iPhone 'death grip' down under

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Before the iPhone's midnight launch a few weeks back, we asked the folks lined up around Optus and Telstra what they thought of the iPhone "death grip" issue. The answers we got were strikingly consistent: that this is a problem with the AT&T network in the US and not something we need to worry about in Australia.

The iPhone death grip in Sydney's CBD.
(Credit: CBSi)

By this time we had already finished our preliminary testing of the iPhone's network reception and we had seen first hand the death grip in action, but given the controversy around this issue we decided to take another look.

To do this we travelled to several different locations around Sydney. These locations were chosen at random, but we made sure we tested in places where we saw a variety of signal strengths on the phone for Telstra, Optus, Vodafone and 3. The object of these tests were not to highlight which carriers work better in different places around Sydney, but to see how the iPhone handled a mixture of signal strengths before and after applying the death grip (DG).

The iPhone 4 we used is a review unit from Apple updated to the latest version of the iOS firmware 4.0.1.

Test 1: Sydney, CBD

Telco Before DG During DG
Telstra 5 bars 3 bars
Vodafone 5 bars 1 bar
Optus 4 bars 1 bar
Three 4 bars 1 bar

Test 2: Sydney, North Shore

Telco Before DG During DG
Telstra 3 bars 1 bar
Vodafone 3 bars No service
Optus 3 bars No service
Three 2 bars No service

Test 3: Sydney, North West

Telco Before DG During DG
Telstra 5 bars 5 bars
Vodafone 5 bars 2 bar
Optus 5 bars 1 bar
Three 3 bars 1 bar

As you can see, in all cases except one, the death grip had a significant effect on the signal as displayed by the phone itself, but in two of the test sites out of the three it was impossible to fully kill the signal altogether.

While holding the phone in the death grip we also ran a few internet speed tests. In the majority of these speed tests we saw a huge dip in browsing performance. The mobile-specific test at Ozspeedtest.com usually takes a smartphone about two to three seconds to complete. With the iPhone held in the death grip the test took between 110 and 150 seconds, with the data transfer all but choked by the antenna issue.

This is what we've seen in our tests, but we'd love to hear about your experiences too. Drop us a line in the comments below and tell us about your experience with iPhone 4 reception.

Talkback

Good test results. I assume Telstra doesn't drop as far due to the 850Mhz freq when compared to 2100Mhz used by the other 3 providers. Did you test voice calls during the "DG" or just an out-right signal reduction test?

GTR42GTR42 August 12th, 2010
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iBand Aid fixes iPhone4 antenna problems.

iBand Aid Antenn-aid for iPhone 4 is a custom sized vinyl sticker for your iPhone 4. When placed over the lower left corner of the antenna it may improve signal performance.

http://iband-aid.com

axelcraxelcr August 13th, 2010
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Perth (Nedlands), Telstra, 3G on, inside a building.

Same test as above,

DG on 3.4 seconds to load image, 173kbs, 4 bars.
DG off 3.48 seconds to load image, 169kbs, 5 bars.

DanielVookDanielVook August 12th, 2010
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Toddle down the road to Crawley with your Telstra "anyPhone" (not just iPhone 4) and notice how you don't need to do anything to kill the signal. ;)
To be fair, only Optus seems to have any signal there. :P

Perth, the most isolated capital city on the planet, and we have BIG black spots less than 5Km from the CBD, and our shops shut on sundays!

mweavermweaver August 13th, 2010
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For more informative testing of WHY the bars drop the way they do and the wildly varying responses from people around the globe, check this AnAndTech article:

http://www.anandtech.com/show/3794/the-iphone-4-review/2

psyEDkpsyEDk August 13th, 2010
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First, zdnet, please stop calling it the "death grip" - that spreads the misconception that some sort of "grip" is required. Why not call it the "death touch", or "touching the spot of death", since that is all that is required?

I've not been able to lose service, but sure managed to screw up data - went from 2214 kbps down / 1534 kbps up without touching the spot of death to 32 kbps
down / 8 kbps up when touching it (Optus, Brisbane).

Interestingly, when I'm on Edge, the bars sometimes go up when touching the spot of death (sometimes all the way up to 5 bars).

Here's an interesting examination of the misinformation Steve Jobs spewed forth at the "antennagate" press conference: http://ragingfish.blogspot.com/2010/07/debunking-apples-antennagate-press.html

DingoJuniorDingoJunior August 17th, 2010
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