Android SIM Manager Adds Manual Carrier Settings for eSIM Transfer for Developers

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📝 Key Points of This Article

• Analysis of the in-app code for the Android “SIM Manager” app update D.2.1.862659810 has revealed the addition of descriptions regarding a manual configuration feature for “eSIM Transfer Carriers.”
• This is not a feature intended for general users, but rather a tool for developers to use when verifying eSIM transfers.
• There is a possibility that carrier support for Android’s eSIM transfer feature will be expanded in the future.

It appears that a manual configuration feature for “eSIM Transfer Carriers” has been added to “SIM Manager,” the system app for SIM management on Android devices.

Following an analysis of the in-app code from the Android “SIM Manager” app update D.2.1.862659810, released on Tuesday, February 17, 2026, descriptions related to a manual configuration feature for “eSIM Transfer Carriers” were discovered. However, this manual setup for “eSIM Transfer Carriers” is not a feature for general users; it is strictly a functionality for developers to use when verifying eSIM transfers.

<string name="carrier_list_title">eSIM Transfer Carriers</string>
<string name="carrier_list_description">Click on a carrier to edit. Carriers added here will override any overlays and configs.</string>
<string name="carrier_list_description_empty">Add a new carrier from the menu in the top right. Carriers added here will override any overlays and configs.</string>
<string name="carrier_name_title">Carrier Name</string>
<string name="carrier_id_title">Carrier ID</string>

The newly added in-app code includes the title “eSIM Transfer Carriers” and specific instructions such as “Add a new carrier from the menu in the top right. Carriers added here will override any overlays and configs,” indicating that this is a verification feature implemented by design. Specifically, it works by allowing developers to manually enter a “Carrier Name” and “Carrier ID” to add to a list, causing the system to apply those settings with higher priority than the default carrier configurations it normally holds.

Typically, Android’s eSIM transfer functionality operates based on the support status and configuration information (Carrier Config) of each individual carrier. However, by using this newly added “eSIM Transfer Carriers” feature, it becomes possible to simulate a supported state and verify behavior even for carriers that have not yet received official configuration files. This is expected to enable developers at Google and telecommunications carriers to test eSIM transfer processes without having to wait for server-side configuration changes.

As such, general users should have no occasion to use the “eSIM Transfer Carriers” feature added to the “SIM Manager” app this time. Nevertheless, it is undoubtedly an important feature for enabling more carriers to smoothly adopt Android’s eSIM transfer functionality, which ultimately expands the potential for wider carrier support for Android eSIM transfers in the future.

“SIM Manager” App Link