Hi. Was wondering about the screen dimensions of mi mix. If you check Xiaomi's website it says there is a 17:9 ratio in screen dimension which implies the width of screen, for a 6.4 inch diagonal, is 3.3882 inches. But on the same website the total width of phone is 81.9 mm which converts to 3.244 inches! So would someone mind carefully measuring the width of the screen. In many respects this is more important to me than the actual diagonal size. Thanks!
http://www.mi.com/en/mix/specs/
Using a regular transparent plastic ruler, below are the measurements as accurately as I can muster:
- The entire width of the phone (including the thick ceramic edge plus button protrusion) is 8.15 cm = 3.208661 inches
- The entire width of the screen from top (including a bit of the ceramic edge, no buttons) is 8.05 cm = 3.169291 inches
- The viewable screen (lit-up portion) width is 7.51 cm = 2.956693 inches
- The viewable screen (lit-up portion) diagonal itself does measure 6.4 inch
Hope that answers your question.
So according to your measurements, the size of the side bezels (both sides altogether) would equal 6.4mm. That's bigger than my Mi 5S's side bezels of 5.08mm...
marcolorenzo said:
So according to your measurements, the size of the side bezels (both sides altogether) would equal 6.4mm. That's bigger than my Mi 5S's side bezels of 5.08mm...
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Click to collapse
Although your measurement doesnt sound right, if its so; thats a shame for Xiaomi for naming the mix as 'bezel less'
Mi MIX
7.4.6 Épic
Konsstantine34 said:
Although your measurement doesnt sound right, if its so; thats a shame for Xiaomi for naming the mix as 'bezel less'
Mi MIX
7.4.6 Épic
Click to expand...
Click to collapse
What's wrong with my measurements? Anyways, I have always believed that Xiaomi exaggerated a bit by calling the Mix "bezelless" since even with my eyes, I can see that all they did (which is still impressive btw) is reduce the top bezel. The two side bezels are as thick, if not thicker than most modern flagship phones.
marcolorenzo said:
What's wrong with my measurements? Anyways, I have always believed that Xiaomi exaggerated a bit by calling the Mix "bezelless" since even with my eyes, I can see that all they did (which is still impressive btw) is reduce the top bezel. The two side bezels are as thick, if not thicker than most modern flagship phones.
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Click to collapse
Agreed. Granted, the drastic reduction of top bezel, at least for me, does absolute wonders in making this a joy to use, but size bezels are not noticeably smaller than most phones and bigger than some of the mainstream phones out there.
marcolorenzo said:
So according to your measurements, the size of the side bezels (both sides altogether) would equal 6.4mm. That's bigger than my Mi 5S's side bezels of 5.08mm...
Click to expand...
Click to collapse
You need to measure diagonally to get 6.4 not across. Anyway the surface area of a 16:9 and a 17:9 is totally different even if their screen size is the same.
Leechoonhwee said:
You need to measure diagonally to get 6.4 not across. Anyway the surface area of a 16:9 and a 17:9 is totally different even if their screen size is the same.
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Can you actually prove me wrong then with actual calculations? Because I already know what you said and I factored them into my calculations so I don't see where the problem is. Obviously 6.4" is a diagonal measurement, anyone knows that. By the way, I used this article from The Verge as a reference.
The measurements I used for the Mi 5S's physical size were official measurements and for the Mi Mix, I used wendyalison's measurements (if I used official measurements for the Mi Mix, then the bezels would've been even bigger because they're a little wider than wendyalison's measurements).
marcolorenzo said:
Can you actually prove me wrong then with actual calculations? Because I already know what you said and I factored them into my calculations so I don't see where the problem is. Obviously 6.4" is a diagonal measurement, anyone knows that. By the way, I used this article from The Verge as a reference.
The measurements I used for the Mi 5S's physical size were official measurements and for the Mi Mix, I used wendyalison's measurements (if I used official measurements for the Mi Mix, then the bezels would've been even bigger because they're a little wider than wendyalison's measurements).
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Click to collapse
Since the Mi5s is 5.15" and Mi Mix is 6.4", even with a difference in ratio, the mix should be wider than the Mi5s or are you trying to prove otherwise?
Leechoonhwee said:
Since the Mi5s is 5.15" and Mi Mix is 6.4", even with a difference in ratio, the mix should be wider than the Mi5s or are you trying to prove otherwise?
Click to expand...
