Gorilla glass 2.0 tough enough?

Discussion in 'iPhone' started by jcorbin, Feb 26, 2013.

  1. jcorbin macrumors 6502a

    Oct 18, 2011
    Is the screen on the iPhone 5 (gorilla glass 2.0) resistant enough to every day use or is a screen protector necessary.
  2. Menel macrumors 603


    Aug 4, 2011
    substantiate this
  3. Luis2004 macrumors 6502a

    Dec 30, 2012
    If you keep it in a dedicated pocket and don't throw it around, it should be enough.

    But you need to remember that Gorilla Glass is not harder than quartz, which is found it most dust, sand, and rocks. If you have any of that stuff in your pocket then yes, you will get scratches.

    Personally I go without a screen protector and have Applecare+ on it in case it gets scratched or whatever.
  4. jcorbin thread starter macrumors 6502a

    Oct 18, 2011
    Then what the hell is it resistant against
  5. Luis2004 macrumors 6502a

    Dec 30, 2012
    Gorilla Glass, on the hardness scale, has a hardness of 6+ - 7. (there is some dispute about this, as some have claimed it is a 9. But the frequency of reports of it being scratched makes me believe the number I heard in other forums about it being between 6 and 7.)

    Anything harder than that will scratch the screen.

    Iron, steel, nickel, lead, gold, silver or any medal are softer (1-5) than gorilla glass, so they should not scratch the glass.

    On the other hand, sand contains quartz and it could scratch gorilla glass, for example when sand is in your pockets (after a walk on the beach).

    One more thing:
    a common misconception is: 'make something sharp and it will scratch'. it's wrong. you can make your fingernail or your key as sharp as possible, it is still softer than the glass and it will not scratch.
    So, no, keys won't scratch it (steel), but anything harder than 7 on the scale will with no problem. So anybody that has no scratches obviously hasn't made contact to the screen with anything harder than a 7 on this scale.

    Hardness Substance or mineral
    0.2–0.3 caesium, rubidium
    0.5–0.6 lithium, sodium, potassium
    1 talc
    1.5 gallium, strontium, indium, tin, barium, thallium, lead, graphite
    2 hexagonal boron nitride,[10] calcium, selenium, cadmium, sulfur, tellurium, bismuth
    2.5 to 3 magnesium, gold, silver, aluminium, zinc, lanthanum, cerium, Jet_(lignite) (lignite)
    3 calcite, copper, arsenic, antimony, thorium, dentin
    4 fluorite, iron, nickel
    4 to 4.5 platinum, steel
    5 apatite, cobalt, zirconium, palladium, tooth enamel, obsidian (volcanic glass)
    5.5 beryllium, molybdenum, hafnium
    6 orthoclase, titanium, manganese, germanium, niobium, rhodium, uranium
    6 to 7 glass, fused quartz, iron pyrite, silicon, ruthenium, iridium, tantalum, opal
    7 quartz, vanadium, osmium, rhenium
    7.5 to 8 hardened steel, tungsten, emerald, spinel
    8 topaz, cubic zirconia
    8.5 chrysoberyl, chromium, silicon nitride
    9-9.5 corundum, silicon carbide (carborundum), tungsten carbide, titanium carbide, stishovite
    9.5–10 rhenium diboride, tantalum carbide, titanium diboride, boron nitride, boron [11][12][13]
    10 diamond
    >10 nanocrystalline diamond (hyperdiamond, ultrahard fullerite)
  6. ThatsMeRight macrumors 68020

    Sep 12, 2009
    Also, it does matter how much force you put into it. I bet a metal like titanium can still scratch the screen if you put a lot of force on it.

    Gorilla Glass is just more resistant to scratches than standard glass. Also, one other special feature: if the Glass does shatter, you won't have a lot of glass flying around your head (like what happens with normal glass).
  7. keitarou macrumors 6502

    Dec 7, 2012
    The screen should be made of diamonds!!!!
  8. Small White Car macrumors G4

    Small White Car

    Aug 29, 2006
    Washington DC
    I have never seen a good use for screen protectors on an iPhone. Ever.

    The only thing you have to worry about is a bad fall that will crack the screen. And guess what...no screen protector will protect against that.

    Some people use cases, some don't. That's personal preference and you can go either way. But whichever way you go, screen protectors are just a big waste of time and money.
  9. cynics macrumors G4

    Jan 8, 2012
    I have a titanium key too! Crap! Lol


    Oddly enough notice its worn out a bit? It's by far harder then the rest of my keys and the lock cylinder on my car.

