Name: Mi 9の耐久性テスト!- カメラレンズはサファイア？ (Mi 9 Durability Test! - Is the Camera Lens Sapphire?)
Uploaded: 2021-01-14T08:51:47.000Z
Duration: 7 min 3 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

The Xiaomi Mi 9 – the more expensive premium smartphone in the Xiaomi line up, but at the

same time, still pretty fairly priced for the specs and power it brings to the table.

Xiaomi is claiming to have added a sapphire glass protective layer on their camera lens.

Sapphire is an ultra hard, ultra premium product with superior scratch protection, right there

Today we'll see if Xiaomi is using real quality sapphire like HTC, Tissot, and Kyocera, or

if they are using junk sapphire like Apple.

You got to hand it to Xiaomi for this color scheme.

It's definitely a deeper blue than I anticipated, with hints of purple and basically all of

The phone feels pretty lightweight, but we'll get to that in a second.

I have a set of Mohs hardness mineral picks that are used to differentiate between different

minerals and gemstones, and they let us know exactly what kind of materials we are dealing

Glass and sapphire, while both optically clear and at first glance might look the same, are

Glass scratches at a 5 or a 6, and pure sapphire would scratch at a level 8 or 9.

Diamonds, of course, are the hardest mineral and scratch at a level 10.

The screen of the Mi 9 scratches at a level 6, with deeper grooves at a level 7.

Xiaomi is advertising Gorilla Glass 6 on the screen of this phone, so those numbers are

pretty typical for what we find on tempered glass screen flagships.

Xiaomi has the teardrop notch up here at the top, hiding a 20 megapixel selfie camera.

The small sliver of a speaker grill is also tucked up here in the top bezel.

The build quality of this Mi 9 is off to a good start.

The phone is made from anodized 7,000 series aluminum.

It's pretty normal of the glass sandwich style phones these days.

The volume and power buttons are also metal.

Down here at the bottom of the phone next to the USB-C we have no headphone jack.

But over here on the left side we do have a fully customize-able side button that can

take pictures, open apps, or start a voice assistant.

The dual SIM card tray has no expandable storage.

It does have a rubber ring around the tip, but unfortunately, just a light touch of my

SIM removal tool popped the low quality rubber band from around the SIM card tray opening.

There's no official IP rating on this phone, which is good because this rubber is totally

worthless and shouldn't be officially protecting anything.

Xiaomi's flagship Mi line does not have the SD card slot or headphone jack anymore, but

the budget Redmi line does include those extra features.

If the Redmi line is cheaper and has more features, it's honestly worth considering

Up at the top of the Mi 9, along with more metal, is the infrared remote control which

is a fun little addition to this smartphone.

The Mi 9 does have a plastic layer between the screen and metal frame of the phone which

It helps absorb some of the impact between two brittle layers if it's ever dropped.

Xiaomi has advertised over and over about their new sapphire glass camera cover on top

The first problem with that sentence is that it's never actually called sapphire glass.

Both materials should be impervious to my level 5.5 stainless steel razor blade.

Glass won't start scratching till right above that at a level 6.

The reason sapphire is so valuable and premium is because of it's scratch resistant properties.

It should hold out till a level 8 before it gets damaged.

Unfortunately though, I can start to feel my level 6 pick grind on the surface of Xiaomi's

The level 7 pick also leaves marks on the sapphire lens cover when it should definitely

And finally, the point when we should start seeing scratches, level 8, we get some pretty

I'll pull out my level 6 one more time to double check, and indeed we see more scratches.

Before we pull out any pitchforks though, let's see if it registers as sapphire.

You can see here the glass lens of my Galaxy S8 Plus has no reaction with my electronic

But when I place the same tool up against the sapphire lens of the Mi 9, the tool does

The selector can detect the thermal conductivity that sapphire and diamonds have, but that

same conductivity is not found in glass or fake gemstones.

So Xiaomi is indeed using sapphire, just not a quality version of it.

Maybe Xiaomi found a way to combine sapphire and glass, and that's why they called it sapphire

glass instead of the correct sapphire crystal.

Either way, Xiaomi has just joined Apple's ranks with sub-par inferior sapphire that

should not be compared with the real stuff.

There are a few companies that are doing it right like Tissot, HTC, and Kyocera.

So if you want real premium quality sapphire, head over to those guys.

Xiaomi is using an under screen fingerprint scanner, an optical fingerprint scanner just

We'll have to take a look at it from the inside if this phone survives the bend test.

But first we'll scuff up the surface of the glass with level 7 scratches to see if Xiaomi's

fingerprint scanner can function due to the unrealistic exorbitant amounts of abrasion....and

Scratches are definitely not an issue for this optical fingerprint scanner.

Optical scanners only work with LED displays and not LCDs, since LED panels are slightly

opaque allowing the under screen camera to see through the display.

We can verify that indeed it has the characteristics of AMOLED by using this highly scientific

Bic inflammatory device I obtained at a gas station.

The Mi 9 has a 6.4 inch 1080p AMOLED display that turns white after about 30 seconds.

But then the pixels do end up turning back on and recovering.

If you think the burn test is extraneous, you are definitely not wrong.

字幕リスト動画再生

Mi 9の耐久性テスト!- カメラレンズはサファイア？ (Mi 9 Durability Test! - Is the Camera Lens Sapphire?)

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