Hi. I've used the passcode, it's incovenient coz' it pops out everytime you want to use it. Does it also disconnect voice calls? When should I used passcodes? I tried it because I though if the phone got lost or left for awhile, nobody could see what's inside but I turned it off. What's the best way to protect your phone anyway? Or is locking the SIM better (what's the difference between that and the passcode?)? Suggestions are welcome. Thanks in advance. Gbu.