2 things...I dont have a contacts icon, and why cant i embed a photo on a Facebook thread?
Need to know where my contacts icon is...and how to embed a photo in a Facebook thread
It's impossible to lose Contacts app, just slowly and carefully check your app drawer again. Anyway, if you really can't find it, you can always download a contacts app from Google Play store. With regards to Facebook problem, try re-installing the app.