App Freeze is a feature of Mobile Security’s System Tuner that can force stop selected running apps and clear memory.

Just-a-Phone Mode and App Freeze in System Tuner feature was removed on Android 10 and above due to OS incompatibility.

Force Stop Apps with App Freeze

  1. On the main screen, tap System Tuner.
  2. On the Memory tab, tap Optimize.
  3. Wait for the optimization to finish.
  4. Tap Open App Freeze.
  5. Select the apps you want to stop.
  6. Tap Stop Apps.
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