[vetinari]

In android, radio stack is chipset specific and the OS interacts with it via RIL, provided by chipset vendor. It has nothing to do with "has to support a lot more phones than iOS"; in both systems the OS does not touch the audio streams, just routes them from/to input/output.

[kba]

I think you jumbled up the two paragraphs. Nowhere did I suggest that poor audio quality was because Android has to support more hardware.