I got a Galaxy S (i9000) and I'm now considering upgrade to S3 or One X.
There are a lot of reasons for me to get S3 but what bug me most is the lifespan of SUPER AMOLED HD. My 1year+ i9000 got slight grey burn in all over the screen, looks like some stains on the glass and feel kinda dirty. It is visible at all brightness and even worst in low brightness. I really hate this as I would like to keep the phone for history/as a memento.
1) I think this question is quite obvious but I will like to ask anyway. Will S3 screen suffer from burn in? Will it be worst than i9000?
2) Should I care about burn in problem ? why yes and why no?
3) Will Super LCD2 suffer from burn in or any other degrade?
Thanks a lot to those who reply.
I think the best answer would be
it *COULD* get burn in, but with normal use it *SHOULDN'T*
Samsung have removed most features that keep the screen on for too long (except smart stay.. but that is smart).
e.g. no "night clock" mode
My SGS2 got bun in 10 months down the line, so there is a chance the SGS3 could also.
HOX won't as LCD is a different tech.
Wouldn't intend to use one as a night clock, but I'm wondering if using an S3 as an in-car sat-nav is the best idea for this model - screen often on a quite high brightnesses for hours at a time... ?
WibblyW said:
Wouldn't intend to use one as a night clock, but I'm wondering if using an S3 as an in-car sat-nav is the best idea for this model - screen often on a quite high brightnesses for hours at a time... ?
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Click to collapse
If the image refreshes or changes often enough it will reduce the chances. Would you use it as such every day? if not I wouldn't worry too much.
My 2 year old desire (amoled one) has a burn in of the top notification bar. I guess it's possible on the s3 too, as the notification bar is always visible.
On mine the burn in is visible only when some app uses the full screen with a light colour. And I think it just became noticeable recently, which means that the s3, using pretty much the same tech, would also last quite some time before this started.
Don't worry.
Sent from my HTC Desire using XDA
I don't think I would keep Sgs3 for more than 2yrs. So the burn in issue shouldn't bother me
Sent from my Incredible S using XDA
1.) The S3 will most probably suffer burn in as well. I have seen heavy burn in on SGS1, SGS2, Note and GNex. It's very unlikely that the SGS3 will be safe from the issue. I don't think the burn in will be worse than the i9000, probably just the same.
2.) Yes, you should worry about burn in. Every time you enter a full-screen app, you'll always see those images burned into the screen. Thing is, the burn in will only get worse.
3.) SLCD2 will not have burn in. Sure it will degrade over time (years!), but the degradation is balanced - entire screen will fade, unlike Amoled screens that will degrade one spot (pixel) at a time.
Keep in mind that LCD technology is years ahead of LED. Plus, Samsung even admitted that their Amoled screens don't have a very long lifespan.
If you intend to keep your phone, go for the One X, or better yet, the Optimus 4X HD.
To avoid screen burns....as far as i know....try keeping ur screen brightness as low as possible ........
Sent from my GT-S5830 using XDA
My Galaxy S II has some burn-in for the status bar, which can be seen on blue backgrounds. There is also cloudy burn-in where the time is displayed in the bar. I always use maximum brightness.
Ways to minimise or prevent burn-in:
1) Set your screen time-out as low as is convenient for you (1 min with SmartStay should be fine)
2) For apps that have the option like PowerAmp and QuickPic, select NOT to display status bar.
3) If you really want to be sure, as the status bar is the most likely to burn-in since it's the only element that's consistently displayed use wallpapers that are dark or black where the status bar touches it so there's no edge.
4) In cases where the screen will be on for long periods of time while displaying certain elements consistently on screen, use a lower brightness.
5) And if you're really concerned, use a launcher such as Apex or Go Launcher EX that allows the option to hide the status bar.
But in the end, I would suggest not getting too hung up on it. By the time it could potentially become a problem such as on your original GS it should be fairly cheap to get a new replacement.
nikzDHD said:
My SGS2 got bun in 10 months down the line, so there is a chance the SGS3 could also.
HOX won't as LCD is a different tech.
