How to test the volume on your iPhone receiver
Summary: Using the iPod with speaker, you can far exceed the normal volume limits heard on iPhone receiver during phone calls.
If you suspect that the receiver is faulty, this is one way to know if you can crank it up (even if your phone calls are still soft). Although this doesn't fix the problem... at least you know the receiver "works"
Test it yourself:
(1) Open iPod and start song (with sound on speaker)
(2) Cover the speaker on lower left hand corner with finger
(3) Put phone up to ear and increase volume using side volume controls. You'll notice how LOUD it gets in the receiver (much louder than an iPhone phone call gets)
If you suspect that the receiver is faulty, this is one way to know if you can crank it up (even if your phone calls are still soft). Although this doesn't fix the problem... at least you know the receiver "works"
Test it yourself:
(1) Open iPod and start song (with sound on speaker)
(2) Cover the speaker on lower left hand corner with finger
(3) Put phone up to ear and increase volume using side volume controls. You'll notice how LOUD it gets in the receiver (much louder than an iPhone phone call gets)