Android SDK Upgrade Notice

Dear Customer,

ZOLOZ upgraded the SaaS Android SDK to version 2.2.1 on July 13, 2026. This upgrade includes a main SDK update and an optional update for the nfc_cnid extension package. The minimum supported version for nfc_cnid and related components has been raised from Android API 19 (Android 4.4) to API 21 (Android 5.0). Please review the corresponding content based on your project's actual integration status.

Upgrade Overview:

To provide you with a superior and more efficient service experience, we are upgrading the Android SDK to version 2.2.1, and releasing a new version of the nfc_cnid extension package (optional integration).

Integration Scenarios:

• Customers who need to use the new nfc_cnid features and proactively integrate the latest nfc_cnid extension package will need to adjust the project's minimum API level from 19 to 21.
• Customers who do not use nfc_cnid features do not need to integrate this extension package or be concerned about this change. Their project API level can remain at API 19.
• Customers who have already integrated the previous version of the nfc_cnid extension package and choose not to upgrade the SDK for now can continue using the previous version without adjusting the API level. The previous extension package is not affected by this main SDK update.

Action Required:

To ensure the project can compile and run properly, when setting the minSdkVersion parameter in app/build.gradle, change the value from 19 to 21. Otherwise, the build will report a manifest merger failed error and the build will not pass. Devices running Android 5.0+ are unaffected, while Android 4.4 and below are no longer supported.

The error message looks like: ses-sdk:minSdkVersion 19 cannot be smaller than version 21 declared in library [com.zoloz.android.build:nfc_cnid:x.x.x]

** Please contact ZOLOZ's technical support team for assistance if you have any further questions, or email: help@zoloz.com