Common Questions
What is AeSIM?▼
AeSIM is an independent knowledge platform providing accurate, unbiased information about eSIM technology and European travel connectivity. We have no commercial relationships with any carrier or eSIM provider.
How do I know if my phone supports eSIM?▼
Check Settings > Cellular for an "Add eSIM" or "Add Cellular Plan" option. You can also check your device manufacturer's specifications page. Most flagship phones from 2018 onward support eSIM.
Can I keep my home number while using a European eSIM?▼
Yes, on Dual SIM-capable devices. You can keep your home physical SIM active for calls while using an eSIM profile for data. This is the optimal configuration for most travelers.
What's the most common eSIM activation mistake?▼
Forgetting to enable Data Roaming after installation. The eSIM profile installs successfully, but without Data Roaming enabled in device settings, it cannot connect to the network.