[Galaxy Note 4 General] winlinmac001:
Continued from, http://xdaforums.com/note-4-tmobile/general/display-issues-thread-t2910575

So that everyone can move on,

Here's my write-up based on my experience with AMOLED displays since the days of the Galaxy S and introduced Note series,

Whatever you all experienced in the Note 4, I've experience in virtually every Galaxy Flagship device 'till date. I wrote a comprehensive report about this at the following thread, http://xdaforums.com/showthread.php?t=2108073

This was regarding the Note 2 at its time and also applies to the Note 4.

The reason why the Note 4 has true blacks in person now is that Samsung finally heard us all, and managed to program the pixel to "literally" turn off whenever the color black displayed. Samsung should have done this from the start.

I've used Supercurio's Display App (THE REAL DISPLAY ISSUE FINDER APP) and was able to replicate the Mura Effect (Includes Smearing, Lines, Splotches, etc) on a dozen or so Samsung Galaxy Note 4's.

Please Note: These are inherit problems of AMOLED displays which should not have any drastic impact on lifespan of these devices. The PPI has nothing to really do with this as this is really part of the AMOLED manufacturing process.

If any of you have any questions, feel free to ask, I've done the technical research into this matter and have also passed dialogue to Samsung in the past.

Honestly, I would recommend you all to simply enjoy your devices because exchanging will not help at all unless the "tint" is really noticeable. There is always a give and take.

The way I tested for screen anomalies on these AMOLED devices, I'm sure not even DisplayMate or the Reviewers are keen to do.

Here is my report quoted below,

---------- Post added at 02:40 PM ---------- Previous post was at 02:29 PM ----------

What is important to note is that there is thread like this on the General Note 4 forums (International Variant) and AT&T Note 4 Forum Discussion. Wish the mods could consolidate all of these threads, because its pertaining to every single Note 4 sold on the global market, thus far. No such thing as perfection and any person claiming to not see any anomalies is not looking close enough (also doesn't seem to understand the engineering faults behind this marvel). I still applaud them for not creating a fuss; they are simply trying to enjoy their investment until the Next Big Thing comes about.

---------- Post added at 02:41 PM ---------- Previous post was at 02:40 PM ----------

You're damn right, ha. Did you know Samsung pays a lot of their reviewers to emphasize on the good things than the bad? That's I why I never rely on the reviewers, and I approach the devices myself! :cool:

If you come across a Note 4 that has tint that is extremely prominent and impacts how you view your devices, you have the right to do an exchange or return. However, if the tint is minimal and doesn't appear in all situations when you use your phone, consider that normal, because pretty soon Samsung is going to say the same, not taking sides here, that's just the truth since we're dealing with organic displays. At least we're not speaking about bleeding issues found with conventional LCD IPS Displays.

---------- Post added at 03:03 PM ---------- Previous post was at 02:41 PM ----------

Note: You have to adjust the grayscale settings in Supercurio's app (Not Black, Not White) to really appreciate what the minority sees.

The AMOLED anomalies are more apparent in low brightness, dark-room settings, and again these anomalies have no impact on the way the devices is perceived by the majority, because these are just trade-offs when buying any device with an AMOLED panel in general.

In other words, just live it unless you have display which displays extremely high tint.

In older panels, Samsung used to bring the brightness down to 0%. Samsung has become clever and now brings the default brightness down to ~9%, and programs the pixels to turn off at that level black is displayed (this is why changing the screen mode from adaptive to anything else can sometimes draw clipping to some users watching videos that contain dark-scene settings. But by the majority that tend to set their brightness to extremely high percentage, the issue becomes less apparent); coming back to AMOLED anomaly regarding uniformity and smearing in low-brightness and black-color, this becomes less apparent at that 9% brightness level whereas anything further below that becomes prominent. You can say that Samsung has hidden the underling MANUFACTURING LIMITATIONS of AMOLED displays under the rug.

---------- Post added at 03:13 PM ---------- Previous post was at 03:03 PM ----------

Funny to note, the ease of Burning-in seem to have been virtually eliminated in Samsung's latest iteration of their AMOLED displays thanks to Samsung's software implementation of literally turning off individual pixels (not true pixels but the transistors which power these individual pixels) when black colors are displayed. Don't confuse this with stores that have display models which are constantly left on with a static image at the highest brightness level setting, that part is a normal process attributed by constant on-screen times.

Remember, AMOLED is constantly improving one iteration after another. If you're in the market for buying a phone or any electronic with an AMOLED display, make sure you buy from Samsung and not from some other phone maker like Motorola, because manufacturers other than Samsung tend to use older AMOLED display technology. No, I don't represent Samsung, [MENTION=5469644]Limeybastard[/MENTION] ;)

---------- Post added at 03:30 PM ---------- Previous post was at 03:13 PM ----------

Everyone's displays are analogous to this. And here is the irony, did you know these panels are connected to the power source from the top. We're talking organic displays here; the display receives power from the top primarily and traverses down to the bottom? That's why the bottom will look fainter than the top, but rest-assured, set the brightness high, and the brightness is virtually distributed everywhere across the screen with minute anomalies. We are have to consider the physics here too, Samsung has made sure (through programming instruction) that the phone never reaches the low brightness level you've set to find the anomaly. Almost 99% of users will not see what you see unless they are very curious and want to know how and what to look for. ;) :p

There is no such thing as a uniform AMOLED display. Now I don't want to stress on this because Samsung will think that we are accepting this limitation. There will eventually be a time when AMOLED technology will be virtually perfected to the point that we don't have to have start threads like this. Therefore, if the issue is prominent in "everyday" situations, then an exchange may be favorable, but don't expect any dramatic differences. Any lines appearing in higher brightness levels and at low brightness levels as set by the touchwiz interface is certainly not good and should be exchange. However, if no lines appear in the touchwiz interface but appear when using display-test apps like Supercurio's app, consider that normal, as these specific apps tend to toggle below the default low brightness level programmed by Samsung.

I hope this clears up a lot of different perceptions anyone may have regarding this "normal" (Samsung's point-of-view) matter.

Be aware there are a lot of arrogant and ignorant forum members that will be quick to tell you your device is flawed or contains imperfections and will push you into going through an exchange / returns process which need not be necessary. Be weary of these particular users as

most cases of AMOLED issues

are normal by the technical norm. However, any other issue pertaining to the device may be an actual issue such as cosmetic blemishes and other hardware components that might not be responsive. When you purchase your device, always perform a diagnostics test in person by entering *#0*# on your dialer pad and follow each tab to ensure each and every function of the device is working. Software issues are different from hardware issues, vice versa.

I read through all '22' pages last night before going to sleep; I'm also responding to those users that shared great concern over these AMOLED panels, I'll add additional usernames overtime so these users can follow-up if they have any further questions, [MENTION=402975]kabuk1[/MENTION] (from Display Issues Thread / T-Mobile Note 4 XDA Forum)

Updated January 31st, 2015

If you have any questions or further clarification, feel free to PM me or ask me on this thread. I want to make sure the international community has a sense where AMOLED technology is going. Please be aware that AMOLED has made great strides from the day of its initial iteration. The panels in the Note 4 are designed to last longer but still need to be handled with care.