If you have Huawei P Smart mobile phone, you may have noticed its annoying tendency to kill third party background applications randomly, even those set to be managed manually (Fig. 1).
To fix this you’ll need to follow the steps outlined here. I didn’t have PowerGenie app they mention installed, but I did have something called hwaps. Uninstalling it (Fig. 2) fixes the problem with a phone randomly killing background applications and not starting them on boot.
If you have changed your mind, you can restore hwaps application by issuing the following command:
adb shell pm install-existing --user 0 com.huawei.android.hwaps