If "Add eSIM" is present, your device is likely unlocked for eSIM.
If "Add eSIM" is absent, your device might be locked or not compatible with eSIM.
*eSIM availability may vary depending on country/region and carrier. Please contact your carrier or device manufacturer to confirm that your Xperia device is eSIM-capable.
*Sony Xperia 10 IV eSIM support is only available in Europe. Please contact your carrier or device manufacturer to confirm that your Sony Xperia 10 IV device is eSIM-capable.