Corning Gorilla Glass demo - TiPb at CES 2011

Chances are, even if it's not been confirmed and Corning is not allowed to disclose it, your phone or tablet device might just have a super tough Gorilla Glass screen. Ahem. So how tough is it? We caught up with the folks from Gorilla Glass live at CES 2011 and they gave us the full-on scratching, cracking, bending, breaking demo. (And as anyone who's ever dropped their iPhone or iPad knows, your heart breaks along with the glass.)

Check out the video above and let us know if it makes you feel any better about having glass on both sides of your iPhone 4...?

Corning Gorilla Glass demo - TiPb at CES 2011

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Rene Ritchie

EiC of iMore, EP of Mobile Nations, Apple analyst, co-host of Debug, Iterate, Vector, Review, and MacBreak Weekly podcasts. Cook, grappler, photon wrangler. Follow him on Twitter and Google+.

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Corning Gorilla Glass demo - TiPb at CES 2011


The back is just regular glass, that's why the whole glassgate thing popped up. I don't even know if the front is to be honest I'm not gonna be the first to find out either.

That would explain why on my first iPhone 4 the back cracked after it slid off my lap when I was sitting and why on my second iPhone 4, it scratched when it fell out of my hands when I was on the car and dropped no more than 6 inches.

Either the iPhone doesn't have gorilla glass or it's really not as great as they claim from all the broken iPhone screens I've seen.

Totally agree with u sting my friend dropped his on the bottom right corner front and back shattered wish i had pics to show u guys would cry i almost did until i got my iphone converted to white a total waste of money trust me on this no one even think about it total garbage waste of good money

Really wierd why all the silence on this. Is there a reason Apple would not want Corning to say whether or not Gorilla glass is being used?
Only thing I can think of is that Apple is using a homegrown version and NOT Gorilla Glass, and Corning doesn't see a need to advertise that in case Apple changes their mind and decides to order a zillion. i.e. not burning their bridges.
Or else it really is Gorilla Glass and it just sucks.

The back of my iPhone 4 got scratched in my pocket in the first week. (The front has always had a screen protector.) So, I assume the back is not Gorilla Glass or Gorilla Glass is not very good.

I see this two ways: 1) If it IS Gorilla Glass, wouldn't you think Apple would be playing that fact up?? 2) If it IS Gorilla Glass, and all the glass backs keep breaking, would Corning want THAT advertised? They are promoting this product as almost bullet proof, yet a simple fall from 3 feet destroys it. They had the perfect back on the 3G / 3GS, don't know why they had to go to this. Will be real interested to see if this makes it to #5.

According to Apple the glass (both front and back) on the iPhone is "aluminosilicate glass — the same type of glass used in the windshields of helicopters and high-speed trains" (just normal glass doped with aluminum oxides to make it stronger and more scratch-resistant than normal glass). So it is not "Gorilla Glass" but possibly developed by Corning none the less. Which would explain why Corning can't discuss it. Also remember that just like that nice demo done for Rene at CES and Apple's own testing video, it's not real world use cases. Drop any piece of glass less than 1/8 of an inch thick and I'm 99% sure it will break, especially if it's attached to a weighted object like a phone. Tempered, chemically strengthen, gorilla, car, train, you name it glass is stronger than standard plain glass (fine drinking glass, glass figures, etc).
The iPhone 4 screen is harder to break but like all things it is breakable. There are several YouTube videos; one in particular of a guy purposely dropping his iPhone 4 in different ways several times on to concrete before the glass actually cracks. It's all a matter of physics and how an object hits the glass which determines whether or not glass breaks.

Like others have said, if it is gorilla glass, then gorilla glass is crap. My iPhone 4 had scratches on the back within hours of its purchase. I dropped it from standing height last month and the front completely shattered.

The most likely scenario, IMHO, is that (a) Corning touted the use of Gorilla glass at a robust premium to standard glass, (b) Apple didn't get the price that they wanted, and (c) Apple went with an Alumino-Silicate strengthened glass (same fundamental idea as Gorilla glass) from a 3rd party vendor at the price that they liked.

Who said anything about iPhone 4 having Gorilla Glass? It doesn't (just to clarify). The only technology that uses them are a couple of phones by samsung, and samsungs tablet. I'm not sure but their are some other phones with it too. iPhone is just regular glass.