Click to collapse
Of course not, I simply said the side bezels are wider. I never said the screen of the Mix was not wider than the 5S.
Related
From the CNET Nexus 7 review (by Josh Miller):
http://reviews.cnet.com/google-nexus-7/
The bad: The lack of built-in expandable storage and and omission of HDMI are disappointing and the design follows the plain, black tablet mold, with uselessly thick top and bottom bezels
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Really? What is Josh smoking? And folks who are expecting expandable storage on Nexus devices need a reality check.
A big "whoosh" to Mr. Josh Miller
*Flame suit on*
I agree with him.
In fact on the Xoom or Nexus Tablets forum I stated that exact complaint yesterday or the day before.
They could have done something with the top and bottom bezels....or at least trimmed them down a bit.
Now I'm no stranger to tablets and understand we need *SOME* bezel real estate for our thumbs/pads of our fingers to reside w/out touching the screen. Just think the bezel is a bit excessive. Then again....I'm not buying one for the looks. It's really stretching to complain about that issue, but it is a valid one IMHO.
It's a beautiful / slick device my friend, have you seen these pictures yet?
http://www.anandtech.com/Gallery/Album/2131#10
I think they're "handle bars" that way you can read your device and still hold it
I am thinking the bottom and top bars are thicker is because of when holding the tab in landscape mode. Since you will need more support to hold the tablet that way they gave you more bevel to hold onto. While holding it in portrait you are able to grab it easier with one hand so its not as necessary to have thicker bezel on the sides.
Right away when I noticed it I was disappointed with the large bezels. It's a waste of real estate. I'm not saying no bezel, I'm just asking for a thinner bezel that would allow for more display.
The lack of sd card support is also disappointing but there are ways around it. Also the lack of MHL or HDMI is a bummer. It wouldn't have added much to the cost. Heck, they could have been exclusive features for the premium version.
i didnt really notice the bezel yet but looking at it again its huge! lol could have been a little smaller tbh.
Yeah, the bezels are a bit thick, but the extra space is probably needed for the device's internals. We'll find out once someone does a tear down of the device.
Hey, leave the Nexus 7 alone, they had to have the big bezel so they had room for the micro sd slot!!!!!!! What? There is no slot? Mmmkaaay. Nothing to see here folks, move along.
I think it's fine (but then again I don't really have much to compare to). I'm not a fan of bezels so thin that you have no good way of holding it without touching the touch screen. I do think it's odd that the top and bottom are bigger than the sides. Maybe someone has a patent on uniform bezels?
Anyway, I think it's all good if they use that extra space to cram as much battery in it as possible.
Well of they shrunk the bezels down, apple could have sued over that. They did patent bezel size and matching. Sizing or whatever bull****
Sent from my Iconia A500 using Tapatalk 2
Cant agree with the OP.
It would have been nice for the top and bottom bezels to be slimmed down, as they are pretty pointless since there are no buttons or anything.
Also, although its not a tradition, its nice if they would add in the expandable storage. Its a really useful feature to have.
According to Duarte, Android designer, the bezel widths are designed. The side bezel is thin to allow easier thumb navigating while in portrait (default orientation for N7). The top/bottom bezels are thicker, since you need a larger space to grip when in landscape mode.
While valid, this ignores handspan differences. As someone with XS hands that have difficulty grasping both sides of a Nook in portrait, I would've preferred a more grippy border in portrait than the edge-to-edge glass surface. I dare say this is true as well for the majority of women, and of course for kids/teens.
Secondly, the unbalanced top/bottom notification bars are also intentional design aesthetic, to create a "weighted base" effect. While I was unaware of this, after some introspection I agree with the intent. The display seems more "proper" with a "heavy chin." Note that Kindle Fire and Nook Tablet/Color also have this element.
Watch video below at 11:11 mark for discussion of the bezel design.
http://www.theverge.com/2012/6/29/3126587/matias-duarte-on-the-nexus-7-and-jelly-bean
BTW, while Topolsky may be an above-average blogger (which isn't saying much), I find him a poor interviewer. An interview is about the interviewee, not the interviewer. Topo interrupts too often, and talks for too long. There is a need to keep to an agenda for an interview, but he needs to blend into the background and let the interviewee through.
Can't imagine how you'd hold the thing without putting your fingers on the screen if the sides in landscape mode weren't the size they are. Of course, if they were smaller then a bunch of people would be on here complaining about that so there's no way to satisfy everyone.
