6 ms·

Don't we already have good scratch protection? Cracks from drops seem like the main issue.

by opan 2y ago

perth 2y ago
So scratching definitely still happens, both on sapphire camera lenses and new scratch-resistant screen technology. I’ve mainly had it happen with concrete. I think concrete sometimes just has some rocks in it that have a very high hardness because I’ve gotten pretty thick scratches in new iPhones when they’ve taken a slide over a rough concrete sidewalk due to a drop while walking.
- HWR_14 2y ago
  Aren't both the lens and the screen are resilient to steel/metal scratches? I'm not willing to run keys or a knife over a phone on purpose.
- kuschku 2y ago
  I've similarly experienced bad scratches whenever my phone and my keys come into contact, hardened steel may still be able to cause scratches?
  - IgorPartola 2y ago
    Your keys are by no means hardened steel. If they are steel at all (most are brass or silver/zinc), they would be mild steel. If they were hardened they would be really difficult to cut. The harder you make a steel the more brittle it gets. Think about what happens when you slam a file with a hammer vs a large nail.
    - kuschku 2y ago
      Considering how easy it is to break keys in the lock, I'd say they're definitely more brittle than malleable?
      - serf 2y ago
        I think that's mostly from mild work-hardening, I haven't experienced that with a brand new key.
        kuschku 2y ago
        What kind of material are your keys and locks made from? Over here nickelsilver or nickel plated hardened steel is common for keys and a combination of brass, steel and titanium for locks.
  - _yb2s 2y ago
    This should not be possible with any type of modern phone screen. Do you perhaps have a plastic screen cover that is scratched? Or key metal could be deposited on the screen and just need to be scraped off
    - kijin 2y ago
      Depending on your location and lifestyle, your keys and other possessions can easily collect a dusting of tiny sand particles. Quartz in the sand can scratch most types of glass.
    - kuschku 2y ago
      No cover, just straight up gorilla glass victus. And it's not just key metal deposited on the screen, there are deep grooves cut into it.
      - _yb2s 2y ago
        I believe you, but there is some other explanation here- it warrants further investigation. You can scrape a regular glass window (about MOHS 6.5) clean with a razor blade (about MOHS 6.0) and it is impossible to scratch it, just from that tiny difference in hardness. I do this all the time, e.g. recently to get paint that my kid painted on the house windows off. Your brass keys should only be about 3.0, and gorilla glass a 9.0- you should be able to rub keys into brass dust all day long and not mark the screen. I store my keys right in my pocket with my glass iPhone SE, and it doesn't have a mark on it. I suppose it is possible you have keys with some weird material or coating, or as another poster suggested- maybe something like an abrasive dust got stuck on your key.
        ralphhughes 2y ago
        I think you may be onto something here. Taking apart old machinery I have often observed that the hardened part of a shaft is worn and has a noticable groove detectable with a fingernail. However the part that rubbed on it is often much, much softer eg a rubber oil seal. My theory is that the much softer material is so soft that microscopic inclusions of something much harder (grit?) are caught in the material and then abrade the harder shaft. Something similar may be occurring in the keys on glass case?
_yb2s 2y ago
I love going to the beach, and find that modern phones still scratch easily with sand.
gs17 2y ago
And it's a tradeoff. I found out the hard way that newer Pixels have incredibly soft screens to avoid cracks and shattering. Unfortunately, they're so soft that a fingernail (a 2.5 on the Mohs scale) will leave huge gouges quickly. Fortunately, there's third-party covers that use an adhesive that fills in the scratches well.
- kazinator 2y ago
  That's a little hard to believe. There are resin finishes that are hard to scratch by fingernail.
  - kazinator 2y ago
    Think about it; you couldn't put a fingernail scratch into a cheap soda glass beer bottle. Why would Google make a phone with glass that could be scratched by a nail, let alone easily? Does that even exist? Perhaps there is some coating on the glass you didn't remove and that's what you're scratching?
    - gs17 2y ago
      I'm sorry if you don't believe it, but it really happens. The "coating" would have to be pretty thick, this gouge was something you could easily feel with your fingertip. I was very careful to not let my keys or anything else get near it, and the gouge (which was essentially the only scratch on the otherwise flawless screen) was exactly where my thumb hits the screen. My Pixel 4a, meanwhile, was in my pocket all the time and never got a scratch.

