Some apps are built-in and will stay there no matter what, and some need the faster read-write speed of your phone’s internal storage (SD cards are relatively slow), and some are too important for the phone’s functionality to be on something removable.
There are a few ways to force this if you’re ok with the consequences: https://techcult.com/force-move-apps-to-an-sd-card-in-android/
Latest Answers