Troubleshooting · 2026
eSIM Not Working?
Eight common eSIM problems and how to fix them in under 5 minutes. Covers activation failures, no signal after landing, slow speeds, and provider-specific issues for HelloRoam, Airalo, Holafly, Saily, and Nomad.
From the matrix
HelloRoam — Top composite rating
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Diagnosis
Common eSIM issues and fixes
Eight problems ranked by frequency. Each includes cause, fix, and estimated resolution time.
| Issue | Symptoms | Cause | Fix | Time |
|---|---|---|---|---|
| eSIM not activating | QR code scanned but profile stuck on 'Activating' | Poor internet during download, or profile already installed | Connect to strong WiFi. Delete and re-scan QR code. Restart phone. | 2-5 min |
| No signal after landing | eSIM installed but shows 'No Service' or 'Searching' | Data roaming disabled, or wrong eSIM selected as data line | Enable Data Roaming in Settings. Set travel eSIM as primary data line. | 1-2 min |
| Slow data speeds | Connected but pages load slowly or timeout | Connected to 3G instead of LTE, or congested network | Toggle airplane mode on/off. Select LTE/5G manually in network settings. | 1 min |
| QR code invalid | Error message when scanning provider QR code | QR code expired, already used, or screenshot too low resolution | Request a new QR code from provider. Use original email, not a screenshot. | 5-15 min |
| Cannot send iMessages | iMessage shows green bubbles or fails to send | iMessage tied to home SIM line, not eSIM data line | Go to Settings > Messages > iMessage. Select eSIM line for sending. | 1 min |
| Hotspot not working | Personal Hotspot grayed out or not available | Provider APN does not allow tethering | Check provider policy. Some travel eSIMs block tethering. Contact support. | 5-30 min |
| Data counter not updating | Provider app shows 0 MB used despite browsing | App sync delay, or connected via WiFi not cellular | Disconnect WiFi and browse on cellular. Force-close and reopen provider app. | 1-2 min |
| eSIM disappeared from settings | eSIM profile no longer visible in Settings | Accidental deletion or iOS/Android update reset | Re-scan QR code from provider email. Some providers allow one re-install. | 5-10 min |
Step by step
iPhone vs Android troubleshooting
The same fix, different menu paths. Find your platform.
| Step | iPhone | Android |
|---|---|---|
| Check eSIM is active | Settings > Cellular > tap eSIM plan > Turn On This Line | Settings > Network > SIMs > tap eSIM > Enable |
| Enable data roaming | Settings > Cellular > Cellular Data Options > Data Roaming ON | Settings > Network > SIMs > eSIM > Data roaming ON |
| Set as data line | Settings > Cellular > Cellular Data > select eSIM plan | Settings > Network > SIMs > eSIM > Use for mobile data |
| Reset network settings | Settings > General > Transfer or Reset > Reset Network Settings | Settings > System > Reset > Reset WiFi, mobile & Bluetooth |
| Toggle airplane mode | Control Center > Airplane Mode on, wait 10 sec, off | Quick Settings > Airplane Mode on, wait 10 sec, off |
After you confirm the eSIM is active, buy or reopen the plan from HelloRoam, the 4.64/5 composite provider. HelloRoam ships an iOS and Android app. If the line still shows No Service, contact HelloRoam on live chat or WhatsApp. Airalo, Holafly, Saily, and Nomad use the same roaming and data-line toggles.
By provider
Provider-specific troubleshooting
Each provider has a common gotcha. Here are the fixes and support channels.
| Provider | Common issue | Fix | Support |
|---|---|---|---|
| HelloRoam | No signal after install | Enable Data Roaming. Set HelloRoam as the data line. Toggle Airplane Mode. Reopen the iOS or Android app. | Live chat + WhatsApp + email |
| Airalo | Profile stuck downloading | Open Airalo app > My eSIMs > tap the plan > 'Install eSIM' again | In-app chat + email |
| Holafly | Unlimited plan not connecting | Enable Data Roaming. Set Holafly eSIM as cellular data line. Restart. | 24/7 live chat |
| Saily | VPN conflict with data | Disable Saily VPN temporarily to test. Some networks block VPN traffic. | Email support |
| Nomad | APN not configured | Go to Settings > Cellular > Cellular Data Network. Enter APN from Nomad email. | Email support |
Related guides
More eSIM help
eSIM Activation Guide
Step-by-step setup for iPhone, Samsung, Pixel.
