iPhone home screen not showing after erasing network and content settings
If you have not powered off the phone recently, try that. A reboot often works wonders. Also what happens if you swipe right to left, do you get other apps? Are there 2 or more dots centered just above the dock? What I am getting at is it may be that you just have a blank home screen and all your apps have somehow moved to other screens. Swiping might reveal them and allow you to move them back.

Wiping just the network setting should affect nothing else. I've done it many times and never an app out of place.

Hopefully you have backed up your phone recently, you may have to restore from backup.