i dont get airplay option on my iphone 4

All of the directions I read, forgot to mention something important --

You must be connected to wi fi before you can see the Airplay logo.

Problem solved! The apple guys at best buy suggested that my Belkin N+ router from 2009 was too old and was the cause of my ATV problems. I was looking for a range extender anyway, so instead I just bought the most recent Netgear 900 series wireless router. It solved all of my problems. Now my 4S (and our other apple devices) immediately picks up both of my ATVs com anywhere in the house. Such a simple solution....apple should build it into their materials

Just got off the phone with support for Iphone 4s (IOS 7) . The setting for the airplay can be reached by swiping up from the bottom when your in the music application and the icon your are use to seeing in the music app will display.

I had same issue. I slid up quick settings screen and turned off WiFi, then turned WiFi back on. Airplay option appeared. (ios 9.5 on 4s)

This thread is 2 years old?!?