Hi, I'm experiencing the same problem... I was using Instagram and suddenly all the apps stopped working so I was getting a lot of error messages, then I decided to turn my mobile off. But when I tried to turn it back on it would just display the "sony" screen, then the "xperia" screen, and then the red LED lights on a few times and the mobile switches back off a few seconds before trying to turn on again... I tried removing SD & SIM card but it didn't change anything, I tried the "hard reset" by pressing 10sec the on/off button and the volume + button until it vibrates 3 times... nothing worked. Is it dead ? I let it restarting continuously for 4 or 5 hours, after what it stopped (probably out of battery)...