That is, unless you're Apple and everything you produce is magically perfect. :laugh:
Bezel size is perfect for me for gaming. Would not want them any smaller.
And had the bezel been made smaller people would complain about that..
Humans = funny... LOL
Besides providing space for my palms in landscape mode, they're also the right width for a thumb to hold the bottom of the device in portrait mode. Also they look much bigger in pictures than they do in hand.
Sent from my Nexus 7 using xda premium
You need reasonably large bezels to be able to fit in a big battery and then put the motherboard around outside, have a look at a tear down on YT they don't waste much space with these things
Sent from my HTC Desire using xda app-developers app
When i saw the first images of the nexus 7 i thought they'd made a mistake with the size of the bezel, but having used it now i can't complain.
Actually I do a lot of reading in portrait and wish the "long" bezels were thicker.
I haven't compared Note 4 and Note 8 side by side, but it appears to me that despite having a much larger overall screen estate, the Note 8's width in portrait orientation might be narrower than the Note 4? I don't think I've seen screen specs that would somehow factor in the curved sides (i.e. lost effective screen estate) of the Note 8.
In other words, do 16:9 videos appear smaller on the Note 8 than on the Note 4? And e-books: I'm guessing they would need to have slightly wider side margins to avoid letters being distorted by the curved edge (though, of course, more text would fit overall, due to the larger vertical screen estate)?
And while I'm at it - and coming from Note 4 and never having owned a curved screen phone - isn't it distracting that two edges of the video frame are curved (distorting the peripheral image and dispersing light) while the sides are "cut sharp" by letterboxing?
I hope I don't come across as a "hater", because I'm not, far from it. I'm still happy with my fully functional Note 4, just considering my options and trying to get a grasp on the new fancy tech...
The physical size should be very similar watching a 16:9 video on both however the perceived size would likely be the Note 8 being smaller due to the curved edges which would frame the video content and the black border on either side.
The best way to see if you are comfortable with the curved edges (they are a good thing and a bad thing in equal measure) is to just pop to a store and compare your existing device with the store model.
As I say perceived size and real physical are often different.
Sent from my SM-N950F using Tapatalk
Even though I have a 6T 6.4" I wouldn't say no for an s10 with 6.1" but the claim that battery is much better on the + is making me think twice.
Anyone has both in exynos and can compare SOT?
Do you feel the single small punch hole of the s10 much more tolerable than the cigar shape dual lens of the s10+?
S10+ will be better.
vegetaleb said:
Even though I have a 6T 6.4" I wouldn't say no for an s10 with 6.1" but the claim that battery is much better on the + is making me think twice.
Anyone has both in exynos and can compare SOT?
Do you feel the single small punch hole of the s10 much more tolerable than the cigar shape dual lens of the s10+?
Click to expand...
Click to collapse
Whatever size you like. I looked at both and I liked the S10 better because it was a little smaller. I keep BT, location and wifi on all day on my S10 and usually have between 30 and 40% left when I charge it at bedtime. I'm fine with the small cutout but I don't thing the oval one would bother me either. It looks like the Snapdragon may have a little better battery life so if you're getting the Exynos then your usage may vary. Some people are more anal than others and don't like either cutout so in the end it's what you're looking for in a phone.
S10 is fine if you some extra bucks then go for S10+
So it doesn't bother you to have a bigger "hole" out of nowhere on the s10+? On the s10 I could live with it
I have both and will be selling my ceramic S10 plus. The standard 10 just feels to be the right size and going back to the plus just illustrates how much managing these large phones take, yes you get used to it but there is no doubt that the 10 is easier to use one handed and less of a burden to carry.
The jump from say 5.5 or 5.8 made the burden worthwhile but 6.1" is hardly a small screen and may well be the sweet-spot
YMMV
Sent from my SM-G973F using Tapatalk
I tried both, figured I'd prefer the S10+ because of the battery but even if I'm used to 6.4 inch displays (note 9, 6T), a far prefer the S10's format. It's just a bit less screen but to me, it feels much better in the hand.
Nic2112 said:
I tried both, figured I'd prefer the S10+ because of the battery but even if I'm used to 6.4 inch displays (note 9, 6T), a far prefer the S10's format. It's just a bit less screen but to me, it feels much better in the hand.
Click to expand...
Click to collapse
I have found a thread in xda where people are getting 8h Sot with the s10 after a full reset and no apps restored from backups.
