If your phone has this kind of hard reset option and you don't mind losing all of your data, a hard reset can sometimes fix problems that a soft reset can't. It could be an issue with your device's audio settings, the other person's device, or a Skype issue if your Skype audio isn't working — for example, if you're on Skype and you can't hear the other person or they can't hear you.

If this happens during a call, you and the person on the other end will almost certainly need to fix the problem. Remember that if the audio isn't working, you may usually speak with the other person via Skype instant messaging about your plans to fix the problem. If you're on a video call and the sound isn't working, you might be able to tell the other person what's wrong without saying anything. You can also use an alternative, such as email, to discuss the issue. not going to happen.

Use Skype's built-in echo call tool to check if your microphone and speakers are working. You'll need to end an existing call to do this. Make a call to the Skype 'Echo / Sound Test Service' contact from your contacts menu. You should be asked to record a test message and then listen to it. If this works normally, your audio settings appear to be in order, and the problem could be with the person on the other end of the line

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