TL;DR: If your RoameSIM eSIM is installed but you have no data, check — in order — data roaming, correct line for mobile data, destination country arrival, airplane mode restart, APN settings, and remaining plan data. Most issues are fixed in minutes without replacing the eSIM.
Before you start: quick checklist
- You are in the destination country covered by your plan (or a multi-country regional plan that includes it).
- Your phone is eSIM-compatible and carrier-unlocked.
- The eSIM profile shows as installed in settings (not only the QR email saved).
- You have remaining data and the plan validity has not expired.
Not sure about device compatibility? Use the checker on any RoameSIM package page or read our eSIM phone guide.
Fix 1: Turn on data roaming (most common)
Travel eSIMs use partner networks abroad. Roaming must be enabled on the eSIM line, not only on your home SIM.
iPhone: Settings → Mobile Data → select your RoameSIM line → Data Roaming → On.
Android: Settings → Network & Internet → SIMs → select eSIM → Roaming → On (wording varies by manufacturer).
Fix 2: Select the correct line for mobile data
On dual-SIM phones, mobile data must use the travel eSIM line.
iPhone: Settings → Mobile Data → Mobile Data → choose your RoameSIM plan.
Android: Settings → SIMs → set the eSIM as default for Mobile data.
Keep your home SIM for calls/SMS if needed, but disable mobile data on the home line to prevent accidental roaming fees.
Fix 3: Activate at the destination, not only install at home
Installing the QR at home is correct — but data often starts when the eSIM registers on a network in the covered country. If you installed days before travel, land first, then enable the eSIM line and roaming. See our iPhone install guide or Android install guide.
Fix 4: Toggle airplane mode or restart
After landing: enable airplane mode for 30 seconds, disable it, and wait up to two minutes for network registration. A full device restart also helps after crossing borders.
Fix 5: Confirm the eSIM line is turned on
iPhone: Settings → Mobile Data — ensure the RoameSIM plan toggle is on.
Android: Settings → SIMs — ensure the eSIM is enabled.
Fix 6: Check plan data and validity
If your allowance is used up or the validity period ended, data will stop. Check your order confirmation email or private tracking link for status. Need more data? Purchase a new plan before your trip ends.
Fix 7: Verify country coverage
Single-country plans work only in that country. Regional plans cover listed destinations only — confirm your current location is included. For Europe trips see best eSIM for Europe; for the UK see UK guide.
Fix 8: APN settings (Android, occasionally iPhone)
Most RoameSIM profiles configure APN automatically. If you have signal but no data, check APN under mobile network settings. Leave blank or set to automatic first; only change if support advises. Wrong APN is a common Android issue after manual profile edits.
Fix 9: Disable VPN and private DNS temporarily
VPN apps, ad blockers, and custom DNS (e.g. NextDNS) can block new carrier profiles. Disable them, retry connectivity, then re-enable if needed.
Fix 10: Re-download profile only if install failed
Do not delete a working profile to “try again” — that uses the eSIM. Only re-scan the QR if installation never completed. If the QR was already used successfully, contact support instead of deleting.
Fix 11: Carrier lock and iOS region
Locked phones reject third-party eSIMs. Verify unlock status with your carrier before travel. On iPhone, ensure iOS is up to date (Settings → General → Software Update).
Fix 12: When to contact support
Email info@roamesim.io with:
- Order reference or checkout email
- Device model and OS version
- Destination country
- Screenshots of Mobile Data / SIM settings showing line selection and roaming
Our team will walk through advanced steps. Refund eligibility is described in our Refund Policy when a technical issue cannot be resolved after cooperation.
Prevention: install correctly before you fly
- Install on home Wi‑Fi using the QR from your email or order tracking page.
- Confirm dual-SIM data line settings before departure.
- Estimate data needs with our travel data calculator guide.
Still need a plan?
Browse RoameSIM eSIM plans for your next destination — instant email delivery, guest checkout, and support if something goes wrong.
Frequently Asked Questions
Why is my eSIM installed but has no internet?
The most common causes are data roaming turned off, the wrong mobile line selected for data, or activating before arriving in the destination country. Work through the checklist in this guide in order.
Do I need to turn on data roaming for a travel eSIM?
Yes. Travel eSIMs connect through partner networks abroad. On iPhone go to Settings → Mobile Data → your eSIM line → Data Roaming ON. On Android enable roaming for the eSIM line in SIM or Mobile network settings.
Can I use my home SIM and travel eSIM at the same time?
Yes on dual-SIM phones. Set the RoameSIM line as the default for mobile data and keep your home SIM for calls and SMS. Turn off data roaming on your home SIM to avoid surprise charges.
My eSIM worked yesterday but not today — what changed?
You may have crossed a border outside your plan coverage, exhausted your data allowance, or hit the validity end date. Check remaining data in your order email or tracking link, and confirm your plan covers your current country.
Should I restart my phone after installing an eSIM?
Often yes. After landing in your destination, toggle airplane mode for 30 seconds or restart once. This forces the device to re-register on the local network.
When should I contact RoameSIM support?
Contact us at info@roamesim.io if you completed every step in this guide, your device is unlocked and eSIM-compatible, you are in a covered country, and the profile still cannot connect. Include your order reference and screenshots of your mobile data settings.
Can I get a refund if my eSIM never connects?
If the eSIM cannot be installed or used due to a technical issue on our side after troubleshooting with support, you may be eligible under our Refund Policy. Installed and activated profiles are generally non-refundable.
