Apple prove on a mobile phone, signal loss typically occurs when your hand attenuates the most sensitive part of the antenna. Apple released few test videos to prove iPhone is not the only smart-phone that faces antenna related issues (signal strength). Check below photos and videos how Nokia, BlackBerry, HTC and Samsung all mobile phones drop signals when handling.
iPhone 4: In our tests, iPhone 4 dropped from 3 bars to 1 bar when held in a way that attenuated the signal.
BlackBerry Bold 9700: In our tests, the BlackBerry Bold 9700 dropped from 5 bars to 1 bar when held in a way that attenuated the signal.
HTC Droid Eris: In our tests, the HTC Droid Eris dropped from 4 bars to 0 bars when held in a way that attenuated the signal.
Nokia N97 mini: In our tests, the Nokia N97 mini dropped from 7 bars to 2 bars when held in a way that attenuated the signal.
Samsung Omnia II: In our tests, the Samsung Omnia II dropped from 4 bars to 1 bar when held in a way that attenuated the signal.
iPhone 3GS: In our tests, iPhone 3GS dropped from 3 bars to 1 bar when held in a way that attenuated the signal.
Via: Apple Antenna
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