The front screen with the clock somehow got filled with dust or lint from my pocket, which sucks because I can't read the time when the light isn't on, because the sun reflects off of the dust.
Sometimes it will turn itself off silent.
The reception sucks in some places, but it's good overall.
I like the phone for the most part, good camera.
Voice control and such are a little hard to master.
Overall I like it, because it's taken a beating and is still kicking.
Easy to get new ringtones.
When you press and hold "*" button, the ringmode turns to silent (same button to switch it back). That's probably what causes your phone to go silent.
I think he's saying he sets it to silent and it goes back to not being silent on its own. At least his doesn't think it's always charging...