How to use your primary SIM together with a travel eSIM
Keep your regular number active for calls or SMS while using an eSIM for cheaper travel data.
You want mobile data from the travel eSIM, but still need your usual phone number for banking codes, calls, or messages.
Leave your primary SIM on for calls and SMS, set mobile data to the travel eSIM, and keep data roaming off on the primary SIM to avoid roaming charges.
- Install and label the travel eSIM so you can distinguish it from your primary SIM.
- Set calls and SMS to your primary SIM if you need to receive messages on your regular number.
- Set mobile data to the Skyalo eSIM.
- Disable data roaming on the primary SIM unless your home carrier roaming package is intentional.
- Your phone supports dual SIM or eSIM plus physical SIM operation.
- Mobile data is assigned to the travel eSIM.
- The primary SIM is not using data roaming by accident.
- Receiving SMS can still depend on your home carrier's roaming rules, even when mobile data uses the eSIM.
- If you do not need calls or SMS, you can temporarily turn the primary SIM off to reduce roaming risk.
Step-by-step fix
4 min read
- 1
Install and label the travel eSIM so you can distinguish it from your primary SIM.
- 2
Set calls and SMS to your primary SIM if you need to receive messages on your regular number.
- 3
Set mobile data to the Skyalo eSIM.
- 4
Disable data roaming on the primary SIM unless your home carrier roaming package is intentional.
- 5
Enable data roaming on the travel eSIM if the Skyalo plan instructions require it.
- 6
Turn off cellular data switching if your phone keeps moving data back to the primary SIM.
- Your phone supports dual SIM or eSIM plus physical SIM operation.
- Mobile data is assigned to the travel eSIM.
- The primary SIM is not using data roaming by accident.
- Banking or verification SMS still arrive on the primary line.
- Receiving SMS can still depend on your home carrier's roaming rules, even when mobile data uses the eSIM.
- If you do not need calls or SMS, you can temporarily turn the primary SIM off to reduce roaming risk.
- Banking or verification SMS still arrive on the primary line.
- If you do not need calls or SMS, you can temporarily turn the primary SIM off to reduce roaming risk.