I can not disable the "Easy Mode" on Galaxy On5 and some options are missing in the "Settings" menu.

Samsung Galaxy S5: How to disable the simplified mode in Android 4.4.2 Kitkat:

Method # 1: From the notifications panel

  1. Slide your finger up the screen to open the notifications panel.
  2. Tap speed(1) to go to the easy settings menu.
  3. In Easy Settings, tap Easy Mode.
  4. Press Standard Mode to select it.
  5. Press the Done button.

Easy mode will be disabled and standard mode will be applied to your phone.

(1) added highlights because of the original article has an image instead of text.

Method 2:

From the Easy Settings shortcut in the Home screen
By default, you can find the easy settings in the home screen in easy mode as the application and you can use it to access the menu easy settings to disable easy mode . See the following steps to disable easy mode:
From the main Home screen, swipe from right to left until the Easy Settings shortcut / icon appears, then tap to access the Easy Settings menu.

  1. Tap Easy mode.
  2. Press Standard Mode to select it.
  3. Press the Done button.
    Easy mode will be disabled and standard mode will be applied to your phone.

If, in easy mode, a simpler layout and simple settings menu are provided to you, then in standard mode you have a conventional layout and a more complex settings menu . In addition, in standard mode, you can search and use all the features that belong to this phone, unless you disable them.