Who has missed the function on the Samsung Galaxy S6 to sort his apps in alphabetical order within the app menu can look forward now. Because this feature has been reintroduced with the update to Android Lollipop 5.1.1.
If you have updated the Samsung Galaxy S6 to the latest firmware, then you can navigate from the Home screen in the App menu. There you will see above right a new icon:
• A-Z Symbol
If you tap this icon, a message appears that warns you. By pressing “ok” the app list is rearranged in alphabetical order. All changes made will be discarded.
If you have confirmed with "OK", then the Apps are now sorted in alphabetical order on the Samsung Galaxy S6. Nice that Samsung cares about the user and has reintroduced this feature in Android Lollipop 5.1.1.