Overclock.net › Forums › Industry News › Hardware News › [FY] First Broken iPhone 4 Shows New Glass Isn't That Resistant.
New Posts  All Forums:Forum Nav:

[FY] First Broken iPhone 4 Shows New Glass Isn't That Resistant. - Page 5

post #41 of 95
Quote:
Originally Posted by vdek View Post
How did they break it? They don't actually mention how they performed their test.

I had dropped my 1st Gen iPhone a few dozen times before the screen finally cracked on it.

Regardless, any screen will crack if you try hard enough. Plastic screens tend to have better impact resistance, however they scratch really easily due to the lack of hardness and don't feel as good on a touch interface(last point is imo).

Unfortunately there is no magic material which has sufficient hardness to resist the formation of scratches by common materials and which also has enough toughness to avoid fracturing under common shocks(Such as falling 6ft onto pavement). Usually materials which are hard tend to be brittle (easily fractured) and materials which are ductile tend to be soft(easily scratched).
Quote:
On the new iPhone, the glass basically sits on top of the aluminum frame. On the old iphone, it was recessed and protected by a chrome bezel.

We have a full iPhone 4(minus the circuit board), here at our shop and decided to do a little drop test. This drop was performed from 3.5 ft up. Mind you that these parts ARE original apple parts. Laser etched and all. The iPhone 4 did survive 2 drops, as expected, but on the 3rd drop there was a loud POP, and yet again, shattered glass.
I think you wanted this info from the article. Mostly the difference in structure. I'm pretty sure "dropped" just means holding it and letting it go. Why didn't they video this?

Quote:
Originally Posted by vdek View Post
Well, not necessarily, they usually tend to add some extra thickness to the phone itself. If the phone were to fall flat, the extra material added by those silicon covers would absorb enough of the impact to minimize the risk of the glass screen fracturing. If the phone were to fall at an angle, then it will end up landing on one of the corners first which again would be covered by this material and absorb the impact.

However, if the cover sits flush with the screen, then yeah, it's useless.
Completely agree though they way they described the difference between the new and older phones sounds like the situation you described in the last sentence. The "protection" will probably work wonders for the phones durability.

Quote:
Originally Posted by DuckieHo View Post
Also want to note.... 30x stronger in what metric? Impact, sheering, compression, scratch resistances, ect.

If anything, glass is less resistence to impacts than plastics.
Duckie nailed it. The problem with glass should be obvious. Watch the Myth Busters where they try to get out of a submerged car by breaking the window. Once you get enough pressure in one focused spot it explodes. Like if there is a tiny rock when the face falls flat or it hits the edge of the glass first. That is why those stupid small protection things work. Kind of hoped they would have a scratch resistant GRP (Glass Reinforced Plastic) by now though that could be used.
My giant
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6600 lapped Asus P5n32-E 680i GeForce 9800GT 512MB 2x1GB (unused ATM) & 2x2Gb Corsair XMS2 PC6400 
Hard DriveOSMonitorPower
WDJS SATA-II 160GB + WD80GB + WDAAKS Raid0 320GB Aperature FSII 19" LCD Apevia DarkSide 600W 
Case
NZXT Zero 
  hide details  
Reply
My giant
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6600 lapped Asus P5n32-E 680i GeForce 9800GT 512MB 2x1GB (unused ATM) & 2x2Gb Corsair XMS2 PC6400 
Hard DriveOSMonitorPower
WDJS SATA-II 160GB + WD80GB + WDAAKS Raid0 320GB Aperature FSII 19" LCD Apevia DarkSide 600W 
Case
NZXT Zero 
  hide details  
Reply
post #42 of 95
be cool, wrap your tool... or in their case, now a vibrator.
post #43 of 95
Quote:
Originally Posted by Kirmie View Post
I think you wanted this info from the article. Mostly the difference in structure. I'm pretty sure "dropped" just means holding it and letting it go. Why didn't they video this?
Well it's a glass repair site, they obviously wanted to break it to show they still have a viable business model. I'm personally waiting to see if it blends.


Quote:
Completely agree though they way they described the difference between the new and older phones sounds like the situation you described in the last sentence. The "protection" will probably work wonders for the phones durability.
I was referring to the silicon gel cases there fyi. But yes, the glass is now flush with the case and might be a big problem when dropped onto a uneven surface.


Quote:
Duckie nailed it. The problem with glass should be obvious. Watch the Myth Busters where they try to get out of a submerged car by breaking the window. Once you get enough pressure in one focused spot it explodes. Like if there is a tiny rock when the face falls flat or it hits the edge of the glass first. That is why those stupid small protection things work. Kind of hoped they would have a scratch resistant GRP (Glass Reinforced Plastic) by now though that could be used.
Well, it's actually rather non-obvious. The problem with glass and any other ceramic is that there exist internal structural defects in the material that occur due to imprecise and uncontrollable processing conditions. These manifest as micro-cracks, pores, and contaminants in the material. Due to their nature, these defects cause discontinuities in the material which act as stress risers which require significantly less force to fracture when a load is applied to the material, hence they crack at these points and propagate throughout the whole material. Most ceramic materials tend to be very strong while undergoing compressive loading.