If this is confirmed I would take the s10. My 6t actually gives me 7h sot which is good for a full day, I would certainly get 10h if I do a reset but I am too lazy specially if I will sell it soon
I love the standard s10. It's still plenty of screen real estate, the battery is still amazing.
I did a complete review if you are interested in watching it,
---------- Post added at 01:12 AM ---------- Previous post was at 01:11 AM ----------
arsenal74 said:
I have both and will be selling my ceramic S10 plus. The standard 10 just feels to be the right size and going back to the plus just illustrates how much managing these large phones take, yes you get used to it but there is no doubt that the 10 is easier to use one handed and less of a burden to carry.
The jump from say 5.5 or 5.8 made the burden worthwhile but 6.1" is hardly a small screen and may well be the sweet-spot
YMMV
Click to expand...
Click to collapse
Yep. S10 feels like a phone and not like a tablet
S10+ FTW!! Forget the rest
Nic2112 said:
I tried both, figured I'd prefer the S10+ because of the battery but even if I'm used to 6.4 inch displays (note 9, 6T), a far prefer the S10's format. It's just a bit less screen but to me, it feels much better in the hand.
Click to expand...
Click to collapse
The Note 9 is much bigger (wider) than the 6T. I know what you mean, as the 6T does feel more comfortable in the hand since it is a smaller device. The S10+ has slightly smaller side bezels, so it is marginally less physically wide than the 6T despite having a larger (wider) display.
The 6T has the longest aspect ratio (19:9) while the Note 9 has 18.5:9 and the S10+ has 19:9.
vegetaleb said:
Even though I have a 6T 6.4" I wouldn't say no for an s10 with 6.1" but the claim that battery is much better on the + is making me think twice.
Anyone has both in exynos and can compare SOT?
Do you feel the single small punch hole of the s10 much more tolerable than the cigar shape dual lens of the s10+?
Click to expand...
Click to collapse
Looking only at the diagonal length is misleading owing to the differing aspect ratios. Pythagorean Theorem. This is why diagonal sizes are seemingly so much larger these days despite phones not necessarily becoming much larger. Bezel has been replaced with display with the same phone width, and phones have also started becoming slightly longer.
If you were to only consider the 16:9 portion of these displays, then here's a quick summary for comparison (+/- 0.01" for Rounding). Personally, I wouldn't get the S10 since it's a tad small for me.
S10: 5.34"
S10+: 5.63"
Note 9: 5.69"
OP6T: 5.49"
I don't really like the camera cut-out on the S10/S10+ since it makes the notification bar fairly gigantic. The wider cut-out on the S10+ won't make as much a difference as you might think as the actual placement is more important.
aenews said:
The Note 9 is much bigger (wider) than the 6T. I know what you mean, as the 6T does feel more comfortable in the hand since it is a smaller device. The S10+ has slightly smaller side bezels, so it is marginally less physically wide than the 6T despite having a larger (wider) display.
The 6T has the longest aspect ratio (19:9) while the Note 9 has 18.5:9 and the S10+ has 19:9.
Looking only at the diagonal length is misleading owing to the differing aspect ratios. Pythagorean Theorem. This is why diagonal sizes are seemingly so much larger these days despite phones not necessarily becoming much larger. Bezel has been replaced with display with the same phone width, and phones have also started becoming slightly longer.
If you were to only consider the 16:9 portion of these displays, then here's a quick summary for comparison (+/- 0.01" for Rounding). Personally, I wouldn't get the S10 since it's a tad small for me.
S10: 5.34"
S10+: 5.63"
Note 9: 5.69"
OP6T: 5.49"
I don't really like the camera cut-out on the S10/S10+ since it makes the notification bar fairly gigantic. The wider cut-out on the S10+ won't make as much a difference as you might think as the actual placement is more important.
Click to expand...
Click to collapse
Btw, if you change the fonts size, will it enlarge the statusbar icons too? I can use a phone without glasses if I can make these icons and fonts a bit larger
vegetaleb said:
Btw, if you change the fonts size, will it enlarge the statusbar icons too? I can use a phone without glasses if I can make these icons and fonts a bit larger
Click to expand...
