PWC Realtor
Well-known member
It's not software, that just doesn't make sense. Many claim not to have it. By shaking do you mean rattle? They all have that... Unglittery back? Weird...
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It has to do with the interactions between the cell radio and the earpiece speaker. This is my hypothesis because the earpiece background noises are different when making a call over the cell network and making a call over Wifi via Groove IP.
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