I don't believe there are any optical grade GRPs available. Typically the main two plastics used for optical grade components are PMMA and Polycarbonate. Once you add glass reinforcing fibers however, their light transmission and translucency becomes severely degraded.
post #44 of 95
Quote:
Originally Posted by nathris View Post
it's still only protecting against impact. My screen can still shatter easily from something hitting it or scratching it too. Also, my phone isn't going to be thrown at a wall. Chances are it's gonna hit face first, not edge.
Nemesis NE-α
(15 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core i7 4790k (Devil's Canyon) AsRock Z97 Extreme 4 Visiontek AMD 6990 Corsair XMS3 DDR3 1600 
Hard DriveCoolingOSMonitor
Samsung EVO 840 XSPC Raystorm Windows 8.1 Dell U2311H 1920x1080 IPS 
MonitorMonitorKeyboardPower
Dell U2311H 1920x1080 IPS Dell U2311H 1920x1080 IPS Ducky Blue Overclock.net Themed Mechanical Keyb... Corsair Silver 1kw  
CaseMouseAudio
Case Labs TH10 Logitech G502 Logitech 5.1 speakers w/ Onkyo Receiver 
CPUMotherboardGraphicsRAM
Intel Xeon W3520 i7 4.0ghz EVGA X58 Classified Visiontek 6990 GSkill 6GB DDR3 Pi 
Hard DriveOptical DriveOSMonitor
2x OCZ Vertex 60GB SSD ; 2x 1TB ; 2x 2TB Samsung BluRay Burner Windows 7 Ultimate 64x 3x Dell U2311H 23" 1080p IPS 
KeyboardPowerCaseMouse
Logitech G15 Gaming Keyboard SilverStone Strider 1000w Modular Power Supply Lian Li V2000 Plus Logitech G9 Gaming Laser Mouse 
Mouse Pad
Cyba Sniper Tracer (Acrylic Glass) 
  hide details  
Reply
Nemesis NE-α
(15 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core i7 4790k (Devil's Canyon) AsRock Z97 Extreme 4 Visiontek AMD 6990 Corsair XMS3 DDR3 1600 
Hard DriveCoolingOSMonitor
Samsung EVO 840 XSPC Raystorm Windows 8.1 Dell U2311H 1920x1080 IPS 
MonitorMonitorKeyboardPower
Dell U2311H 1920x1080 IPS Dell U2311H 1920x1080 IPS Ducky Blue Overclock.net Themed Mechanical Keyb... Corsair Silver 1kw  
CaseMouseAudio
Case Labs TH10 Logitech G502 Logitech 5.1 speakers w/ Onkyo Receiver 
CPUMotherboardGraphicsRAM
Intel Xeon W3520 i7 4.0ghz EVGA X58 Classified Visiontek 6990 GSkill 6GB DDR3 Pi 
Hard DriveOptical DriveOSMonitor
2x OCZ Vertex 60GB SSD ; 2x 1TB ; 2x 2TB Samsung BluRay Burner Windows 7 Ultimate 64x 3x Dell U2311H 23" 1080p IPS 
KeyboardPowerCaseMouse
Logitech G15 Gaming Keyboard SilverStone Strider 1000w Modular Power Supply Lian Li V2000 Plus Logitech G9 Gaming Laser Mouse 
Mouse Pad
Cyba Sniper Tracer (Acrylic Glass) 
  hide details  
Reply
post #45 of 95
Quote:
Originally Posted by OmegaNemesis28 View Post
it's still only protecting against impact. My screen can still shatter easily from something hitting it or scratching it too. Also, my phone isn't going to be thrown at a wall. Chances are it's gonna hit face first, not edge.
It's impossible for it to hit face first if you have a properly designed case unless it's hitting an uneven surface such as a rock or convex surface, geometrically impossible. If your case is properly designed and it falls onto a flat surface, it's either going to fall on the edge or fall on the case, not the screen.

If you notice on most cases the silicon material is raised higher than the screen itself.
Edited by vdek - 6/10/10 at 10:58am
post #46 of 95
Quote:
Originally Posted by vdek View Post
What if it is much stronger then regular glass? To me, it seems like they developed some sort of composite glass material by the amount that it was able to undergo strain without plastically deforming.
I highly doubt Apple invests in basic material research and development.

They selected this glass from a supplier.
Once again...
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
  hide details  
Reply
Once again...
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
  hide details  
Reply
post #47 of 95
Anything can be broken.
post #48 of 95
Quote:
Originally Posted by vdek View Post
It's impossible for it to hit face first if you have a properly designed case unless it's hitting an uneven surface such as a rock or convex surface, geometrically impossible. If your case is properly designed and it falls onto a flat surface, it's either going to fall on the edge or fall on the case, not the screen.