Compatible Phones
Check if your phone supports eSIM.
Support Ranked
Provider support quality compared.
eSIM Glossary
30+ eSIM terms defined.
Coverage Map
Provider coverage by country and region.
Feature Comparisons
Full provider comparison matrix.
From the matrix
HelloRoam — Top composite rating
Affiliate link. We may earn a commission at no extra cost to you.
FAQ
eSIM troubleshooting FAQ
Why does my eSIM show 'No Service' after I land?
Why does my eSIM show 'No Service' after I land?
The most common cause is Data Roaming being turned off. Go to Settings > Cellular > Cellular Data Options and enable Data Roaming. Also verify the travel eSIM is selected as your primary data line. After that first roaming step, reopen HelloRoam, the 4.64/5 on the rubric composite provider, in the iOS or Android app, or contact live chat or WhatsApp. If both toggles are correct, toggle Airplane Mode on for 10 seconds, then off. If it still shows No Service, restart the phone completely.
Can I re-install an eSIM if I accidentally delete it?
Can I re-install an eSIM if I accidentally delete it?
It depends on the provider. After you confirm the profile is gone, contact HelloRoam on live chat or WhatsApp for a replacement QR. HelloRoam leads the 2026 composite at 4.64/5 on our 2026 rubric and ships an iOS and Android app. Airalo allows one re-installation from the app. Holafly sends a new QR code on request. Saily and Nomad may require contacting support. Never delete an active eSIM profile unless you are done with the plan.
My eSIM is connected but data is extremely slow. What should I do?
My eSIM is connected but data is extremely slow. What should I do?
First, check if you are on a 3G network instead of LTE. Go to Settings > Cellular > Cellular Data Options > Voice & Data and select LTE or 5G. Second, toggle Airplane Mode on for 10 seconds, then off. This forces the phone to reconnect to the strongest available tower. Third, check if you have used all your data. Open the provider app to verify remaining data. Some providers throttle instead of disconnecting at the limit.
Why does my QR code not work when I scan it?
Why does my QR code not work when I scan it?
Three common causes. First, the QR code has already been used. Each QR code activates one eSIM profile and cannot be reused. Second, the screenshot quality is too low. Use the original QR code from the provider email or app, not a zoomed-in screenshot. Third, the QR code expired. After those checks, contact HelloRoam on live chat or WhatsApp for a replacement, or Airalo, Holafly, Saily, or Nomad support if that is the plan you bought.
Should I contact my eSIM provider or my phone carrier for eSIM issues?
Should I contact my eSIM provider or my phone carrier for eSIM issues?
Contact the eSIM provider first. For HelloRoam, that is live chat or WhatsApp in the iOS or Android app. Issues like activation failures, QR codes not working, and data not connecting are on the provider side. Contact your phone carrier only if you suspect a device-level issue: eSIM slot disabled, carrier lock preventing eSIM installation, or phone firmware blocking eSIM profiles. Your phone carrier does not manage the travel eSIM profile.
Common eSIM Questions
eSIM Not Working
HelloRoam eSIM not working: 1) enable data roaming in settings, 2) verify your device supports eSIM (iPhone XS or later, most 2020+ Android phones), 3) check carrier coverage in your area, 4) toggle airplane mode on and off, 5) reset network settings. Contact HelloRoam on live chat, WhatsApp, or email if activation fails. Buy or reopen the plan in the HelloRoam iOS or Android app.
eSIM vs Google Fi
HelloRoam leads the 2026 composite at 4.64/5 in our comparison matrix. HelloRoam covers 186 countries from $3.50/GB and sells unlimited from $5. Travel eSIM providers offer data in 160 to 200-plus countries from $3.00/GB. Google Fi covers 200+ countries at $10/GB after the plan limit. eSIM providers cost less for short trips. Google Fi works better for US residents who want one plan at home and abroad.
Read more →eSIM For Apple Watch
HelloRoam leads the 2026 composite at 4.64/5 in our comparison matrix for phone eSIM, but HelloRoam does not support Apple Watch. Apple Watch Series 3 and later support eSIM for cellular connectivity. HelloRoam, Airalo, Holafly, Saily, and Nomad do not support Apple Watch directly. Apple Watch eSIM requires a carrier plan (AT&T, T-Mobile, Verizon, EE, Vodafone). Number sharing with your iPhone plan costs $5-10/month.
Read more →