When a travel eSIM on an iPhone shows bars, LTE or 5G but nothing loads, the usual culprits are the cellular data line and Data Roaming. Either the iPhone is still sending data over your home line, or roaming is off on the travel eSIM, so the eSIM registers on a network but passes no traffic.
Work through the checks below in order. The exact steps for your plan also depend on your eSIM provider's instructions. Apple's iPhone support hub links its own "Learn about eSIM" guide, which shows how to set up a new eSIM or move one from a previous iPhone.
Why does an eSIM show signal but have no internet?
Signal bars only mean the eSIM has registered with a mobile network. Data needs two more things: the iPhone has to route data to that line, and the line has to be allowed to use data where you are.
A travel eSIM often connects through a partner network in your destination. Apple defines the setting this way: "Data Roaming permits internet access over a cellular data network in regions that are not covered by your carrier's network" (Apple Support). With Data Roaming off, the travel eSIM can show signal and still pass no data. Whether roaming should be on or off for each line is its own question, answered in eSIM data roaming on or off.
The other common causes are the wrong line being picked for data, a plan that has not activated or has run out, and provider-side settings.
How do you fix an eSIM that is connected but has no data?
The first three checks are settings: the travel eSIM line is on, Cellular Data points at it, and Data Roaming is on for it. Run them in this order and stop as soon as pages load.
1. Turn on the travel eSIM line. If your iPhone offered the travel eSIM during setup, Apple's travel guide says to "Tap Turn On Travel eSIM" (Apple Support). Then open Control Center: on a dual-line setup, Apple's dual SIM page says to check that both plans are set up and ready to use, and that both carriers appear in Control Center's status bar (Apple Support).
2. Point Cellular Data at the travel eSIM. Apple is explicit: "Your iPhone uses one cellular data network at a time" (Apple Support). If that network is your home line, the travel eSIM sits idle.
To pick the data line, per Apple's travel guide: "Open the Settings app." "Tap Cellular, then tap Cellular Data." "Select which line you want to use." You can choose "Travel eSIM Only or Travel eSIM and Current eSIM". With both lines on, the travel eSIM carries data, but the home line can still incur roaming fees.
3. Turn on Data Roaming for that line. From Apple's roaming page:
- Single SIM or eSIM: open Settings, tap Cellular or Cellular Data, turn on Cellular Data, then tap Cellular Data Options and turn on Data Roaming.
- Dual SIM or Dual eSIM: same path, but tap the travel eSIM's number before Cellular Data Options, so you change the right line.
If the status bar shows No Service or SOS only, Apple's advice is to make sure Data Roaming is on.
4. Toggle Airplane Mode or restart. As a general troubleshooting step, not one from Apple's pages above, switch Airplane Mode on and off, or restart the iPhone. It is a quick reset after changing line and roaming settings.
5. Check the plan itself. Open your eSIM provider's app or account and confirm three things: the plan has activated, it has not expired, and it has data left. A plan with no data left may still show signal bars.
If the provider lists APN details for the plan, enter exactly what it lists. If it lists none, leave the APN alone.
6. Contact the eSIM provider. If the line is on, data and roaming point at it, and the plan is active with data left, contact the provider that sold the plan. Apple's dual SIM page also says to contact the carrier if it still does not work. For the iPhone side, Apple's support hub has a "Still need help?" route ("Tell us more and we’ll guide you to a solution.") and Apple Communities, a place to "Find answers, ask questions, and connect with other Apple users" (Apple iPhone Support).
Whether your iPhone can take a third-party eSIM is a question for your home carrier: check with them before you travel.
How can you confirm data is going through the travel eSIM?
First confirm that Cellular Data points at the travel eSIM (step 2), then turn off Wi-Fi, or the test measures the hotel network. If the check below loads, cellular data is working, and the result shows the network and location your traffic exits from. An IP lookup alone does not prove which line carried the traffic; the Cellular Data setting does.
What does your IP reveal right now?
Don't expect the location to match the city you are standing in. Travel plans often route traffic through another country or region, so the IP can show a country you are not in. On its own, that is not a sign of a fault. eSIM IP routing and "local" plans explains why some sites then show the wrong country.
What about Android phones?
Android phones have similar settings, usually in the SIM or mobile network menu: a toggle for each line, a choice of which SIM carries mobile data, and roaming per SIM. Labels vary by manufacturer, so follow the order above and your eSIM provider's Android instructions for the exact menus.
What should you change when you get home?
Depending on the country or region, the iPhone may turn the travel eSIM off automatically. If it does not, go to Settings > Cellular, make sure "Turn On this Line" is on for your home line, and turn off travel lines you no longer use (Apple Support).
Where do VoidMob travel eSIMs fit?
The VoidMob travel eSIM catalog covers 180+ destinations, and most plans are data only. VoidMob: mobile proxies on real 4G/5G devices, non-VoIP SMS verification and eSIM.
Each plan shows its exit, a country or a region, before you pay. That tells you roughly where the check above should place you: the result can show a country you are not in, and it need not name the plan's exact exit. Where a plan supports top-ups, a top-up adds data to the same installed eSIM with no reinstall, which covers step 5 when the data has run out. To size a plan before you buy, use the Travel Data Calculator.
Where is the data roaming setting on iPhone?
Settings, then Cellular or Cellular Data, then Cellular Data Options, then Data Roaming. With two lines, tap the travel eSIM's number before Cellular Data Options so you change the right line.
Do I need APN settings for a travel eSIM?
Only if your eSIM provider lists APN details for the plan. If it does, enter exactly what it lists. If it lists none, leave the APN alone and run the line, data line and roaming checks first.
Should I restart or reset network settings?
A restart or an Airplane Mode toggle is a quick general step. Do it after you fix the line, data line and roaming settings. Ask your eSIM provider before trying anything heavier, and do not delete the eSIM: getting it back depends on the provider.
How do I make sure the right line is used for data?
Open Settings, tap Cellular, tap Cellular Data and select the travel eSIM. The iPhone uses one cellular data network at a time. If you keep the home line on as well, it can still incur roaming fees.
Who do I contact if nothing works?
Contact the eSIM provider that sold the plan first, since it can see whether the plan activated and has data left. For the iPhone side, use Apple's "Still need help?" route or ask in Apple Communities.
Travel eSIMs that show their exit before you pay
Data plans for 180+ destinations, with top-ups where the plan supports them.