Step 1
Select the travel eSIM and set APN
Open iPhone Mobile Data settings, choose the travel eSIM, and set Cellular Data APN to data00.telnyx.
Mobile Data
iPhone
Start here
Troubleshooting Connectivity
Complete these four steps in order for iPhone. The device article below explains each setting path in detail.
Step 2
Set Data Roaming
Open Settings > Mobile Service or Cellular > your travel eSIM > Data Roaming. United States: keep Data Roaming off. All other countries: turn Data Roaming on.
United States
Roaming OFF
All other countries
Roaming ON
Step 3
Choose a network manually
Open Settings > Mobile Service or Cellular > your travel eSIM > Network Selection, turn automatic selection off, pick an available local network, and test data.
Network Selection
Automatic
Local network 1
Local network 2
Step 4
Restart the phone
Hold the side button and a volume button, slide to power off, wait 30 seconds, then turn the iPhone back on. Then test a simple website before opening data-heavy apps.
restart device
AirplaneWait 30sPower on
AppleNetwork3 min
How to change eSIM network on iPhone
Manually choose a local network when automatic selection leaves your iPhone stuck on weak signal or no data.
01
When to use manual network selection
Manual selection helps when the phone camps on a weak partner network, gets stuck after crossing a border, or shows signal without usable data.
- Use it after confirming the plan covers your country.
- Use it after toggling airplane mode.
- Use it when one carrier name appears connected but data does not load.
02
Choose a network manually
- 01Open Settings > Mobile Service or Cellular > your travel eSIM > Network Selection.
- 02Turn automatic network selection off.
- 03Wait until the full list appears. This can take a minute.
- 04Select one available network and wait for the phone to register.
- 05Test a website. If it fails, repeat with another available network.
03
Switch back to automatic
After you find a working network, turn automatic selection back on before you travel to another city or country. Automatic selection helps the phone reattach as coverage changes.
04
Still stuck
- Recheck Settings > Mobile Service or Cellular > Mobile Data and confirm mobile data uses the travel eSIM.
- Recheck Settings > Mobile Service or Cellular > your travel eSIM > Data Roaming. Data roaming should be OFF in the United States, and ON in every other country.
- Restart the phone if the carrier list does not refresh.
- Send support your device model, destination, plan, and a screenshot of the network list.
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