New iPhone 4S: Antenna ‘Death Grip’ Now Slightly Harder

Apple has changed the antenna in the new iPhone 4S thusly that the cellular radio in the headphone derriere select between two antennas, depending on which one is sending or receiving signal best. These two antennas are part of the chromium steel band that wraps close to the sides of the iPhone 4 and the new 4S. On the iPhone 4 this band is break into several antennas so that one piece does Wi-Fi, another does GPS, another does Bluetooth and silence another does cancellated.

Merely on the raw iPhone 4S, the (GSM) cellular antenna is shared out into ii pieces. So if you apply the death grip to attenuate to one tack together of the cellular antenna, the radio will, theoretically, switch to the other while that ISN't organism gripped. So you'll receive have to hold a Double Death Grip (see image) to squelch off cellular service to the new phone completely. That move is commonly seen just on Virtuoso Trek and in favoring wrestling rings.

Only there's more: the modern 4S is a "public phone," meaning that it contains some a GSM radio and antenna and a CDMA radio and antenna inside. Plainly the "antenna band" running around the phone is being cut into smaller and little sections. How this leave impact response/transmission of the various wireless signals is yet to be seen.

"Improving on the innovative stainless nerve external, two-fold-antenna intent of iPhone 4, iPhone 4S is the first phone to intelligently switch 'tween two antennas to send and receive," the press release reads. Actually, the new antenna conception is nothing novel at all–it's just new in consumer handsets. Such "diversity" antenna systems have been used in other types of wireless devices for years.

The network engineer and the antenna engineer I spoke to yesterday later the 4S announcement yesterday both said that the new transmitting aerial design is likely to raise single modest reception gains. One engineer got the crisp impression that the new antenna part of the 4S announcement yesterday was many or so hype than anything else.

These are opinions of line; we won't pass around official judgement on the new aerial system until we're able to test IT in the wild. In tests we performed last twelvemonth, we recovered that non-iPhone AT&ere;T handsets (BlackBerry, for united) could asseverate voice calls in thin cellular conditions far better than the iPhone 4. We'll be interested to see if the iPhone 4S shows any improvement in call timber and omit rates in similar circumstances. Happening the data side, we'll compare throughput speeds on the iPhone 4 with those on the new 4S. So stay tuned for that.

The other thing that made me skeptical of Orchard apple tree's unexampled antenna system is the special information that came out about IT yesterday. Many a questions remain unanswered. "iPhone 4S now supports twice the download speed with HSDPA of up to 14.4 Mbps and iPhone 4S is a world phone, so both CDMA and GSM customers can now roam internationally on GSM networks," Apple said in the announcement. But the hurry increase to 14.4 mbps level bes throughput is the issue of an upgraded radio chip at bottom the phone, not the leave of the antenna, as Apple seems to suggest.

Also, when Apple talked about the new antenna system and the upper increases yesterday, information technology referenced the GSM parts of the phone. What about the CDMA parts? Does the CDMA radio X adequate 14.4 mbps too? Is the CDMA antenna wrong the phone also split in deuce? If the answer to either of these questions is No, it doesn't bode well for Verizon and Sprint who wish sell the CDMA flavor of the phone. And it goes without saying that the 4S won't flow from on the quickest wireless network in the land, Verizon's LTE meshing.

So regardless of the transmitting aerial inside information and speed boosts, the iPhone still is not a true 4G phone. How much longer do we have to wait?

Source: https://www.pcworld.com/article/477132/new_iphone_4s_antenna_death_grip_now_slightly_harder.html

Posted by: leonreaccurtut.blogspot.com

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