No outgoing sound

That means your microphone has in fault or lost its capacity to gain the sound. So you have to change your microphone. Thanks

check with service centre

You may have your microphone muted. During voice calls, if you select Options - Mute, that will be the effect.

Try selecting Options - Mute during a call, and look for an On/Off selection.

first if your phone have a voice recording option check that your **** is working properly or not by recording any voice for 5 to 7 secs. If it is probable that mic is working properly say you listen the recorded voice than you might have muted the voce increae it by side bottons if present or from phone's sound settings

Your MICROPHONE is not working.Please get it replaced

After receiving a message with sound, push the button on the side that activates voice dialing. It sometimes takes activating it twice, but it will turn the sound back on.

You can mute outgoing voice during a call by tapping on both volume buttons and tap them again to un-mute.possible you are experiencing this . i did

voice not hearable on incoming calls and outgoing calls

chek sound settings and sound level. thts very common. no problm with phn

Turn up the volumes on Ear piece -during- a call (on the side of the phone <===>) and on the speaker at any time. The joy stick does it I think.