Most travel eSIM installations work smoothly, but when something goes wrong in a foreign country, you need fast answers. This guide covers every common eSIM problem with step-by-step solutions — organized by symptom so you can find your fix quickly.
eSIM won't install
QR code does not scan: Ensure the QR code is displayed at full size and brightness. Try manual entry instead — your provider should supply an SM-DP+ address and activation code. "Unable to add cellular plan": Your phone may be carrier-locked. Contact your home carrier to unlock eSIM functionality. Also verify your phone model supports eSIM (compatibility list). "Cannot connect to server": The installation requires internet. Connect to WiFi or use an existing data connection. Try again in a few minutes — the provider's server may be temporarily overloaded.
eSIM installed but no data
Check your data line setting. The most common cause: your phone is routing data through your home SIM, not the travel eSIM. iPhone: Settings → Cellular → Cellular Data → select travel eSIM. Android: Settings → Network → SIMs → set travel eSIM as data SIM. Enable data roaming on the travel eSIM. iPhone: Settings → Cellular → travel eSIM → toggle Data Roaming on. This sounds counterintuitive, but travel eSIMs are technically "roaming" — even though you are paying a flat rate, your phone needs data roaming enabled to connect. Toggle airplane mode. Turn airplane mode on, wait 10 seconds, turn it off. This forces a fresh network scan. Restart your phone. A simple restart resolves many activation issues.
Slow data speeds
Network congestion. Speeds drop in crowded areas (airports, stadiums, tourist sites). Move to a less crowded area or wait — speeds usually improve. Wrong network. Your phone may have connected to a weak carrier. Try manual network selection: iPhone: Settings → Cellular → travel eSIM → Network Selection → toggle off Automatic and manually select a different carrier. Return to Automatic after testing. Throttled plan. If you have an "unlimited" plan, you may have hit a throttling threshold. Check your provider's fair usage policy.
eSIM disappeared from settings
On rare occasions, a software update or settings reset can cause an eSIM profile to disappear. Unfortunately, once deleted, most eSIM profiles cannot be reinstalled from the same QR code — you would need to contact your provider for a new one. Some providers (Airalo) allow re-downloading from their app. To prevent this: do not reset network settings while traveling, and delay iOS/Android updates until you return home.
Dual SIM conflicts
If both your home SIM and travel eSIM are active for data, your phone may route traffic unpredictably — sometimes through the expensive home SIM. Fix: Explicitly set one SIM for data only. Disable data roaming on your home SIM. See our dual SIM guide.
Provider support contacts
If self-troubleshooting does not resolve the issue, contact your provider. Airalo: In-app chat, 24/7, ~10 min response. Yesim: In-app chat, ~20–40 min. Saily: In-app + email, ~15–25 min. Drimsim: Email + in-app, ~30–60 min. Document your issue with screenshots of your settings before contacting support — it speeds up resolution significantly.
Start with a trusted provider to minimize issues.
Try Airalo →