@ASIAN
I think so!

@Marcus
what kind of reboot?
but if the problem is from an app, I think that's not necesary.

@generationally
no.
and as pwm said, problem is not lack of sounds/vibration!

@robbie
I'm used to send and receive a lot of SMSs daily, but I had not figured that out!
but the question is what has caused this bug/problem?! an application? which one?