Android OS goes to standby even if there is some Qt activity

There is a problem when deploying Qt applications on Android.

Android device does not go to standby if there is some activity.
When deploying pure C++ application using Qt, Android device does not consider this as an "activity" and it may go to standby. Meaning that, if you're connected to a BLE device for instance monitoring some data through BLE, after a few seconds, the Andoir device goes to standby, BLE connection is lost and your application gets messed up then...

Could Qt lock the device not to go to standby automatically or on demand?

Is there any workaround?