Follow the steps below if the other party you are trying to speak to is unable to hear you during a call using an iOS device on Iridium GO!  

Note: This issue may occur with model iPhone 4 and below using iOS 7.1.2.

Solution: Disable Mute Restriction

1. Go to iOS settings 
2. Select "General"
3. Scroll down and select “Restrictions”
4. Scroll down and select "Privacy"
5. Select "Microphone" 
6. Make sure your microphone is set "On"
• Note:  if it is set to “Off”, this is the reason that outbound audio is not working properly.