I can't believe that people still think that "Antenna Gate" was an exclusive Apple problem. Every cell phone on the market had the same problem, including my old Motorola Flip Phone.
Antennagate was absolutely a problem exclusive to Apple's design.
No other phone on the planet dropped calls by placing a single finger on an easily touched tiny spot. None.
Apple even admitted that the 4 dropped more calls than the 3GS. It was a design issue unique to the iPhone 4. (Apple changed the design with the 4S.)
Secrecy was a major factor. Apple could've easily found the problem themselves, if they hadn't insisted on using camouflage cases when testing outside of their labs (where phones were held in jigs). The cases covered the spot and hid the problem.