Click to collapse
You can always adjust the DPI. I find the default to be way too large, so I do the opposite and reduce it on any device I use. You can also independently adjust the font size if you wish. Between those two settings, you should be able to get the right balance for yourself.
https://youtu.be/aJ7H2SN2VsA
If you watched the video you can clearly see that both phones have same brightness level yet the A70 screen looks much brighter and better than K20's screen which is dim and has ugly red tint. Samsung used a a very high quality amoled panel in the A70, the best I have seen in this price range. A70 also has bigger screen, bigger battery, and performance is great. It's downside is the ugly outdated back design and build materials. K20 has notchless display but look how thick the phone is. A70 is much thinner and sleek. I think the A70 is the winner.
I might be biased since I own the A70 :laugh: Still the superiority of A70's AMOLED screen is undeniable and it's the main reason why I choose Samsung phones over other brands.
Bottom line: Not all AMOLED screens are created equal! Chinese phones use cheaper lower quality amoleds.
What do you think? :fingers-crossed:
I think the back of the a70 is really nice and does every thing I want it too just a shame the back srat he's so easy
the mi 9t is 300€ in france or 350€ depends on deals.
Sufyan3D said:
https://youtu.be/aJ7H2SN2VsA
If you watched the video you can clearly see that both phones have same brightness level yet the A70 screen looks much brighter and better than K20's screen which is dim and has ugly red tint. Samsung used a a very high quality amoled panel in the A70, the best I have seen in this price range. A70 also has bigger screen, bigger battery, and performance is great. It's downside is the ugly outdated back design and build materials. K20 has notchless display but look how thick the phone is. A70 is much thinner and sleek. I think the A70 is the winner.
I might be biased since I own the A70 :laugh: Still the superiority of A70's AMOLED screen is undeniable and it's the main reason why I choose Samsung phones over other brands.
Bottom line: Not all AMOLED screens are created equal! Chinese phones use cheaper lower quality amoleds.
What do you think? :fingers-crossed:
Click to expand...
Click to collapse
you are probably right. just like lcd screens, big difference between LG and XIAOMI ones.
but at least k20 has gorilla glass 5. a70 has version 3.
it always gonna be a trade off...
thalesbraga said:
you are probably right. just like lcd screens, big difference between LG and XIAOMI ones.
but at least k20 has gorilla glass 5. a70 has nothing.
it always gonna be a trade off...
Click to expand...
Click to collapse
A70 has gorilla glass 3
Yes you r right my source site was wrong.
Good to know
Also loving this battery life... way better than s10+
So a70 or mi 9t
I still prefer Samsung a70 over mi 9t
Special regards the display
I have no problem with the back of the phone i'm using a case anyway or after a month i will find tiny scratches everywhere even if the back is metal
Im currently debating between mi 9t or a70.
Which phone has better camera and video quality.
Can someone give me a hand?
Xiaomi mi 9T is the better device to me and yes I have both.
K20 has its disadvantages....
No expandable storage capacity..
Screen size...
Battery life...
These 3 are the ones which made me go for a70 rather than any other phone...
senseijtitus said:
K20 has its disadvantages....
No expandable storage capacity..
Screen size...
Battery life...
These 3 are the ones which made me go for a70 rather than any other phone...
Click to expand...
Click to collapse
128GB is enough for my needs
Both displays are fine
Both Phones have great battery life.
I'm currently intersted which phone has better camera/video quality.
senseijtitus said:
K20 has its disadvantages....
No expandable storage capacity..
Screen size...
Battery life...
These 3 are the ones which made me go for a70 rather than any other phone...
Click to expand...
Click to collapse
These are not Disadvantages
64gb or 128gb expandable storage is a personal preference.
Screen size is a personal preference screen on the a70 could be to big for some.
Battery is great on both back to screen smaller less battery consumption.
Disadvantage a70 sd675, glastic back that scratches easily, oh and one low speaker I have to crack it to the max most of the time.
dante_99 said:
128GB is enough for my needs
Both displays are fine
Both Phones have great battery life.
I'm currently intersted which phone has better camera/video quality.
Click to expand...
Click to collapse
Camera as of now, go with redmi. But gcam support for a70 is very much possible with dev's almost done with source codes...
---------- Post added at 11:32 AM ---------- Previous post was at 11:28 AM ----------
hands0m3 said:
These are not Disadvantages
64gb or 128gb expandable storage is a personal preference.
Screen size is a personal preference screen on the a70 could be to big for some.
Battery is great on both back to screen smaller less battery consumption.
Disadvantage a70 sd675, glastic back that scratches easily, oh and one low speaker I have to crack it to the max most of the time.
Click to expand...
