My sim reader is a bit on and off, it doesnt read simcards all the time. Ive had a look at it and tried to fix it. I keep getting the 'no sim card installed' error on my screen, but sometimes I can access the mobile settings in the settings app, yet it says NO SIM in the corner. Everything else works fine. Anybody know whats going on or a fix? Is there a way to get rid of the 'No SIM Installed' error... it pops up every 20 seconds or so