This is on Amazon, it includes:
  
  Front digitizer and screen
  Back glass
  Tool kit
  
  http://www.amazon.com/For-iPhone-White-Replacement-Part/dp/B006915SF6/ref=sr_1_1?ie=UTF8&qid=1374845077&sr=8-1&keywords=iPhone+4s+replacement+digitizer+LCD+screen
  
  Does anyone know if this is all I need to replace both screens?
  См. статью: I'm replacing my iPhone screen. Is this all I need?