A locked device (not SIM-free) cannot use SIMs/eSIMs from other networks.
If your device is locked to a specific carrier, you can only use that carrier’s service on your phone. This means you will not be able to use any eSIM, including ours, other than the one provided by your original carrier.
In that case, we suggest you order our travel pocket WiFi instead.
✿Please also see: How do I check if my device is locked or SIM-free?