1. make sure the volume setting is not "Mute" or "Vibrate"
Yes, I'm sure, it's not any one of it.
2. clean boot and see if it works..
蝦蜜係 clean boot ??? reboot?

if both are not working, it might need to be repaired.
Send it to repair is my last choice...

Thanks very much for your help.
Thanks,
jack


























































































