How to sort App icons in alphabetical order

If you open the Settings app, then go to General>Reset>Reset Home Screen Layout, all of your downloaded apps will be put in alphabetical order. The built-in apps, however, will be returned to their original positions on your first screen, so if you want those to be in alphabetical order you will need to move them manually.

There's not currently a way of doing this other than to manually move them on your own. You can submit feedback to Product Feedback - Apple