Sir Lancelot’s Armor Holy Grail Glass Screen Protector for iPhone 4/4S review

We use affiliate links. If you buy something through the links on this page, we may earn a commission at no cost to you. Learn more.


We bring our smartphones everywhere with us, and we want them to last.  Well, to last long enough to get through the 2-year contract so we can upgrade to the next one.  Part of the device protection that many people opt to use is a screen protector.  Although many of the smartphone manufacturers claim that screen protectors are not needed for their products, I still see lots of people using them.  I’ve used plastic film-type screen protectors before, but have been curious about the hard, tempered-glass screen protectors that have become more popular.  Sir Lancelot’s Armor began life as a Kickstarter project that was successfully funded and has now become a company in its own right.  I was recently given the opportunity to try their Holy Grail Glass Screen Protector for my iPhone 4S.


I’ve used screen protectors on my devices for as long as they have been available.  I think I’ve had them going back to my Palm Vx, up through my iPaq, my Blackberry 8700 and Curve, my iPhone 3GS (see my review of the iWrap) and now my iPhone 4S.  I’m somewhat embarrassed to report that for a while now I’ve been using cheap-o plastic film-type screen protectors that I bought in bulk on eBay.  I was never happy with my installation of them, and I had to replace these things every few weeks.  I’d had my eye on the hard glass screen protectors that have become increasingly popular, but had never become interested enough to buy one.  The idea with the tempered glass screen protectors is that not only are they highly scratch resistant, they can absorb the energy from an impact and dissipate it throughout the protector rather than transferring it to the phone’s screen.  When Sir Lancelot’s Armor gave me the opportunity to try one of their Holy Grail Tempered Glass Screen Protectors, I was quite willing and eager.

Specs & Options

  • Materials – Proprietary tempered glass and silicone-based adhesive
  • Colors – Black or White
  • Devices – Currently available for iPhone 4/4S, iPhone 5, iPad 2/3/4/Mini,  Samsung Galaxy S4, Samsung Note 2
  • Warranty – Lifetime



Exterior packaging is a standard clam shell corrugated cardboard box, with lightning bolt-wielding Sir Lancelot’s Armor logo emblazoned on front of course.


Inside the exterior packaging was something I had not expected…


…a rather ornate, old school-looking “tin” with a base and lid.  I dig the look of the artwork on the tin.  Very “Flash Gordon”-esque.



  • Holy Grail Glass Screen Protector
  • Button covers (white and black)
  • Screen cleaning cloth
  • Screen cleaner


The installation instructions are four steps.  Pretty simple.



The Holy Grail is a a sheet of tempered glass sized to fit over the entire face of the iPhone.  As seen in the image above, it has an opaque frame portion, transparent portions, and cutouts.  The opaque portion is available in either black or white to match the the color of your iPhone’s face—or I suppose you could get one that is opposite from your iPhone if you wanted.  The transparent portions fit over the proximity sensor, the front-facing camera and of course the touch screen itself.  The cutouts fit over the speaker and the home button.  There are other tempered-glass screen protectors on the market that do not have the opaque portion as the Holy Grail has, but are completely transparent.  Although I’m sure some would prefer the fully transparent version, I actually like the Holy Grail’s design.  It basically mimics the iPhone’s actual face, just offsetting it a bit.



In comparison to the plastic film-type screen protectors, I found the Holy Grail to be much easier to install.  I attributed this to its rigidity, which seemed to make aligning it and keep it aligned easier than the thinner, floppier plastic versions.  In addition, it didn’t require any type of liquid to activate the adhesive like many of the higher-end plastic film-type protectors.


The Holy Grail also includes two home button covers, one each in both white and black.  The home button cover is basically a soft plastic dome that attaches over the home button using pressure-sensitive adhesive (in other words, it is what some might call a “sticker”).  The home button cover was thick enough that it protruded beyond the surface of the Holy Grail.  Considering that the iPhone’s home button is actually concave, not convex, this felt too weird to me, so I removed the home button cover after a few minutes of use.



As mentioned above, I was able to align and place the Holy Grail fairly successfully the first time.  However, it was just a bit off center from where I wanted it, as shown in the images above.  The Holy Grail is billed as removable and reusable, so I did just that.  The Holy Grail’s silicone-based adhesive is placed only behind the opaque portion, so I slid a fingernail under one corner and gentle peeled the protector off the iPhone’s face.  It freaked me out a bit as I watched it flex slightly, but it didn’t break.  There was no adhesive or any other residue left behind.  I simply carefully re-aligned the edges again, pressed down and it was exactly where I wanted it. sirlancelots_iphonearmor_11

Unlike the thin plastic film type protectors, the Holy Grail leaves no bubbles, wrinkles or distortion.  Because it is actually glass and is in very close proximity to the iPhone’s face, there is no loss of accuracy to the touchscreen.  On second thought, after having used it for a few weeks, there might be a tiny loss of sensitivity, but this might just be my fingers losing dexterity with age.


Because the Holy Grail is precisely sized to sit directly over the iPhone’s glass touchscreen, only slightly undersized around the outer edge, I was able to use it with my Magpul Executive Field Case and the fit was perfect.


I liked the Sir Lancelot’s Armor Holy Grail Glass Screen Protector.  It was easier to install than any of the previous plastic film-type screen protectors I’d used in the past, and easy to remove and reposition.  There were no bubbles, wrinkles, distortion or reduction in functionality including no loss of sensitivity of the touchscreen.  After installing it, I literally didn’t even perceive that it was there.  It is more expensive than a film-type screen protector, but I think the benefits outweigh the additional cost.  I’m quite happy with it all around.

Updates 04/09/15

I was fairly happy with this screen protector for a while, until I started to notice that it seemed to decrease my iPhone’s touchscreen sensitivity. When I eventually tried to remove it, it cracked into a million pieces. Thankfully neither me nor my iPhone was damaged.


Source: The sample for this review was provided by Sir Lancelot’s Armor. Please visit their site for more info.


Product Information

Manufacturer:Sir Lancelot's Armor
  • iPhone 4/4S (others available)
  • + Easy to install & reposition
  • + Hard, smooth surface unlike plastic film type
  • + No bubbles, warping or distortion
  • + No degradation of capacitive touch input
  • - More expensive than plastic film type

6 thoughts on “Sir Lancelot’s Armor Holy Grail Glass Screen Protector for iPhone 4/4S review”

  1. Gadgeteer Comment Policy - Please read before commenting
  2. Don’t believe all the testing that is done on this will actually protect your phone, because it will not! The fancy packaging, the overpriced screen protector does nothing but protect itself. While the screen protector does not crack or scratch easily, the glass underneath is in NO WAY protected! I dropped my phone from less than 2 feet and now have a cracked screen underneath the beautiful “screen protector”.

  3. @Randy – Interesting. So you dropped your phone from less than 2 feet and the screen protector was undamaged, but the phone’s screen cracked? Was this screen protector a Sir Lancelot’s Armor Holy Grail glass screen protector as reviewed here, or another brand?

    Also, although the company claims scratch and impact resistance, this may not translate to the situation your described, such as a drop, which may impart a different loading condition on the phone/screen protector combination than the testing that is depicted on the product page.

    I am by no means defending the Sir Lancelot’s Armor Holy Grail glass screen protector, I am merely trying to understand the situation better and offering suggestions. I would suggest you contact the company that made your screen protector and see if there is any recourse (though I wouldn’t hold my breath on that).

  4. I lifted the edge on mine to reposition it after installing it due to bad alignment and the corner cracked. Think I’m over screen protectors.

Leave a Comment

Your email address will not be published. Required fields are marked *