I am learning info from https://android.stackexchange.com/tags/insufficient-memory/info, which says too options for moving apps from internal storage to removable SD card.
My Android 4.4.2 is not rooted, so I guess my Android system itself isn’t able to move app to SD card.
According to https://android.stackexchange.com/tags/app2sd/info, which app in Play Store shall I use for my Android 4.4.2? Is Link2SD a good one for mine? I was wondering how to use it? I selected some apps (by starring them), but I don’t know what to do next.