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Click to collapse
However SIII is capable of getting burn ins, meanwhile it wont be as fast as burn ins on SII, since SIII uses pentile matrix which means less blue subpixels which degrade much faster than green or red ones.....i own SI for year and half with blue theme since ICS release which means blue theme and there isnt much of degratation with normal usage....however screen doesnt look as it did when i bought it and im annoyed that statusbar region (which is black for most time ) has blue tint-well known to amoled screens......we can expect similar behavior oj galaxy SIII, but i think it will degrade slower because i think samsung is trying to improve lifespan od samoled
Sent from my GT-I9000 using XDA
I had an Galaxy S2 and Galaxy Nexus before. They both had a 'temporarily screen burn', I fixed it by downloading 'Dead Pixel Fix', they flash different colours constantly, I left it for 30 minutes to 1 hour and my burn went. Although I can't guarantee this will fix all burns, it's worth a try if you do encounter it.
I hope Samsung finally have fixed this problem.
Sharpshooterrr said:
I hope Samsung finally have fixed this problem.
Click to expand...
Click to collapse
The S3 use almost the same Display like the Nexus. I don't think so...
Sent from my Galaxy Nexus using XDA
I'm seeing a very slight burn-in on the status bar on some S3 display units already.
Sharpshooterrr said:
I'm seeing a very slight burn-in on the status bar on some S3 display units already.
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Click to collapse
Shame. Unlikely this will make a good phone choice to use as a GPS in a car (on at full brightness much of the time with some static screen elements).
I hope it lasts for 2 years at least!
Sent from my GT-I9300 using XDA
I have status bar burn in!
Sharpshooterrr said:
I'm seeing a very slight burn-in on the status bar on some S3 display units already.
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Click to collapse
It has been 2 weeks since I got this phone and I am already starting to see burn in on the status bar on blue backgrounds!
My Galaxy Note is 3 months old and gas terrible status bar burn in as well!! What gives???:crying:
angelofmusic said:
It has been 2 weeks since I got this phone and I am already starting to see burn in on the status bar on blue backgrounds!
My Galaxy Note is 3 months old and gas terrible status bar burn in as well!! What gives???:crying:
Click to expand...
Click to collapse
On the bright side, since your devices are new, you can still have them replaced.
Related
Is anyone else worried about the burn in problems like the original moled had? My vibrant had it bad... Please don't tell me its not an issue with the original sgs screens, type in google and you will see a lot of complaints on this topic, and my screen is burn in galore. Just wondering if this new screen will suffer from similar problems or if samsung recognized and corrected this issue?
Sent from my SGH-T959
I have burn in on my nexus one right now. Status bar is burnt in, and the keyboard is burnt in. Yes the galaxy s2 will likely do it too.
RogerPodacter said:
I have burn in on my nexus one right now. Status bar is burnt in, and the keyboard is burnt in. Yes the galaxy s2 will likely do it too.
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Click to collapse
Wow, really? I got my Desire (AMOLED) for more than a year now and I can't notice anything.
Zero burn-in after a year's heavy use of my SGS1 - just leave the no activity timeout to 5 minutes or less and you'll be fine.
cTrox said:
Wow, really? I got my Desire (AMOLED) for more than a year now and I can't notice anything.
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Click to collapse
I had burn in after the first month of my nexus. About all people have it, you just haven't noticed it yet.
I see two possibilities here. Some people notice it more, some people based on their usage suffer from it more. I got the N1 when it released for AT&T, dont remember when exactly that was, somewhat more than a year? I'm just now getting to where I notice some burn in but it seems slight to me, not an issue now. Dont know which way I fall in my first observation but I can say that given enough time I think that most people will notice some burn in, how much time, I dont know. I suppose the bottom line is how how much time you spend with a device and will you move on before you get to where burn in becomes an issue to you with your usage. Thats a tough question to answer.
Nine times out of ten burn in on a mobile would be from the status bar. So if you're worried just download and use Go Launcher and set the slide up gesture to hide and show it.
That's interesting people with lcd displays have burn in as well... Well my status bar is permanently there, half the icons on my desktop are also burnt in, had my vibrant since it first came out, its set to 30 sec timeout and auto bright. So do amoled displays just have it worse or is it about the same?
Sent from my SGH-T959
I have noticed some horizontal lines running through the screen on my S2 when light images are displayed. (Also shows on green test screen quite clearly)
They are light bands about 1mm wide and running across my screen at various points.
There is also slight burn in of my status bar, you can see battery and clock if you look hard.
Just wondering if this is a normal occurrence and something to put up with or if it's worth me getting it replaced under warranty.
If I return it and then in 4 months time the same happens it's pointless. Also I would hate to return the phone for screen replacement and then get another screen with maybe a dead pixel or something.
