When I go to home screen in settings there aren't any selections for screen grid. Same for apps screen grid. How do I access either so I can change the grid dimensions? I have a new unlocked S24+.
Okay, so to change the grid size you are going to go to settings>home screen>home screen grid> you can't change it a whole bunch though. If you really want to change it a lot, download the good lock Suite of apps from the Galaxy store. It is published from Good Luck Labs which is owned by Samsung.
