If you ported a non-AT&T device to our network, you can try the following solutions: This could also be due to the shutdown of our 3G network. What ZIP code are you located in? We can check the towers in your area.Are you having any issues with phone calls or data usage? This could help us pinpoint other possible causes of the error.If these tips aren't effective for you, we'll need a little more context in order to proceed. go to Settings > System > Advanced > Reset options > Reset network settings. This will force a connection to the nearest tower. Try turning Airplane Mode on for a few seconds then off again.If the volume is fine, double-check the menu next to Speakers and see if there's another option to pick from, and then try the sample sound again.We'll be happy to assist you with your texting concerns are a few possible fixes we can try here.If you don't hear anything when you play the sample sound, make sure your speakers or headphones are turned all the way up (some headphones have physical volume buttons) and that the on-screen settings are at 10.You should hear sound in your headset or speakers. To check the sound in Skype to make sure that it's using the right speakers, select Test audio under the Speakers option.Finally, unplug the microphone and then reattach it. If there aren't other ones to pick from, make sure the microphone is plugged in, powered on (if it has a power switch), and has batteries (if wireless).If the microphone doesn't work with Skype, select the menu next to Microphone and see if there are any other options you might have the wrong device selected.As you talk, you should see the bar light up. With that setting open, notice the volume area under Microphone.

Skype call ended immediately