Hi, I recently purchased my first android phone, Xperia J. After a month of using it, I noticed a stuck pixel, just a tiny one and I just disregarded it as it does not conflict with my use of the phone. But just last month there is a weird thing I experienced, whenever I play a music using any earphone and after a few hours of playing, you will suddenly hear a long beep and the phone will hang up and will not respond quickly, it's really laggy. I can't do anything but to restart it. Sometimes, it appears even in a short period of music playback. Restarting the phone solves the problem.
Another issue is when I open/close the camera application, whatever camera app I use, I always hear a tick sound from the speaker or earphone (if plugged). This is not annoying but I just want to know if this is normal or software/hardware problem. Btw, I also tried installing other Music player application, using other earphones, plugging it to speakers but it still happens. I think there's something wrong with the phone hardware.
