A few of the apps. I installed automatically showed up in the menu, but now it seems like the app menu (the grid button from the home screen) is full and doesn't want to put any more app. icons on it. I can locate the apps, but even some of the pre-installed ones such as google maps are not on this menu. The app. menu doesn't let me scroll down or sideways to see more either

any ideas? phone is an LG: Optimus V