Does the Nexus 4 support HD Voice (AMR-WB)?

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Nov 13, 2012
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Anyone know definitively whether or not the N4 supports HD Voice (AMR-WB)?
I recently switched to it (on TMobile) - and have seen mixed signals - Tech specs: Google Nexus 4 | Support
used to say it supported it, now it doesn't (I asked recently and the doc got magically updated).

Their 'support' claimed it doesn't have the necessary hardware, not sure I really believe them.

My wife has a GS3 and I can confirm it reports the codec used as AMR 12.2 (NB) when we call - so even if it supports it, it seems like TMobile hasn't white listed it.