Can someone confirm if you replace the battery, will it work as before the google battery fiasco? Ie, is the charging on the 4a based on the IMEI number of the phone, or the serial of the battery?

Or is the noice cancelling microphone at the back of the daughterboard also the main microphone?

Do you know where the main microphone is located? There's a microphone at the back of this board, but it's only used for noise cancelling?

Where is the main microphone? Can it be the white circle feature on the speakerbox?