Click to collapse
Well, plastic back is actually preferable with larger phones because of the risk of accidental drop. And to be honest, a70 performs pretty good as well. And it is perfectly slim and anyone can hold this phone in his/her hand without problem. One hand usage is pretty awesome.
The speaker volume is good enough. But plug in a good mid tire headset, its amazingly good...
Hey Folks,
I have noticed 2 small chips in the ceramic back panel of my Mi 11 Ultra on the 5th day of delivery. It's so small(almost needle tip size), it's not visible under normal daylights. Need to check in room light and by slightly moving the phone. Is anyone else also noticing such chips ? I feel these are factory defects mostly since the chipped parts are also equally shining/reflective.
I have had Mi mix in the past for more than 1.5 years. Never noticed any such chip on Mix. I never use any protection film or case since I guess ceramic doesn't scratch with daily objects and my phones don't fall very often(touch wood).
No point in adding a photo of the chip since I am not even able to capture it on camera, its so small.
Just Clean the back side and put a skin
javed_gabriel said:
Just Clean the back side and put a skin
Click to expand...
Click to collapse
Thanks for the amazing tip Bro. You sorted my life.
Anyone noticing such chips is my question. I am checking with the service center for replacement anyways. Just want to understand if this is a one-off unit or it's a general problem.
Its General issue to all Ceramic and Glass Panels.
Ceramic in general should be harder than glass
javed_gabriel said:
Just Clean the back side and put a skin
Click to expand...
Click to collapse
I put it in a good case... if you value the device.
blackhawk said:
I put it in a good case... if you value the device.
Click to expand...
Click to collapse
Depends, I don't prefer to make my device bulky when I hardly drop it. Had 1st gen Mi Mix for 2 years without skin or case, no drop, no scratch. Mate 20X for about 3 years, I use skin on the rear since it's glass(very scratch-prone), maybe a total of 2 drops of 2 feet height, and it survived both
speedtripler said:
Ceramic in general should be harder than glass
Click to expand...
Click to collapse
Yes, that's what I am concerned about. I am not sure if the dents are done by me or factory-made. Ceramic phone I was planning to keep without any skin since I have already kept Mi Mix for 2 years without any rear-skin.
Mi Mix Ceramic was rated 8 on Mohs by JerryRigsEverything in its scratch test. I found a video of Mi 11 Ultra scratch test where the guy rates it 7 on Mohs.
bark1234 said:
Depends, I don't prefer to make my device bulky when I hardly drop it. Had 1st gen Mi Mix for 2 years without skin or case, no drop, no scratch. Mate 20X for about 3 years, I use skin on the rear since it's glass(very scratch-prone), maybe a total of 2 drops of 2 feet height, and it survived both
Click to expand...
Click to collapse
It may not be you who drops the slippery fish, one fouled hand off is all it takes. Maybe it will happen to fall four feet onto concrete. Actually a true story, the brand new phone belonged to my former scumbag boss. It was a tragedy
I have a 10+ that's heavy and the only thing it wuves to do more than corner hit is face plant. Without a case it just wouldn't be it's spotless self.
High G impact ie 3-4 feet onto tile, concrete etc generates enough high G loading to break a chipset's internal bonds amoung other things.
A good case spreads out the impact G spike load and makes it survivable. It also makes it easier to hol, to grasp and helps prevent accidental screen touches especially with curved displays so it's more usable.
These are not ruggedized phones without a case.
Do as you will...
bark1234 said:
Yes, that's what I am concerned about. I am not sure if the dents are done by me or factory-made. Ceramic phone I was planning to keep without any skin since I have already kept Mi Mix for 2 years without any rear-skin.
Mi Mix Ceramic was rated 8 on Mohs by JerryRigsEverything in its scratch test. I found a video of Mi 11 Ultra scratch test where the guy rates it 7 on Mohs.
Click to expand...
Click to collapse
Glass and ceramic are chemically similar but structurally different. Ceramic tends to be slightly harder, but sand will scratch it. Most metals will not.
You can actually use the edge of a car window the sharpen a knife. A ceramic cup also works.
It's possible you did it, it only takes a grain of sand. At least it's not the display. Consider a wet apply plastic screen protector. My display would have been scratched by now without one.
A good case has slighty raised edge guards that prevent direct contact on flat surfaces.
Fun fact, you can polish out very fine scratches in glass with a dry palm or finger tip.
Your skin is slightly abrasive to glass.
Works on coated optics like as well.