The reason for those smooth iPhone X gestures? 120Hz touch input sampling
by Daniel Petrov / Nov 10, 2017, 8:38 AM
Before actually getting to use the iPhone X last week, we were a bit on the fence about its new gesture-based navigation of swiping up, holding, or flipping through recent apps. Could these really replace the simple act of tapping the legacy home key?
Our worries, it turned out during the review process, were in vain. Not only are the gestures very intuitive, and easy to become second nature, but also the sheer responsiveness of the display while executing those made us wonder what could be behind the smooth operation. We din't encounter a stutter, slowdown or skipped animation framing once, even with plenty of processes kept in the background.
iPhone X will sport the same ProMotion display refresh technology that is available on Apple's newer iPad Pros? ProMotion is Apple's marketing name for doubling the typical 60Hz refresh rate of a mobile display, and that 120Hz refresh makes everything scroll, swipe and animate smooth as silk. The upcoming Razer Phone does that, too, and it is one of the crown jewels in its gaming street cred.Well, remember those rumors that the
The iPhone X, however, doesn't have a true ProMotion 120Hz display refresh rate, so how come the gesture response is so instantaneous? What the iPhone X does have, is the next best thing - a 120Hz touch sampling rate, as you can see in Apple's developer support table below. It means that when you place your finger(s) on the display, it refreshes with double the usual rate, ready to follow every flick and whim of your fingertip(s) with lightning speed, then throttles things down to the normal rate to save on tasking the graphics subsystem and the battery. Could this be the reason for the touch layer freezes in cold weather temps? It remains to be heard, but Apple promised a software fix, so that might have something to do with it.
Or, as Apple puts it for its developers: "When the capture rate is higher than the delivery rate, multiple events are coalesced into one touch event whose location reflects the most recent touch. However, the additional touch information is available for apps that need more precision." Not ProMotion, but a welcome promotion to the good ol' touch layer nonetheless, and a good compromise between performance and power draw.
Posts: 77; Member since: Aug 11, 2017
Can't wait for the next iPhone X article
posted on Nov 10, 2017, 8:51 AM 23
Posts: 1762; Member since: Feb 10, 2009
Aperently you all trolls love iPhone articles. Commenting weird stuff on all of them. I find this very interesting info. Hey but I am an optimistic person. I would be equally interested if Samsung has a new tech on there next phone that was better than anything else out ther. I wouldn’t complain about it like a jealous high school freshman. Hey if you are in high school I am sorry because I am out of line you would be acting normal.
posted on Nov 10, 2017, 6:14 PM 2
Posts: 401; Member since: Sep 29, 2015
It's like a rinse and repeat here. I'm just waiting for the next article bashing the Pixel 2 or XL. IMO I would have to say the phone of the year is note 8 at the moment and on believe note 9 will bring things to another level. It's almost the closest thing to a surface phone. Samsung got the juice now.
posted on Nov 10, 2017, 8:57 AM 11
Posts: 51; Member since: Oct 15, 2013
What do feel makes the Note 8 the phone of the year? It doesn't have the best performance, it doesn't have the best camera, it doesn't have the best screen, etc. It's a nice phone and clearly Samsung's best effort, but it's hard to justify how this would be the phone of the year.
posted on Nov 10, 2017, 2:01 PM 1
Posts: 2445; Member since: Mar 23, 2012
I can imagine all the frustration and mental pressure you all Apple haters go through these days....LMAO Sincerely I feel sorry for all you bunch of idiots. My advice is just buy an iPhone and say bye bye to crappy android once and for all. You all have about 20 flagship android phones but NON of them come even close to the iPhone X......lol NON!!!
posted on Nov 10, 2017, 4:24 PM 2
Posts: 38; Member since: Sep 29, 2014
For me this phone is amazing and I absolutely love it.
posted on Nov 10, 2017, 9:01 AM 5
For me its completely opposite what you think.
posted on Nov 10, 2017, 9:06 AM 3
Posts: 1408; Member since: Oct 24, 2016
I can understand you. You guys were waiting for great Samsung's OLED display for such a long time. But still can not understand, Why Apple didn't put virtual home button with Hard Press. What's better use of the existing Hard Press feature on iPhone displays???? And easier for old and long-time ifans.
posted on Nov 10, 2017, 10:59 AM 1
Posts: 624; Member since: Jun 10, 2015
If someone really want that feature, you can do so under the accessibility menu. There, you can turn on the software home button (which you can position anywhere on the screen). You can also customize it to your liking, that feature has been in iOS for years now.
posted on Nov 10, 2017, 11:15 AM 2
Klinton. I bet only very very few people cared if iPhone X had lcd or oled screen. Everyone wanted better screen to body ratio - that’s it! This phone would have sold just as good with the same screen tec as iPhone 6, with same ppi as iPhone 6 - and no one would care. The only benefit for oled screen is battery savings with dark mode - that’s it. Oversaturation is hit and miss with people - it’s subjective. Burn in is actually a real concern now. So here are positives and negatives. But trust me - ask anyone, nearly all people would say they don’t care (you’ll here more on tech forums that actually know the difference). But to the rest - no one cares. Stop selling like oled is such god-send. It’s got its own problems.
posted on Nov 10, 2017, 12:39 PM 3
Posts: 51; Member since: Oct 15, 2013
You should know that the screen isn't an off the shelf Samsung part. It's an Apple designed screen that leverages Samsung's manufacturing technology. As reviewed on DisplayMate, it's a higher quality screen than Samsung was able to make for their own phones. As others have mentioned, there are pros and cons to OLED and LCD. The quality of best of both technologies are very similar. Going OLED is motivated by battery saving and form factor rather than quality. In fact, Apple apparently had to jump through quite a few hoops in order to help mitigate things like screen burn in and color shifting, etc. that's associated with OLED.
posted on Nov 10, 2017, 2:07 PM 1
Thats awesome...you can definitely feel the 120 hz touch input when using it, feels so responsive and quick I hope next Android flagships incorporate this. It really does make a difference
posted on Nov 10, 2017, 9:05 AM 4
Posts: 638; Member since: Nov 15, 2013
Useless because OS will lag anyway.
posted on Nov 10, 2017, 10:24 AM 4
Posts: 624; Member since: Jun 10, 2015
@adecvat - it won't be total useless, it will make a difference. You are however right that in order for it to be working great, those changes needs to also happen at the OS level. That is one of the issues Android oem's have since they don't control the entire stack. Some vendors have tried to tweak/hack the OS a bit, which is what the upcoming Razor guys are doing.
posted on Nov 10, 2017, 10:49 AM 7
Posts: 2146; Member since: Nov 04, 2011
So this means iPhone XI will get 120 Hz Sample and Touch. I believe iPad 2018 will get 240 Hz Sample and Touch! Wow!
posted on Nov 10, 2017, 9:23 AM 0
Send a warning to post author
Send a warning to Selected user.
The user has 0 warnings currently.
Next warning will result in ban!
Ban user and delete all posts
Message to PhoneArena moderator (optional):