Don't we already have good scratch protection? Cracks from drops seem like the main issue.

by opan 2y ago

Don't we already have good scratch protection? Cracks from drops seem like the main issue.

So scratching definitely still happens, both on sapphire camera lenses and new scratch-resistant screen technology. I’ve mainly had it happen with concrete. I think concrete sometimes just has some rocks in it that have a very high hardness because I’ve gotten pretty thick scratches in new iPhones when they’ve taken a slide over a rough concrete sidewalk due to a drop while walking.

HWR_14 2y ago
Aren't both the lens and the screen are resilient to steel/metal scratches? I'm not willing to run keys or a knife over a phone on purpose.
kuschku 2y ago
I've similarly experienced bad scratches whenever my phone and my keys come into contact, hardened steel may still be able to cause scratches?
- IgorPartola 2y ago
  Your keys are by no means hardened steel. If they are steel at all (most are brass or silver/zinc), they would be mild steel. If they were hardened they would be really difficult to cut. The harder you make a steel the more brittle it gets. Think about what happens when you slam a file with a hammer vs a large nail.
  - kuschku 2y ago
    Considering how easy it is to break keys in the lock, I'd say they're definitely more brittle than malleable?
    - serf 2y ago
      I think that's mostly from mild work-hardening, I haven't experienced that with a brand new key.
      - kuschku 2y ago
        What kind of material are your keys and locks made from? Over here nickelsilver or nickel plated hardened steel is common for keys and a combination of brass, steel and titanium for locks.
- _yb2s 2y ago
  This should not be possible with any type of modern phone screen. Do you perhaps have a plastic screen cover that is scratched? Or key metal could be deposited on the screen and just need to be scraped off
  - kijin 2y ago
    Depending on your location and lifestyle, your keys and other possessions can easily collect a dusting of tiny sand particles. Quartz in the sand can scratch most types of glass.
  - kuschku 2y ago
    No cover, just straight up gorilla glass victus. And it's not just key metal deposited on the screen, there are deep grooves cut into it.
    - _yb2s 2y ago
      I believe you, but there is some other explanation here- it warrants further investigation. You can scrape a regular glass window (about MOHS 6.5) clean with a razor blade (about MOHS 6.0) and it is impossible to scratch it, just from that tiny difference in hardness. I do this all the time, e.g. recently to get paint that my kid painted on the house windows off. Your brass keys should only be about 3.0, and gorilla glass a 9.0- you should be able to rub keys into brass dust all day long and not mark the screen. I store my keys right in my pocket with my glass iPhone SE, and it doesn't have a mark on it. I suppose it is possible you have keys with some weird material or coating, or as another poster suggested- maybe something like an abrasive dust got stuck on your key.
      - ralphhughes 2y ago
        I think you may be onto something here. Taking apart old machinery I have often observed that the hardened part of a shaft is worn and has a noticable groove detectable with a fingernail. However the part that rubbed on it is often much, much softer eg a rubber oil seal. My theory is that the much softer material is so soft that microscopic inclusions of something much harder (grit?) are caught in the material and then abrade the harder shaft. Something similar may be occurring in the keys on glass case?

_yb2s 2y ago

I love going to the beach, and find that modern phones still scratch easily with sand.

gs17 2y ago

And it's a tradeoff. I found out the hard way that newer Pixels have incredibly soft screens to avoid cracks and shattering. Unfortunately, they're so soft that a fingernail (a 2.5 on the Mohs scale) will leave huge gouges quickly. Fortunately, there's third-party covers that use an adhesive that fills in the scratches well.

kazinator 2y ago
That's a little hard to believe. There are resin finishes that are hard to scratch by fingernail.
- kazinator 2y ago
  Think about it; you couldn't put a fingernail scratch into a cheap soda glass beer bottle. Why would Google make a phone with glass that could be scratched by a nail, let alone easily? Does that even exist? Perhaps there is some coating on the glass you didn't remove and that's what you're scratching?
  - gs17 2y ago
    I'm sorry if you don't believe it, but it really happens. The "coating" would have to be pretty thick, this gouge was something you could easily feel with your fingertip. I was very careful to not let my keys or anything else get near it, and the gouge (which was essentially the only scratch on the otherwise flawless screen) was exactly where my thumb hits the screen. My Pixel 4a, meanwhile, was in my pocket all the time and never got a scratch.