Problems with the SIM card holder slot tray
I was using a nano sim in my Nexus 4, using an adapter. When removing the adapter to go back to a normal micro sim, i think that I damaged the internal tray: after that I got the error "sim not found" from time to time in the phone, and after a while the inserted sim was not recognised. I have tried with several cards, all the same problem.
What is the procedure for replacing the internal sim card holder? I found some in ebay, and if not very complex, I will try to fix it myself.
Thanks in advance.