Samsung X640 Pink Color Cellular Mobile Phone "switch automatically" Questions

I am use samsung corby mate gt-b3310 but some time not open music player. why?i am open music player and mobil switch off. automatic switch on. take it to the service to be resoftated

automatically disconnect the inbound call? No, that will not disconnect the caller. BUT, if you hit the headset button again, it will. If you hit the headset button, you need to hit the switch hook to

automatically and begin the activation wizard. Just follow the instructions on the screen and answer the questions. Just so you know I have an unlocked Iphone..I use my Iphone with Tmobile...All i did