I'll show you how to fix your eSIM not working on iPhone with this quick guide. If you're experiencing activation issues, no service, or connectivity problems with your eSIM, this tutorial will help you fix them. We’ll walk you through checking carrier compatibility, resetting network settings, reactivating your eSIM, and updating iOS to ensure a connection. Whether your eSIM isn’t detected or mobile data isn’t working, these proven fixes will get your eSIM back online.