iPhone 4 bad Reception Confirmed

By | June 25th, 2010

As the numbers of complaints have been increased regarding the antenna issues of the new iPhone 4, the customers are likely to hold their orders for a while until Apple properly look in to this problem. It started with few customers claiming that when you hold your iPhone 4, the hand blocks the antenna causing a gradual decrease in signals which ultimately leads to a bad reception.

iphone antenna iPhone 4 bad Reception Confirmed

Just to make it clear, iPhone 4 has an antenna at the bottom left hand side of the phone well integrated in to its stainless steel body. Bad reception shows up almost every time you touch your hand on the lower left end and the bottom. iPhone 4 antenna has also been criticized because of its signals maintenance. Ironically, this is what Steve jobs referred to as ‘‘really cool engineering’’ at Apple Worldwide Developers Conference 2010.

iphone 4 antennas iPhone 4 bad Reception Confirmed

Many customers have confirmed the problem by uploading videos on Youtube showing its bad reception. Bad reception issues have gained certain attention but still it’s not sure that the problem is in all the iPhone 4 handsets or just the few? It was the user experience provided Apple a competitive edge, but if this is the new experience that Apple has planned for its customers; it’s not going to work well. The problem is still unanswered by Apple.

Watch the videos below to see the reception problem of iPhone 4:

  • ridgeguy

    The reception problem is not a surprise.

    The iPhone 4 has three antennas. These are slots, or spatial discontinuities in the metal band around the phone. It's been known for a long time that empty spaces in a conductor (aka, “slots”) can radiate RF signals and receive them just the same as the more traditional metallic antenna elements.

    However – if you cover up a slot antenna with an electrical conductor and/or a lossy dielectric material, the radiated RF will be either reflected back to the transmitter (if covered by a good conductor) or absorbed by the covering material (if the material is “lossy” or absorbent in the RF sense).

    The human body is both electrically conductive (full of ionic liquids, or electrolytes) and RF-lossy (called a high loss tangent, which is part of what makes microwaves able to heat stuff). So when you put your hand over the slot antennas of your iPhone 4, you absorb outgoing transmitted RF and you block incoming RF signals.

    And this is consistent with the observation reported by many that a case helps alleviate the problem. Most cases are nonconductive and are non-lossy, or RF-transparent. So they create a small gap between the slot antenna and your hand through which outgoing and incoming RF signals can pass.

    This is pretty basic, simple stuff for RF design engineers. Anybody who designs phones for a living w/should have spotted this.

  • Theextremer_talha

    wow, thank you for sharing your knowledge :)

  • Pingback: Steve Jobs Responds to the Bad Reception Problem of iPhone 4

  • zholy

    Apple is a smart company, and would like to make big money. This is it forces people to buy the latest product approach.Apple limit stock stimulation purchase demand.
    Here is the Apple iPhone 4 Reviews – Not Just Rumour: