Lenovo Android kiosk freezes or shows black screen when switching Ethernet/Wi-FiSolved

Hi @remy,

For this type of Lenovo Android kiosk deployment, the behavior usually comes from a combination of strict Lock Task Mode enforcement and Android system components trying to perform background network or hardware transitions.

For the freezing or black screen during Ethernet/Wi-Fi changes, update the kiosk policy to allow the required system components to run in the background. Go to Policies > Kiosk Lockdown > Android Kiosk Lockdown > Background Apps.

Add these packages:

– com.android.systemui — handles system UI rendering and status-related transitions.
– com.android.networkstack — handles IP assignment and network stack operations.
– com.lenovo.oemconfig.rel — allows Lenovo OEMConfig components to apply hardware-level settings correctly.

Then configure restricted network access under Policies > Kiosk Lockdown > Android Kiosk Lockdown > Peripheral Settings > Network.

Enable:

– Display Network Settings
– Allow users to turn Wi-Fi on/off

This may add a Settings icon inside the kiosk interface, but it is not the full Android Settings app. It opens a restricted network settings screen for permitted connectivity actions only.

For the startup gap, set the kiosk app relaunch delay after reboot to 0 seconds. This helps the kiosk app relaunch immediately after the device boots and reduces the window where users can interact with navigation controls.

For Gboard, use Managed App Configurations to disable the Gboard Settings icon. This prevents the keyboard from becoming a shortcut into device settings.

For factory reset prevention on Lenovo devices, deploy the Lenovo OEMConfig app and configure the relevant hard reset restrictions, including blocking factory reset and ADB update options from the recovery path, where supported by the OEM firmware.

Regards,
Sienna Carter
Hexnode UEM