We already have push-to-talk and audio MMS messages, but leave it to Apple to try and reinvent – and re-patent – their own system. According to a new patent application made in November 2009, Apple envisage a setup whereby audio notes are transmitted via the voice channel rather than a carrier’s data backend server, thus removing one potential point of overload. The outgoing message could be recorded audio or it could be text automatically converted into audio for transmission through the voice channel.








It’s taken them longer than expected, but hot on the heels of their 






