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Death Grip Does Not Affect Verizon iPhone 4?

Death Grip Does Not Affect Verizon iPhone 4?

Posted January 12, 2011 at 12:44pm by iClarified
It looks like Apple has solved the 'Death Grip' issues with the iPhone 4 that led to Antennagate, according to multiple reports.

ArsTechnica tied to replicate the issue both off and on a call.

Ars contributor Chris Foresman reported that bridging the remaining gap on the Verizon iPhone (using the "death grip," he says) did not result in any kind of CDMA signal attenuation. He also placed a call while death gripping and said that there was no noticeable signal loss.


PCMag was only able to get the Verizon to drop one bar when covering all four antenna marks.

Sitting at the demo bar, I managed to knock one bar off of the phone's signal indicator by tightly gripping the phone with both hands, covering all four antenna marks. Just covering the bottom of the phone didn't do it. But the demo room has excellent signal, and attenuation problems really show themselves in fringe signal areas. It'll take a real lab test to see how much Apple has improved the antenna here.

This is good news for those who really experienced the issue with their iPhone 4.

Update:
AnandTech reports that they are still seeing a drop in signal but suggest that new second receive antenna may mitigate hand holding problems that drop calls in low signal scenarios.


As you can see from the pictures below, the good ol' death grip still attenuates signal strength on Verizon. Held normally I was getting a reading of -65 dBm on the Verizon iPhone, but in full on death grip the signal strength dropped to -83 dBm. That's in line with what we've seen on AT&T. You will notice that there are more external antenna segments on the Verizon iPhone compared to the AT&T model. Specifically, there's a new strip at the very top of the phone that previously was a part of the UMTS/GSM antenna. With the Verizon iPhone 4 that strip is actually for a secondary receive antenna. This dual-receive antenna architecture is something that Verizon refers to as antenna diversity and it's a part of Verizon's spec for devices on its network. This is not something that's present on the GSM version of the iPhone 4. It's too early to tell if receive antenna diversity will mitigate the hand holding problems that drop calls in low signal scenarios. We will have to do extensive testing before we can figure that part out.


Death Grip Does Not Affect Verizon iPhone 4?
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Comments (8)
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Leonick
Leonick - January 12, 2011 at 2:29pm
According to annandtech the drop when doing a deathgrip on the verizon one is about the same as on the at&t version. i really doubt the bothered with it, there isnt really a problem unless you are on a crappy network anyway :p
David
David - January 12, 2011 at 1:53pm
What is the DB loss you get in field test mode?
Nick
Nick - January 12, 2011 at 1:36pm
Of course Apple is going to fix the issue with the new iPhone coming out in June, they aren't stupid enough to leave the phone broken and release it a second time.
iceblu121
iceblu121 - January 12, 2011 at 12:58pm
they solved the issue that steve jobs said really WASNT A ISSUE and that every phone had a weak spot.. fucin JOBS i tell ya so why we spent upwards of 500 bucks for a defective phone with a problematic antenna we should atleast be compensated for the next iphone. from either att or apple!
Smart person
Smart person - January 12, 2011 at 1:10pm
First of all, Apple has no right to compensate you. You bought it at 500 from elsewhere, thats your problem. As for the new iPhone 4, I hope this new redesign carries over to the GSM version of the iPhone 4 rather than making it Verizon only.
....
.... - January 12, 2011 at 1:25pm
Paying $500 does not mean that he bought it elsewhere. He could have just bought it without the upgrade price, or from a canadian apple store etc.
David
David - January 12, 2011 at 1:55pm
I have and AT&T iPhone4 with a Speck case and I do not have any death grip problems.
Nick
Nick - January 12, 2011 at 1:59pm
Of course you're not going to have death grip problems when you have a case on the phone, do you even know why it's a problem? Your hand acts as a conductor and connects the loop between the two antenna's which causes the signal degradation. Therefore, if you have a case on the iPhone, you're hand can't connect the loop between the two antennas and you don't have a problem.
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