If you notice on most cases the silicon material is raised higher than the screen itself.
If you either watched the video I quoted, or the conversation that video was a response to, you'd notice that Im NOT talking about general cases but one specific one.

And when is a surface ever perfectly flat? Your wood floors in your house? Ok, because Im really afraid of breaking my phone on that.
Try city streets or sidewalks, rocks (like in the video), ect. That is where people drop their phones the most and have them break the most. Hell today I dropped my phone down some stairs earlier this morning and I'll tell you right now - it didn't matter what geometrically designed case was on it, the screen was going to get hit.

Even the one Im specifically talking about, the video, (which you took as me talking about all cases) the representative himself dropped the phone and it didnt land on the walkway like he thought. It landed on the damn rocks. He even says something like - it went face down, we might have a problem. Twice it happened. Now while the device is still functional, you cant tell in that video what the screen looks like. Unless you properly protect your device, having just bumper guards isn't going to protect the screen in most situations. You need screen protectors. But even then, if enough pressure/force applied and it's going to break no matter what.
Edited by OmegaNemesis28 - 6/10/10 at 11:15am
Nemesis NE-α
(15 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core i7 4790k (Devil's Canyon) AsRock Z97 Extreme 4 Visiontek AMD 6990 Corsair XMS3 DDR3 1600 
Hard DriveCoolingOSMonitor
Samsung EVO 840 XSPC Raystorm Windows 8.1 Dell U2311H 1920x1080 IPS 
MonitorMonitorKeyboardPower
Dell U2311H 1920x1080 IPS Dell U2311H 1920x1080 IPS Ducky Blue Overclock.net Themed Mechanical Keyb... Corsair Silver 1kw  
CaseMouseAudio
Case Labs TH10 Logitech G502 Logitech 5.1 speakers w/ Onkyo Receiver 
CPUMotherboardGraphicsRAM
Intel Xeon W3520 i7 4.0ghz EVGA X58 Classified Visiontek 6990 GSkill 6GB DDR3 Pi 
Hard DriveOptical DriveOSMonitor
2x OCZ Vertex 60GB SSD ; 2x 1TB ; 2x 2TB Samsung BluRay Burner Windows 7 Ultimate 64x 3x Dell U2311H 23" 1080p IPS 
KeyboardPowerCaseMouse
Logitech G15 Gaming Keyboard SilverStone Strider 1000w Modular Power Supply Lian Li V2000 Plus Logitech G9 Gaming Laser Mouse 
Mouse Pad
Cyba Sniper Tracer (Acrylic Glass) 
  hide details  
Reply
Nemesis NE-α
(15 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core i7 4790k (Devil's Canyon) AsRock Z97 Extreme 4 Visiontek AMD 6990 Corsair XMS3 DDR3 1600 
Hard DriveCoolingOSMonitor
Samsung EVO 840 XSPC Raystorm Windows 8.1 Dell U2311H 1920x1080 IPS 
MonitorMonitorKeyboardPower
Dell U2311H 1920x1080 IPS Dell U2311H 1920x1080 IPS Ducky Blue Overclock.net Themed Mechanical Keyb... Corsair Silver 1kw  
CaseMouseAudio
Case Labs TH10 Logitech G502 Logitech 5.1 speakers w/ Onkyo Receiver 
CPUMotherboardGraphicsRAM
Intel Xeon W3520 i7 4.0ghz EVGA X58 Classified Visiontek 6990 GSkill 6GB DDR3 Pi 
Hard DriveOptical DriveOSMonitor
2x OCZ Vertex 60GB SSD ; 2x 1TB ; 2x 2TB Samsung BluRay Burner Windows 7 Ultimate 64x 3x Dell U2311H 23" 1080p IPS 
KeyboardPowerCaseMouse
Logitech G15 Gaming Keyboard SilverStone Strider 1000w Modular Power Supply Lian Li V2000 Plus Logitech G9 Gaming Laser Mouse 
Mouse Pad
Cyba Sniper Tracer (Acrylic Glass) 
  hide details  
Reply
post #49 of 95
Eh, it all depends on what and how it lands on. You can full force throw it into the ground and if it lands right, it won't do much damage to the screen, if any. Drop it from 2 feet perfectly onto a jagged object, such as a tiny rock, and it may crack it. I never put much faith in the testing of something like this unless they use a large amount of phones and testing methodologies. One phone and a few drops are not enough data to reach any kind of conclusion. We are not even sure if that was the same glass used in the real phone. It could very well be different, being a display model.
post #50 of 95
i thought it was common sense that glass breaks when dropped. every iphone owner knows the risk, or should know
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Hardware News
Overclock.net › Forums › Industry News › Hardware News › [FY] First Broken iPhone 4 Shows New Glass Isn't That Resistant.