Any help is very much appreciated.
Thank you
can no one help......?
Obagleyfreer said:
I have noticed some horizontal lines running through the screen on my S2 when light images are displayed. (Also shows on green test screen quite clearly)
They are light bands about 1mm wide and running across my screen at various points.
There is also slight burn in of my status bar, you can see battery and clock if you look hard.
Just wondering if this is a normal occurrence and something to put up with or if it's worth me getting it replaced under warranty.
If I return it and then in 4 months time the same happens it's pointless. Also I would hate to return the phone for screen replacement and then get another screen with maybe a dead pixel or something.
Any help is very much appreciated.
Thank you
Click to expand...
Click to collapse
Send it to repair centre, it's definitely a faulty unit.
Your repaired/replaced phone will not have repeated issues.
My phone is a year already, and everything is still prefect
Swyped from my Samsung Galaxy SII
Hello.
Today i noticed that my main screen has a burn in.
I used AMOLED Burn in fix and i can see the message bar from whatsapp and also the bottom screen buttons etc.
Anyone else had this problems?
Considering the v10 uses LCD, not OLED or AMOLED....no
Sent from my LG-H901 using Tapatalk
But why can I see whatsapp text entry bar thing on the grey background. And also the home/back buttons etc
LCD does not burn in. I don't know what you could be seeing, but it seems very highly unlikely.
Sent from my LG-H901 using XDA Free mobile app
aniqpirzada said:
Hello.
Today i noticed that my main screen has a burn in.
I used AMOLED Burn in fix and i can see the message bar from whatsapp and also the bottom screen buttons etc.
Anyone else had this problems?
Click to expand...
Click to collapse
i have the same issue. i dont know what to do. it has some kind of image retention issue. after that i also noticed a lot of deas pixels.
davidcastyalexandra said:
i have the same issue. i dont know what to do. it has some kind of image retention issue. after that i also noticed a lot of deas pixels.
Click to expand...
Click to collapse
mines seemed to fix itself
aniqpirzada said:
Hello.
Today i noticed that my main screen has a burn in.
I used AMOLED Burn in fix and i can see the message bar from whatsapp and also the bottom screen buttons etc.
Anyone else had this problems?
Click to expand...
Click to collapse
I've had this problem for a few days about 2 weeks ago, I could still see AT&T in the top corner. It did look like it was burned in but I knew it wasn't since it's LCD so I didn't worry about it too much. It randomly fixed itself. I wonder what caused it.
I have the same exact problem. And it heals itself but 5 mins of whatsapp use and there it is again. It is so annoying. I m thinking of returning it!
I would suggest to get rid of what's app. That seems to be the common cause for the majority here. Could be what's app is bad app to run on V10
If you dont call this a screen burn then what is it:
http://imgur.com/a/zQWIR
After 3hrs of wave navigation
Grey background to show effect
This won't be too helpful since I can't remember for sure what I was looking at when it happened but...
Earlier today I noticed that my keyboard was showing "in the background" of an app as though it was burned in.
It was definitely strange looking.
I think it was the weather channel app (which had no need for a keyboard popup) yet it almost looked like the app was transparent with the keyboard behind it.
It's definitely not doing it now but it was really weird looking!
Sent from my pretty nifty brand new LG V10
Guys please relax that's just image retention as far as LCDs are the topic. Unless if you stay at the same thing for like 5 hours (this [might] cause a permanent retention i guess).
the only thing that is prone to burn ins are OLED screens. And burn ins are permanent... because they are a burn.
LCDs only retain images because the crystals in their display tends to stay at the same position they are in after a long period of use but this doesn't actually produce damage and doesn't stay permanently. Once the display changes (either turned off or a different thing is displayed) they would eventually return to their normal state and work just fine.
Interesting. I wasn't really "unrelaxed" though... Just never saw it before so I figured I'd share my experience.
Sent from my pretty nifty brand new LG V10
I just noticed a burn-in, or some kind of image retention. I accidentally left my phone on all night while sleeping and the next morning there was a burn in on the top of the screen. It's only noticible when I pull down the notification bar because it's gray. I can only see it in the gray. The whole status bar is burned-in. It has been gradually dissipating. I also noticed a little bit of this when I used Waze for a long road trip a couple weeks ago, but it wasn't as severe of a burn in. At least it is disappearing slowly.