    Friction? Excessive force? Dunno, I understand the hardness scale but there seems like there's more too it.

    When I shoot hardened steel targets pistol rounds only take the paint off. Rifle rounds can leave significant damage.
  10. ThatsMeRight macrumors 68020

    Sep 12, 2009
    Well, it's quite a soft metal right? A soft metal can be very hard, while a hard metal can be very soft. :)

    Probably lots of factors come into play. We're not even sure if glass is a liquid or solid, haha. :)
  11. SR45 macrumors 65832


    Aug 17, 2011
    Gorilla Glass is a marketing term. Does not mean indestructible

    $49.00 replacement if drops/spills on iphone. Priceless

    AppleCare + insurance from Apple
  12. Gav2k macrumors G3


    Jul 24, 2009
    It's not the glass that usually scratches its the coating on the glass.
  13. BeeJee macrumors 6502

    Nov 27, 2011
    Long Island/North Jersey
    I remember my first Nokia bar style phone, 2 lgs and my Razr all had plastic screens. People never had the need to use screen protectors then, but now everybody is becoming so sensitive and are worried about GLASS scratching. I mean, unless your phone meets sandpaper pretty much any scratches it'll get (if any) will be unnoticeable in everyday use unless you're looking for them in direct sunlight or something.
  14. jabingla2810 macrumors 68020

    Oct 15, 2008
    You appear to be far too intelligent for this forum.

    I hope you stick around.
  15. takeshi74, Feb 27, 2013
    Last edited: Feb 27, 2013

    takeshi74 macrumors 601

    Feb 9, 2011
    As always (same as it for any device), it's a matter of personal preference. Quantify "tough enough". It's scratch resistant but it's not unscratchable. You have to make the call based on your preference. You have to take whatever precautions you're willing to take. We can't tell you that. Some use screen protectors. Some do not.

    It's personal preference for both. What you consider "good use" or "waste" is your subjective preference. The next person's can and will vary. You can't dictate what others will or will not worry about based on your preference. Further, "never seen" != "does not exist" despite what many seem to think.

    No, hardness matters. Force and sharpness do not. The material has to be harder than the Gorilla Glass to scratch it. You can certainly crack it with enough force but scratching it requires a harder material.

    Screen protectors aren't anything new. They've been around for a long time whether you noticed them or not.
  16. quietstormSD macrumors 6502a


    Mar 2, 2010
    San Diego, CA
    Great post, should be on an iPhone FAQ or on the sticky with most FAQ on this forum.
  17. RichardC300 macrumors 65816


    Sep 27, 2012
    Chapel Hill, NC
  18. Luis2004 macrumors 6502a

    Dec 30, 2012
  19. mlmwalt macrumors 6502a

    Jun 8, 2010
    Philadelphia, Pa, USA
    I use the screen protector that came with my Otterbox. I'm glad I put it on. It has 5 "scars" on it from falls, etc. I emailed them about the damaged protector and they sent me a few replacements (mighty nice of them, I was willing to pay for them). I'm pretty certain some of these scars would''ve scratched my screen. I wouldn't have gotten a screen protector if it hadn't come with the Otterbox. This is my experience and should be considered as such.
  20. shiekh macrumors member

    Sep 26, 2006
    Don't know if this helps, but for lubricated bush bearing one normally runs hard against soft, and then it is the hard that eventually wears away; what is happening is that there are harder particles in the oil that get pressed into the softer material and these eventually wear away the harder.
    I wonder how true this is in the dry case, where a metal key may have fine grit embedded in its surface.
  21. jabingla2810 macrumors 68020

    Oct 15, 2008
  22. syd430 Guest

    You could of pasted the source link and put the full post post in quote tags. Now you just look sad because the way it was worded.
  23. Luis2004 macrumors 6502a

    Dec 30, 2012
    I'm not sad at all. So a couple of people are tsk tsking about my very helpful and informative post?

    Attached Files:

  24. Luis2004 macrumors 6502a

    Dec 30, 2012
  25. hovscorpion12 macrumors 65816


    Sep 12, 2011
    No iPhone uses Gorilla Glass. 1 or 2. Th iPhone screen will crack when dropped at a certain height and force. The rumored iPhone 5S or iPhone 6 is rumored to contain Corning Gorilla glass.

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