Understanding New eSIM Policies from Major Carriers in 2025

As of 2025, major carriers have rolled out new eSIM policies that bring changes to how devices connect and switch networks. This evolution affects not just consumers but also developers who need to adapt their apps to these changes.

• eSIM adoption is growing, replacing physical SIMs.
• New policies enhance security and ease of use.
• Developers must update apps to support eSIM features.
• Carrier-specific APIs are critical for eSIM management.
• Understanding eSIM benefits can improve user experience.

eSIMs, or embedded SIMs, are programmable SIM cards built into devices. Unlike traditional SIMs, they don't require physical swapping.

How to Implement eSIM Support

To support eSIM, update your app to interact with the device's eSIM API. For instance:

Use this API to manage profiles and switch networks seamlessly.

With the shift to eSIM, developers must consider API updates in iOS and Android. This involves ensuring compatibility with new carrier policies.

For example, Android's TelephonyManager class now includes methods for eSIM management.

New eSIM policies incorporate advanced security measures. Developers should leverage these by using platform-specific security libraries.

• Ignoring eSIM support in apps: Always check carrier compatibility.
• Not updating APIs: Regularly update to the latest SDK versions.

• Review carrier-specific eSIM guidelines.
• Test apps with eSIM-enabled devices.
• Implement eSIM APIs for better integration.
• Stay informed about SDK updates.

• Apple
• Google
• AT&T
• Verizon

• Apple's eSIM Technology Guide
• Google's TelephonyManager Documentation
• Carrier eSIM Implementation Whitepapers