[AC Question]

I had to enable my facebook account got it back but the app isnt on my mobile phone what do I do?

[hallux]

Have you tried going to the Play Store to locate and install the app? If it says it's installed, go to the app drawer on your phone to see if it's there. If not, go to the app manager on your phone (you don't say what phone you have so I'll say based on my Nexus 6p) by going to Settings then Applications. Swipe from right to left until you see the disabled apps and see if it's there. If you've found it there, tap on it, then select the button to enable the app.