The number of eSIM cards you can use depends on the capabilities of your device and the policies of your mobile network operator. eSIM, or embedded SIM, is a digital SIM card that is embedded within your device and can be programmed with multiple mobile network profiles.

Most devices with eSIM functionality are designed to support multiple eSIM profiles, allowing you to switch between different mobile networks or plans without physically changing SIM cards. However, the specific number of eSIM profiles you can have simultaneously may vary depending on the device and its software limitations.

Some devices can support only a single eSIM profile at a time, while others can accommodate multiple eSIM profiles, typically ranging from two to five. It's important to note that not all devices support eSIM functionality, so you'll need to check the specifications of your specific device to determine if it has eSIM capability and how many profiles it can accommodate.

Furthermore, the availability of eSIM service also depends on your mobile network operator. Not all operators support eSIM, so you may need to check with your operator to see if they offer eSIM services and how many profiles they allow.

Overall, the number of eSIM cards you can use is determined by the capabilities of your device and the policies of your mobile network operator, so it's best to consult the specifications of your device and communicate with your operator for accurate information.