Google Play
Open the operators listing on Google Play, install, and open. The app handles updates through the Play Store.
Most regulated operators publish a mobile app on Google Play and an APK on their own site. This page reads the install path, the permissions, and the small set of things that go wrong.
If the operator publishes on Google Play, install from there. If the operator is not on Google Play (common in India for real-money skill games), install the APK from the operators site.
Open the operators listing on Google Play, install, and open. The app handles updates through the Play Store.
If the operator is not on Google Play, the APK is hosted on the operators site. Enable install from unknown sources for the browser only; disable it after install.
A regulated rummy app needs storage (for the install) and camera (for KYC document capture). Anything beyond that is a red flag for the app review.
Document captures and KYC uploads are written to local storage before they are uploaded. The app should encrypt them at rest.
The camera is used only inside the KYC flow. The app should not request camera access for any other purpose.
The app needs network access for the lobby and the table. Background data should be off when the app is not in use.