Call Simulator Permissions Guide

Android restricts background launch, overlay display and lock-screen behavior. These settings help scheduled simulated calls work more reliably.

Overlay permission

Allows the simulated call screen to appear above other apps.
Required by many Android devices for call-style display.
Can be disabled later in Android system settings.

Lock screen and background launch

Helps the simulated incoming call appear when the phone is locked.
Manufacturer-specific settings may be required on Xiaomi, Huawei, OPPO, vivo and Samsung devices.
Auto-start settings can improve scheduled call reliability.

Battery optimization

Strict battery management may stop timed calls from triggering. Allowing background activity helps countdown and scheduled features run reliably.

Download

Install the APK and follow the in-app permission guide step by step.