Earpiece problems. Help please asap.

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http://forum.xda-developers.com – On my phone, the power button suddenly started responding less and less, until sometimes I have to press power 10 Times for screen to turn on. Last thing I did was to flash India V20G baseband, cuz call clarity was low. Now, just after flashing baseband, I'm also having earpiece problems. sometimes works, sometimes doesn't. Calls work on.speakerphone tho. Please help asap. (HowTos)