Step 1
Select the travel eSIM for data
Choose the travel eSIM for mobile data and make sure the line is turned on. No manual APN setup is needed.
Mobile Data
Travel eSIM
APN settings
Automatic. No manual setup needed.
Start here
Troubleshooting Connectivity
Complete these four steps in order. Device articles below explain the exact paths for iPhone, Samsung, Pixel, and Motorola.
Step 2
Set 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
Turn automatic network selection on
Turn Automatic Network Selection on. Only choose a network manually if automatic selection fails to connect.
Network Selection
Automatic ON
Use manual selection only if automatic selection fails to connect.
Step 4
Restart the phone
Power off or restart the device, wait for the SIM settings to reload, then test a simple website before opening data-heavy apps.
restart device
AirplaneWait 30sPower on
No manual APN setup needed
APN settings are automatic. Do not manually enter data00.telnyx; it is no longer needed and can cause service instability.
Helpful articles
Pick your device.
Start with the guide that matches your phone. Check install status, mobile data selection, roaming, and automatic network selection first. Use manual network selection only if automatic selection fails.
iPhone
Connection / 5 min
Fix connection on iPhone
Use this checklist when your iPhone shows a travel eSIM but mobile data is slow, stuck, or not loading.
Open guideiPhone
Install / 4 min
Install on iPhone
Install your travel eSIM on a iPhone using a QR code or manual activation details, then leave the line ready for arrival.
Open guideSamsungSamsung
Connection / 5 min
Fix connection on Samsung Galaxy
Use this checklist when your Samsung Galaxy shows a travel eSIM but mobile data is slow, stuck, or not loading.
Open guideSamsungSamsung
Install / 4 min
Install on Samsung Galaxy
Install your travel eSIM on a Samsung Galaxy using a QR code or manual activation details, then leave the line ready for arrival.
Open guidePixel
Connection / 5 min
Fix connection on Google Pixel
Use this checklist when your Google Pixel shows a travel eSIM but mobile data is slow, stuck, or not loading.
Open guideiPhone
Network / 3 min
Change network on iPhone
Keep automatic network selection on for your iPhone. Only try a local network manually if automatic selection fails to connect.
Open guideCommon questions
Quick answers.
I landed but my eSIM is not connecting. What should I check first?
Set mobile data to the travel eSIM and set roaming for your country. Turn Automatic Network Selection on. Only choose a network manually if automatic selection fails to connect. Then toggle airplane mode for 30 seconds. APN settings are automatic. Do not manually enter data00.telnyx; it is no longer needed and can cause service instability.
Should I turn off my primary SIM?
You can keep it on for calls, SMS, and login codes, but turn off data roaming on your primary SIM if your home carrier charges roaming fees.
Can travel eSIMs receive SMS verification codes?
Travel eSIM plans are data-only unless a plan clearly says otherwise. Keep your primary number active if you need bank codes, carrier calls, or Wi-Fi Calling.
Can I move an eSIM to another phone?
Contact support before moving your ZEN eSIM to another phone or deleting an active eSIM.