Gadgetory

hello my name's Gary Sims from and authority now you may have heard this idea that smartphones can suffer from screen burning where kind of marks or artifacts are left on a screen well is it true and if it is true what can you do about it well let me explain now you'll remember way back in the day when we should have the big square CRT it's a cathode ray tube monitors on the desktop we used to always run a screen saver and it was there because it was there to save the screen and the reason for that is under the CRT technology the phosphorous on the glass could kind of get weaker and weaker and so therefore things would get burnt in to the screen of course it was no actually burning there's no heating up going on but just because that the Ray from the cathode ray tube was always hitting in that same place it would kind of use up the phosphorous on that part of the screen now obviously CRTs are very very very different technology to what we have today with our LCD and AMOLED screens on our smartphones but there is some concern that on AMOLED phones particularly there can be this screen burn effect now why does that happen well if you think about the status bar or the navigation keys or even on displays I've got this kind of always-on function there's a clock in the middle of screen they're always there when we're using our phone and the same thing is being displayed basically the kind of the status bar the navigation keys and the same LED is always being powered and the same LEDs next to them are always being powered off to give you the black and the the theory is that after a while the LEDs that are being powered lose some of their color and it's true but we are talking about a period of several years not talking about hours we're talking about years here now what happens is as the current goes through the LED the LED gives off the light and as it gives off the light the higher the more current that goes through over time it just can get slightly dimmer now here is a photo of an AMOLED display from a samsung device they took using a microscope I'm using for another video that I'm doing quite soon about how AMOLED displays an LCD displays work and you can notice here that the blue LED is bigger than the green and the red ones now why is that well it's because the blue LED is particularly susceptible to this problem of losing some of the color so what Samsung have done is they've created the LED to be slightly bigger which means less current needs to go through it if less current needs to go through it that means that kind of fading effect is slightly diminished and the other thing that companies like Samsung do is that where you have permanently displayed things like that so that that HOME key or the clock then basically are moved ever so slightly kind of one pixel to the left or one pixel to the right what that means is it's not always the same pixels that are carrying the burden of displaying the kinds of colors and being lit up while the ones next to it are remaining dark it moves around even just by a couple of pixels you won't really notice that it's not dead center on your screen but yet it's moving the burden around so that not always that same blue pixel in one place always having to be on it every time your phone has power to it now if you are really really worried about this and you shouldn't be but if you are worried about it a few tips for you one is don't power your display at 100% brightness the lower the brightness means the less current going through those LEDs which means that we less color fading so always bring your display down to what you is a for you is a good level but don't push it harder than that also change your background regularly you know you can use one with darker colors that will help as well and also if you really are worried about like the clock being on the screen all the time then you can just turn off those functions on some of these devices so if it is an issue less brightness change your background switch off the always-on display features but really we are talking several years here before you'll start to see any of these problems what my name's Gary Sims from Android authority I hope you enjoyed this video if you did please do give it a thumbs up don't forget to subscribe to the Android to YouTube channel hit that Bell notifications symbol and also go to Android Orascom because we are your source all things Android