iPhone 4 Interlacing effect

I went to the apple store today,here is my small research:

I test out 8 iphone4s,4 white Version and 4 Black. All of them running IOS4.3.x( 2 ios4.3.3, 2 ios4.3.4, 4 ios4.3.5)

1.All of them does NOT have interlacing effect under direct observation.

2.With the test image,3 of them have very weak flickering,almost undetectable，the others do Not flicker at all.

SpezGuy

My phone has exactly the same issue with yours.it usually looks fine in the morning when I wake up ,but flickers again after using for a while.

I began to think it is a hardware failure,there is nothing to do withcolor temperature,fireware vision or baseband，only the screen itself.And if you are using an normal screen for a while, you would not standinterlacing screen which become easierto notice.

I decide to make an appointment with the Genius to try to get another replacement.I will tell you guys the result.

hey,guys

I went to the Genius Bar today and got a replacement.There is definitely No flickering in the apple store with my test image,but after using for an hour,it flickers again....I really did not know what went wrong with the screen.In addition,I found that the iphones forexhibition in the store have weak flickering,but they keep sreens open for all times.with doing this with my phone,it also has very weak flickering.What I mean is that no flickering on the exhibition phone does NOT means they don't have problems.

There is another case.One of my friend's iphone also has this issue only after he update to ios5 beta3 from ios4.3.x,and then ios5 beta4 ,this issue also exists. but when he downgrades to ios4.3.5,this issue is gone.

So,I went back to the starting point,Is it a software issue?The screens from different batches need different refresh rate,maybe very small difference,but apple doesn't take it into account.I hope so and could do noting but to wait for ios5 coming.

BTW,I report this "BUG" to Apple. I think if more and more people report this issue to apple ,apple will take it into account in the near furture.

You can report it herehttps://bugreport.apple.com/cgi-bin/WebObjects/RadarWeb.woa/wa/signIn,Sign your ID as a developer (Its FREE)first.

Wish you guys good luck.

HEY，JAKE

I just get the oppsite case of yours.The interlacing completely disppeared if I've used my phone for a few minutes (keeping the screen on).but after locking the screen for a while then open it ,it flickers again.Both of my two replcement phones are in this case. It's so weird. Maybe it's the IOS thing?The CPU/GPU frequencyor other hardware parameters are different when using or not using phone. It's just my speculate.

What is your father's new iphone4 production batches?You can know it from the serial number.For example,9512805KA2S,means this phone is made in the 28th week of 2011.The third number means year(0 means 2010,1means 2011),and the 4th and 5th number means week of that year. and your father's phone always does not have this problem at any time or any case?I dont get a new iphone4 on my hand.I would be very grateful If you can make a more detailed test with that grey image , I suspect that the replacement phones are unqualified ,lower quality at least.There are at least 10 people report their relacemeant phones have this issue in our local forum.Even that there is a guy get 10 replacement phones,and all of them flicker.

It easy for me to get another relacement,just show the genius this test image,but it's so waste of time.I really do not know what to do now.

Same here, my iphone4 screen flickers after wake up but disappears after a few minutes of use...

Andresebr,

Your phone is original or replacement? runing ios 4.3.x?

Thanks.

It is not a replacement, it is original... I bought it on december with iOS 4.1 and it hadn't that issue, currently my phone is running iOS 4.3.5, I'm not sure but I think this issue came out since the 4.3 update and it is a posibility since that update messed up ipods touch showing weird artifacts on the screen...

Jake-M andAndresebr

Thanks for your replies.

Jake-M,Both of your dad and GF's phone are made in 25th week of 2011,and neither of them have this issue,so maybe the 25th week phones are all perfect 🙂My first repalcement phone is 28th week,and second one is 27th week.

Andresebr's case prove that it's a software issue,at least for his iphone.Back to my starting point,maybe there is something to do with the baseband.Because baseband get an major upgrade from ios4.2(or4.1)to ios4.3,but tiny upgrade from ios 4.3 to ios5beta.this is the caseband version list:

iPhone 4 iOS 4.1 02.10.04

iPhone 4(WCDMA)4.2.1 03.10.01

iPhone 4(WCDMA)4.3&4.3.1-4.3.5 04.10.01

iPhone 4(WCDMA)5.0beta4 04.11.06

iPhone 4(WCDMA)5.0beta5 04.11.07

There is not much difference between ios4.3 and ios5beta from the version number,Actually,the ios5 beta5 did not solve the interlacing effect.

I have report this "BUG" to Apple on 29th july,but they did notrespond to me so far.I will continue to submit more evidence. Hope the Apple engineerstake this matter seriously.

Hi everybody

I have to replace 2th phone as well. and the interlace line problem still remain on both replacement phone I got. until now i upgrade iphone to ios5b7 and the problem still remains as well. Apple please tell us what happen. I can wait to next update if it's software bug but can't accept if it's some kind of new OEM hardware problem. please let us know soon Apple. 😟

I'm having the same issue with my replacement handset. Manufactured on week 32, 2011. The problem is very noticable on gradients and difficult to see on solid white and black. The original handset was replaced for a worn out home button after 1 year. I've had this unit for approximately 10 days before I noticed the problem.

I'm running iOS 4.3.5.

I tried to take a photo of the problem. Unfortunately I don't have a great camera and it picked up some unintentional artifacts. The white specks around the numbers are not the issue and not visible, it's just something the camera picked up. The real problem is the horizontal lines, noticable on the gray gradient and on the Earth.

http://i.imgur.com/1MxMo.jpg

Your picture shown the true that every replacement phone have the interlace line like that. So how can we deal with Apple? I replace my iPhone twice. Problem still remain, waste a lot of time. So Apple please serious with this problem. We need only new prefect display replacement phone, please please Apple.

Unfortunately everyone, I do not think Apple will be doing much about this. It's not a priority right now because they're probably putting all their resources into the iPhone 5, as well as hopefully GOOD retina displays. They will replace our phones as many times as we ask them to bc their business model is to make us happy. Too bad the problem exists IN the phone and in whatever manufacturing change took place this year. I know that once in a while there are still screens that do not have interlacing but they are not the majaority and no one really knows a rhyme or reason to how to get one. Seems like just luck at this point.

I called apple today and they had me reset the iPhone and call back. I can still see the lines on the Connect to iTunes screen. Now I'm stuck on hold.