A second SIM can keep your usual number available while the Morocco eSIM handles data, but ‘both lines enabled’ does not mean every charge is automatically avoided. Set each line’s role deliberately.
Know what the phone can do
Supported iPhones can use combinations such as a physical SIM plus eSIM or, on eligible models, two eSIMs. Device and regional exceptions apply. Apple says a phone must be unlocked to use two different providers, and only one cellular-data network is used at a time.[1][3]
The eSIM usually supplies data only unless the package explicitly lists voice or SMS. Your home SIM can remain available for its number, but your home carrier may still charge for calls, messages or roaming depending on your plan and settings.[4][1]
Set the lines up for a data-only trip
- 01
Label both lines
Use clear names such as ‘Home’ and ‘Morocco Data’ so that you can recognize which line is selected.
- 02
Set the Morocco line as mobile data
Choose the travel eSIM under Cellular/Mobile Data or SIM preferences when you want to use it.
- 03
Review data switching
Turn off automatic switching between lines if you do not want the phone to use your home line for data when the travel line is weak.
- 04
Control home-line roaming
If you keep the home line active, check its data-roaming and roaming package rules with your home carrier. Disable roaming on that line if you want to prevent it from using a visited network.
- 05
Follow the travel-plan requirement
Some travel eSIMs require data roaming on the eSIM itself. Enable it only on the Morocco line and only as the plan instructions specify.
Apple explains how to select a data line and warns that data roaming can incur charges outside the home provider’s coverage. The supplier documentation for travel eSIMs also says roaming may need to be enabled on the eSIM for service. These instructions apply to different lines, so check the toggle for the correct SIM.[1][2][4]
Calls, SMS and verification codes
Keeping your home line active may allow incoming calls or SMS, but whether they arrive and what they cost depends on your home carrier, plan and local roaming agreement. Wi-Fi Calling may help if your carrier supports it, but it is not a substitute for checking terms. A data-only Morocco eSIM does not automatically carry your home number or receive your home-line SMS.
Sources and further reading
Claims marked with a citation link to the source used for that point. Manufacturer instructions and supplier rules can change; confirm the current instructions for your device and package.
- [1]Apple SupportUse Dual SIM on iPhone
- [2]
- [3]
- [4]eSIM Access DocumentationCommon questions about travel eSIMs