Hi, I have follow the 4 steps and now my question is about the proper lcd screem. In my case the touch "cristal" is broke do I have to buy all the back side of the camara (with the keys, I mean) o can I take off only the "cristal". I saw in Aliexpress taht they sell all the piece or the "cristal" alone. I do not know how to take out the broken cristal from the back piece. please can you help me. Sorry by my english I am Spanish and I do not now if I did explain properly. Thank you.