There is no sound in Ios 9data3.

There are the following situations: 1. There is something wrong with the tail plug. When you unplug the headset, the phone will still think that the headset is still connected. 2. The inside of the mobile phone is wet. I haven't played this model of mobile phone. I may not know the detailed operation of the whole body. I don't know if this kind of mobile phone can be switched to headset mode without plugging in headphones, or maybe you accidentally switched to this mode. It is estimated that the latter is more likely.