify which one is providing mobile data.
Can I use my normal number while the travel eSIM provides internet?
Usually yes on a compatible dual-SIM phone. Keep your home line for calls and SMS and choose the travel eSIM for mobile data. Ordinary calls or texts on your home line may still incur roaming charges depending on your operator and plan.
How long should I wait for my travel eSIM to connect after landing?
Allow a short period for the phone to register with a local network. If it still fails after a few minutes, follow the basic checklist, try Airplane Mode and check that the destination is covered. There is no universal activation time that applies to every provider.
Can I fix an eSIM problem without Wi-Fi?
You can change SIM selection, roaming and Airplane Mode offline. But installing a new profile, obtaining updated activation details or contacting support may require Wi-Fi or another working internet connection.
The bottom line
When an eSIM is not working abroad, start with the simple checks: is it installed, is the correct line selected for mobile data, and can it connect in your destination? Then move to roaming, allowance, APN and network selection. These checks solve many common setup mistakes without risking the loss of an installed profile.
If your eSimity travel eSIM still won’t connect, use the Help Desk or contact support with your order reference and a screenshot of the error. If you are preparing for a future trip, you can also browse eSimity travel eSIM plans and check the coverage and activation terms before purchasing.