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[Roflcopter]

ACR call recorder is working perfectly for xperia M..  install it from play store and disable noice suppression in call settings for recording voice both ways( ie settings -> call settings -> untick Noice suppression )

download link :

http://play.google.com/store/apps/details?id=com.nll.acr

[immi]

After very long research I could use call recording by following your note. Thank you. God bless.