TouchWiz OS- definitely laggythen they start to magically slowdown
my m31 went haywire in front of my eyes. One moment it was working and next on endless reboot. Just 2 months after warranty got over. I guess it's motherboard problem or may be last security update few days back.My Samsung M31 bought in 2020 is quite disappointing as the battery has shown marked deterioration after 14 months. My previous Samsung were much better quality.