Apps have to ask for permission to access the microphone in iOS 7
In a further boost to privacy, it appears that apps will now have to request permission in order to access the microphone. This would prevent a rogue app recording you and sending the data off somewhere without your knowledge.
It’s likely that this will work in the same way as permission to use location data, each app only having to ask once.
(Thanks, @AndreyATGB.)