SuhasTheBest said:
I just noticed a burn-in, or some kind of image retention. I accidentally left my phone on all night while sleeping and the next morning there was a burn in on the top of the screen. It's only noticible when I pull down the notification bar because it's gray. I can only see it in the gray. The whole status bar is burned-in. It has been gradually dissipating. I also noticed a little bit of this when I used Waze for a long road trip a couple weeks ago, but it wasn't as severe of a burn in. At least it is disappearing slowly.
Click to expand...
Click to collapse
Same happened to me today. Slept through an amber alert that caused my screen to stay on. When i woke up my phone was off and hot to the touch. Switched batteries and noticed after powering on the amber alert was still faintly visible in the backgound. After about 10 minutes of screen use it gradually faded away.
LG V10 From TMobile Image Burn !
My LG V10 Its Haves A Problem When Im Waching Netflix At My V10 I Can See The V10 Google Search Bar Like In The Back Of The Screen Can This Be Fix ??? Help Please And At The Main Screen I Can See Like Logo Of Things Im Not Using ???
rvnlvrz said:
Guys please relax that's just image retention as far as LCDs are the topic. Unless if you stay at the same thing for like 5 hours (this [might] cause a permanent retention i guess).
the only thing that is prone to burn ins are OLED screens. And burn ins are permanent... because they are a burn.
LCDs only retain images because the crystals in their display tends to stay at the same position they are in after a long period of use but this doesn't actually produce damage and doesn't stay permanently. Once the display changes (either turned off or a different thing is displayed) they would eventually return to their normal state and work just fine.
Click to expand...
Click to collapse
Apparently officially termed "image persistence". Your post recreates a lot of the language from that article. Yeah, LCDs don't burn-in so this topic seemed rather odd to me. What could start showing up is the "dynamic contrast" done with LED backlights to LCDs burning-in; the fact that I've never heard any reports may mean it is uncommon, but I'm cringing at it happening in the future.
emdroidle said:
Apparently officially termed "image persistence". Your post recreates a lot of the language from that article. Yeah, LCDs don't burn-in so this topic seemed rather odd to me. What could start showing up is the "dynamic contrast" done with LED backlights to LCDs burning-in; the fact that I've never heard any reports may mean it is uncommon, but I'm cringing at it happening in the future.
Click to expand...
Click to collapse
Or image retention. It does go away though. Maybe a bad batch too? I drive from Ohio to Orlando, FL with Google maps on the entire time and bendy had a retention issue. All the ones with the issue also said the screen was hot. Corks that be a factor?
Sent from my LG-H901 using XDA Free mobile app
I have had my V10 since December (from T-Mobile). Initially no problems to report, but the image retention issue has become progressively worse (as I type this, the image of this site is being temporarily "burned in"). my father also got a V10 the same day, but does not report this issue. User activity may be leading to a faster declining lifespan of phone, but both phones have had a drastic increase in overheating since receiving the Marshmallow update, which may also be playing a role in the even greater amounts of image retention (a single game of candy crush leaves a residual image).
I'm 19, so like most millennials, I use my phone constantly which is possibly why I have this issue, but it is unfortunate to think there's a chance my phone is slowly dying from general use.
same issue with my v10 (bought a month back)
i think my culprit is Deer hunter 2016...as its the only game i play& only notice it more once i have played it.. i have also seen that if i keep my phone off during the night.. it usually goes away.. while if my phone is ON (standyby) during the night.. it stays. i didnt turned my phone off for the past 2 nights & the burn is pretty much there as you can see. my phone is an ATT v10 h900 on lollypop.. any suggestion will be appreciated.
Screen burn is a problem on AMOLED Displays. After 9 months my S8 had significant burn in due mainly to gaming activities. I don't enable AOD and limit screen time on to 30 seconds. What other measures can be taken to help save the beautiful display on your S9 device?
Use lower screen brightness. I try to use 50% or less depending on environment and my GS7 didn't run into any issues with screen burn-in.
... Seriously?
I've used nothing but OLED phones since the Galaxy S2 and none have had screen burn. Even my old S3 that i have as a spare is fine. I game quite a lot on my phones too, some times for hours with no breaks but still haven't got screen burn. I never even purposely try to avoid it either.
I know that constant high brightness levels can cause burn-in on OLEDS much faster though. I use around 30 - 65% screen brightness in general, but only because of battery reasons. My S7 Edge is ok as well and i had AOD enabled for 15 months.
