@CathyCC Well, the "problem" is a design flaw. ONLY Apple has chosen to put an exposed metallic antenna on the OUTSIDE of the phone. Go find any ham radio operator and ask him what happens to the signal when you change the length of the antenna. Then ask him if a slightly-damp hand in contact with the antenna would change the length.
You (and every other human being) are a bag of impure water. Impure water is a decent electrical conductor.
Bottom line: The iPhone 4 will work fine - as long as you don't touch it. Other phones work fine EVEN IF YOU TOUCH THEM.
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