Sony gets a high rank in our listing of toxic Android vendors as historically it was Sony who introduced the first very effective non-standard background process optimization and opened the Pandora’s box.

It is called Stamina mode and it instantly breaks all background processes and all alarms if enabled.

Solution for users


Never use Stamina mode if you want your phone to do something useful when you are not actively using it.

Try to make your app not battery optimized in Phone settings > Battery > Three dots in the top right corner > Battery optimisation > Apps > your app.

Solution for devs

There is no workaround to prevent background process optimizations in Stamina mode but at least apps an detect that Stamina mode is enabled with the following command.

if (Build.MANUFACTURER.equals("sony") && android.provider.Settings.Secure.getInt(context.getContentResolver(), "somc.stamina_mode", 0) > 0) { // show warning }

The problem is this will only tell if Stamina is enabled, but not if it is currently applied, but we can assume it is when not charged and battery is under X% (TBS)


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