Screens are not created equal though and some burn easier than others. Even when they're the exact same model. There's a channel on YouTube called "Rtings" and they're testing multiple OLED LG TV's, and some are burning faster than others. So maybe you just got unlucky with the S8.
Beanyness said:
... Seriously?
I've used nothing but OLED phones since the Galaxy S2 and none have had screen burn. Even my old S3 that i have as a spare is fine. I game quite a lot on my phones too, some times for hours with no breaks but still haven't got screen burn. I never even purposely try to avoid it either.
I know that constant high brightness levels can cause burn-in on OLEDS much faster though. I use around 30 - 65% screen brightness in general, but only because of battery reasons. My S7 Edge is ok as well and i had AOD enabled for 15 months.
Screens are not created equal though and some burn easier than others. Even when they're the exact same model. There's a channel on YouTube called "Rtings" and they're testing multiple OLED LG TV's, and some are burning faster than others. So maybe you just got unlucky with the S8.
Click to expand...
Click to collapse
Burn is inevitable with AMOLED, but newer phones seem more susceptible to it. I never had LED burn problems until migrating to the S6. Also, white backgrounds such as on YouTube tend to be the most damaging, because white color is made using all RGB pixels at once.
My AOD burned the number 2 into my screen. It was quite evident. Brought it to T-mobile and they confirmed it was definitely burn in.
Luckily I was within my 14 day protection. Had it replaced with no charge.
Sent from my SM-G965U using Tapatalk
Just don't use the phone at maximum brightness for prolonged period and you'll be good. Never had burn ins on my S4 and S7, at least not yet, screens are still perfect to this day. I rarely set the brightness above 50%.
None.
If it happens I'll return it and get a new one. I use the device as intended.
I set full immersive mode globally using adb, AOD is off, screen brightness on auto but kept below 50% as much as possible, screen timeout is set to 1 minute. I don't play games more than 10-15 mins usually and I try to move 100% of whatever is being displayed on the screen after 30 seconds to 1 minute (even if I have to turn the screen off and back on to accomplish that).
A bit much, I know. But I had a Galaxy S4 back in the day using the screen very moderately, and within 3 months it had terrible blue burn in from the status bar and icons on the home screen Im guessing...
Taking no steps. There's no need whatsoever. People are still using Galaxy S3, S4, S5 devices with no burn in.
This whole burn in thing is taken way out of proportion.
If you get burn in so quickly, you should contact Samsung to get it repaired under warranty, because it's not normal for it to happen that quickly.
I had my S7E on 100% brightness 24/7 for over a year, with AOD, everything.....and saw not a single sign of burn in.
My S8+ had no burn in after a year of usage with AOD always on, with high brightness. There's literally no need to take any preventative steps. That's just overkill.
the_scotsman said:
Taking no steps. There's no need whatsoever. People are still using Galaxy S3, S4, S5 devices with no burn in.
This whole burn in thing is taken way out of proportion.
If you get burn in so quickly, you should contact Samsung to get it repaired under warranty, because it's not normal for it to happen that quickly.
I had my S7E on 100% brightness 24/7 for over a year, with AOD, everything.....and saw not a single sign of burn in.
My S8+ had no burn in after a year of usage with AOD always on, with high brightness. There's literally no need to take any preventative steps. That's just overkill.
Click to expand...
Click to collapse
I use my device as I see fit. Not taking much in preventative for burn. More towards batt life. I have never really burned any device. My wife's s5 had Facebook burned in pretty good. I used aod for several hours at night. But it's been great on every Sammy device I ever owned
Way out of proportion. I mean any static image can and will eventually burn to a oled. But I'm sure I'll have a new device before it ever gets as bad as a several year old s3 s4
Well, first thing I'm doing is NOT using a dark theme. (With totally black portions). I found that using such a theme will create uneven screen wear (burn in) , because there's portions of the screen that just wont be affected, like for example think the YouTube app's video portion.
Everything I can...
