QUOTE(keewah @ Oct 7 2010, 02:29 AM)
My tests with iPhone4 on Digi is as follows: DeathGrip will drop service by about 1 bar. So, if you have 2 bars, it will go down to 1 bar, maybe No Service. But if you have 3 bars or higher there should be no problem. Obviously signal strength is usually better if 3G is off, signal strength usually lower when 3G is on. More objectively, if you turn on Field Test mode on iPhone4 with iOS 4.1, you'll see a -10 to -25 dB drop in the signal. Max signal I have got (5 bar indicative) is about -60 dB . Worst signal (but still 1 bar and can maintain service and 3G data usage) is -115 dB.
Interestingly, I find the antenna is actually improved, because previously with iPhone 3GS on Digi and Maxis at a KLCC shop when inside the shop and storeroom virtually no signal goes through. Non-DeathGrip, the iPhone 4 can hold 1 bar at 3G mode and receive SMS, calls, download 3G data in most cases.
What I have found more or less confirms the investigations done at Anandtech: http://www.anandtech.com/show/3794/the-iphone-4-review/2
So, in summary, I advise, if you are regularly in places where you have 3-5 bars in 3G or 2G, whichever you usually use, then DeathGrip may not be a problem.
However, I imagine, for most of us this is not always the experience.
So a case, like Anandtech shows, should only cause DeathGrip signal loss by -10 dB max which should solve most problems.
Thus, to cut a long story short, you should get a case. If you are on Digi do follow the instructions here to try to claim your free case. Good luck
Added on October 7, 2010, 9:08 amHopefully there will be no problems with my case, and the process of my uncle sending it from Singapore to here by registered mail.
I think the improvement (besides protection and prevention of scratches) will be where I experience the sudden signal reduction, which is when I hold it in my left hand to do 3G data stuff.
Also the case may help when I use the phone in my right hand when talking, so I won't "accidentally" touch the sensitive spot which maybe, maybe, will reduce call quality.
This post has been edited by nvidia2006: Oct 7 2010, 09:13 AM
Oct 7 2010, 09:05 AM

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