Just landed in Paris and your phone shows bars… but no data? You’re not alone. Airports are the most common place for connectivity issues because your phone is switching networks, lines, and roaming settings all at once.
This quick checklist is designed to get you online in minutes—whether you’re using an eSIM or a physical SIM. And if you want to avoid the “airport Wi-Fi lottery” next time, setting up a Molahop eSIM before you fly is the easiest way to land connected (you can install it on Wi-Fi at home, then turn it on after landing).
First: 60-second quick checks (works most of the time)
1) Turn Airplane Mode ON → wait 10 seconds → OFF
This forces a clean reconnection to the local network.
2) Restart your phone
It’s boring, but it fixes network handoff issues surprisingly often.
3) Confirm you’re using the correct data line (Dual SIM / eSIM)
If you have two lines (eSIM + physical SIM), your phone may be trying to use the wrong one for data.
- iPhone: Settings → Cellular → Cellular Data → select your travel eSIM line
- Android: Settings → Network & Internet → SIMs → Mobile data → choose your travel eSIM line
Most common cause at airports: roaming is OFF (turn it ON for the travel eSIM)
4) Enable Data Roaming (only on the travel eSIM line)
Many travel eSIMs require data roaming to connect to partner networks.
- iPhone: Settings → Cellular → select eSIM → Data Roaming ON
- Android: Settings → Network & Internet → SIMs → select eSIM → Roaming ON
Tip: If you don’t want your home SIM to roam (and charge you), keep roaming OFF on your physical/home SIM and ON only for the travel eSIM.
If you still have no data: fix network selection
5) Set Network Selection to Automatic
In airports, your phone sometimes locks onto a network that won’t authenticate your plan.
- iPhone: Settings → Cellular → select eSIM → Network Selection → Automatic ON
- Android: Settings → Network & Internet → SIMs → select eSIM → Network operators → choose Automatic
6) If Automatic doesn’t work, manually try another network
Wait ~30 seconds after selecting a network before switching again.
Speed/connection issues: 5G can be the culprit
7) Temporarily switch from 5G to LTE/4G
In some locations, 5G can be unstable right after landing. LTE is often more reliable for initial setup.
- iPhone: Settings → Cellular → select eSIM → Voice & Data → LTE
- Android: Settings → Network & Internet → SIMs → Preferred network type → LTE/4G
APN fix (advanced, but powerful)
8) Reset APN / Mobile network settings
If your phone has the wrong APN (access point name), you can have signal but no data.
- iPhone: Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings
- Android: Settings → System → Reset options → Reset Wi-Fi, mobile & Bluetooth
Note: This removes saved Wi-Fi passwords. If you can, do it after you’ve saved your hotel Wi-Fi details.
Make sure your eSIM is actually active
9) Check the eSIM status
- Is the eSIM line turned on?
- Is it set as the data line?
- Is the eSIM plan installed correctly?
10) If you installed the eSIM at the airport: reinstall on stable Wi-Fi
Sometimes installation fails silently on congested airport Wi-Fi. If your provider allows it, reinstall using a stable connection (hotel Wi-Fi is best).
Last resort (but very effective)
11) Reset network settings + reselect the eSIM for data
After a reset, re-check:
- Cellular Data = travel eSIM
- Data Roaming ON for the travel eSIM
- Network Selection = Automatic
- Preferred network = LTE
Prevent this next time: land connected in 30 seconds
If you don’t want to troubleshoot at arrivals, do this before you fly:
- Install your travel eSIM on Wi-Fi at home.
- Save a screenshot of the setup instructions and your QR code (if you received one).
- After landing, turn on the eSIM line and enable data roaming (for that eSIM line).
If you want the simplest option, set up a Molahop eSIM in advance so your data is ready when you touch down.
FAQ
Why do I have signal but no internet?
This is usually a roaming/APN/network selection issue. Your phone is connected to a tower, but your data session isn’t authenticated correctly.
Can airport Wi-Fi cause problems?
Yes. Congested Wi-Fi can interrupt eSIM installation or slow captive portals. If you need to install/reinstall, hotel Wi-Fi is more reliable.
Should I keep my home SIM on?
You can keep it on for SMS, but keep data roaming OFF on your home SIM to avoid surprise charges. Use your travel eSIM for data.
Final takeaway
Most “no data after landing” issues are fixed by choosing the correct data line, turning on roaming for the travel eSIM, and switching to automatic network selection (or LTE). Use the checklist above and you’ll be online fast—then get on with the fun part: exploring Paris.