This is my third Samsung with AMOLED. The first was a Note 2. I started playing a geo-location game that needed to have the screen on to get credit for moving around. So it ran for hours each day. Annoyingly it has a bright green box in the upper right (it's a button you use all the time), and it got burned into my display within a few months. When I got my next phone (Note 4), I took every precaution. I ran an app every night, all night long that cycles through all the colors, full screen, to aid in preventing it. I tried to mostly use my geo-location game at night with the screen brightness turned almost all the way down. It helped a lot. I went over 2 years before screen burn in started appearing. I think I made a mistake with the overnight app. I had the brightness turned way way down when perhaps I should have turned it up instead. I changed that and the burn in faded out for a few more months, but I would notice it whenever I used the game outside during the day (hiking and such), because I had to turn the brightness up to see the screen. Now it no longer fades and is every present on my screen. The phone is almost 3 years of use at this point though.
My last step I have been doing is using one-handed mode to change where that button shows up on the screen. I figure if I can prevent it from sitting in the same place all the time, it will go a long way to preventing the burn in.
Feedback from many different viewpoints is good. However it sounds like some people are saying 'screen burn in is no big deal. I've never had it'. Just because it hasn't been a problem for you, doesn't mean it's not real for other people or that's it's blown out of proportion. We all use our phones differently.
room511 said:
My AOD burned the number 2 into my screen. It was quite evident. Brought it to T-mobile and they confirmed it was definitely burn in.
Luckily I was within my 14 day protection. Had it replaced with no charge.
Sent from my SM-G965U using Tapatalk
Click to expand...
Click to collapse
Screen burn in in less than 2 weeks from an always moving display (AOD)? Sound fishy.
meyerweb said:
Screen burn in in less than 2 weeks from an always moving display (AOD)? Sound fishy.
Click to expand...
Click to collapse
Agreed.
It is what it is though.
Haven't turned it on once with my new phone.
Sent from my SM-G965U using Tapatalk
I think that for the typical phone user, the only place burn-in is likely to be a significant issue is on the status bar, and maybe the nav bar. The S9 is my first AMOLED phone with soft buttons instead of Samsung's capacitive buttons, but the only place I've ever noticed any burn in before is on the status bar, and really, who cares about that?
If, OTOH, you frequently keep the screen on for long periods using an app with fixed in place, high-contrast items, there's probably not a lot you can do beyond reducing screen brightness. If the app allows any customization of those items, like changing colors, try to make them less bright.
Well.. having owned a few devices with AMOLED/OLED displays(S2, S3, S6, S8+, S9+), all those devices had burn ins, some worse than others.
Since the S8+, I made a habit to not max out the brightness(I'd go 100% manual on all my previous devices before S8+), l left it on auto brightness, and if I figure that it had gone too bright, I'd move the slider back to 40~50%. And also hide the navigation bar. While web browsing, I hide the status bar too. Throughout the one year of using S8+, I'm happy with how it was holding up. And continued with these habits on my current S9+. Won't say that those are compromises to the experience, if anything it's even better, with hiding the navigation bar and status, it gives it more immersive experience while protecting the display.
So I've bought this used Oneplus X ( Age unknown ) and it has burn-in on the status bar. I only just noticed this after re-flashing the phone where the white theme was as default. A ton of Facebook notifications, different battery and reception is burned in. I'm wondering, is it the "Always on" feature that contributed to this, or is it just general use?
I got this phone for 100 euros, switching over from a Oneplus One with rampant 3G issues, when switching to the black theme it isn't noticeable luckily so there's that!
Elder Lyons said:
So I've bought this used Oneplus X ( Age unknown ) and it has burn-in on the status bar. I only just noticed this after re-flashing the phone where the white theme was as default. A ton of Facebook notifications, different battery and reception is burned in. I'm wondering, is it the "Always on" feature that contributed to this, or is it just general use?
I got this phone for 100 euros, switching over from a Oneplus One with rampant 3G issues, when switching to the black theme it isn't noticeable luckily so there's that!
Click to expand...
Click to collapse
1. Why did you get a used Oneplus X at 100 euros , where you could have bought other new phone.?
2. Always on display shows the date, time and notification.... Even when the screens off.( So I don't think it's that.)
3. Burn in rarely happens on an AMOLED and if it has happened, you need to replace the screen.
Hope I answered your question.:laugh:
It can happen from general use. On my phone it's quite noticeable.
I've got a bit of burn in on mine, from the notification bar, but I can only ever see it if I'm looking for it AND have the brightness down all the way AND have the area around where the notification is a grey colour. At that point, I can start clearly making out icons, but otherwise general use has not left any marks. I could probably even make it a bit better by switching my notification bar icons to black and using that for a long while, but I don't really care enough since it's so minor.