The above question about volume wasn't a stupid post. The volume controls are pretty obvious to all. THe above "tech manual" reference does not address the volume for the call. The HTC EVO max volume is simply inadequate. Unlike other phones, it can't be turned up enough, either w/ or w/o a bluetooth earpiece. It seems to be a design failure: inadequate (max) volume
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How to tweek my volume for my hTC Evo 4G?