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  • Before we get started, I highly recommend NOT attempting this project in any way, shape,

  • or form.

  • Apple has made this repair impossible on purpose.

  • I did find a few methods that work for removing the back glass on an iPhone 8 and an 8 Plus,

  • but the risks involved are extraordinary and your phone might very well end up looking

  • worse after the repair than it did before you started.

  • Now that we have that out of the way, I am going to attempt this repair while leaving

  • all the guts of the phone intact.

  • So let's get started.

  • [Intro]

  • There are a few videos online of people using extreme heat to remove the broken glass on

  • their iPhones.

  • The heat is so extreme, I figured it might be safer to move to the other end of the thermometer

  • and see how cold we can get the adhesive before it gets brittle and loses its effectiveness

  • so it will break off with the glass.

  • Putting your phone in a conventional freezer for a few hours will not work since a standard

  • freezer is about zero degrees Fahrenheit or negative 18 degrees Celsius And the epoxy

  • holding the glass to the metal inside of the iPhone is still effective at that temperature.

  • If you are considering doing this yourself, first of all, you're crazy, and second, make

  • sure you watch this video all the way through.

  • I explain a lot.

  • My first attempt is with the refrigerant I got off of Amazon.

  • It brings the temperature down to about negative 60 degrees Fahrenheit Tetrafluoroethane is

  • the chemical used inside of this spray, and it can displace oxygen, meaning that if use

  • it in an area that's not well ventilated, you might suffocate and die.

  • So try to avoid that part.

  • The can was inexpensive and seems to be working for the most part.

  • You can see the frost start to accumulate over top of the glass as the temperature drops.

  • The lower the temperature, the less holding ability the adhesive has under the glass.

  • Remember, right now we're working at about negative 60 degrees Fahrenheit Safety glasses

  • are pretty mandatory since glass is basically going everywhere, so that negative 60 is working,

  • but it's still taking longer than I would like.

  • After about 10 minutes I've only cleared 20% of the glass.

  • Hit that subscribe button if you haven't already and let's take this repair to the next level

  • with a safety liquid that's much much colder.

  • Liquid nitrogen is involved in our next attempt at removing the glass in the back of an iPhone,

  • but don't freak out because it's actually not that hard to get a hold of.

  • Luckily I'm pretty good friends with the King of Random over here, and he has a good supply.

  • But Grant, tell us where people can get liquid nitrogen on their own if they need some.

  • [Grant] If you guys want to get some liquid nitrogen, it's actually super easy to get.

  • It would be a lot closer than you think if you get on Google or Yellow Pages if anybody

  • uses that anymore.

  • Look for a welding and gas supply company.

  • They're probably going to have some.

  • The only qualifier is you're going to need some safe way to transport.

  • So you're going to need something like a Dewar, spelled D-E-W-A-R.

  • A Dewar.

  • It's basically a glorified insulated thermos made for liquid nitrogen.

  • So if you have one of those, no permits are required and it costs you about $5 per liter.

  • If you go in there with something like a thermos, you can pick up one of these for maybe $10

  • or $20.

  • My first one was $5 at Walmart.

  • Depending on the person you talk to, they may let you take some liquid nitrogen.

  • [Zack] There's no guarantee this is going to work, but huge thanks to the King of Random

  • for attempting this experiment with me.

  • Let's see what happens.

  • [Scalding water sounds]

  • [Zack] Alright, so now the phone is able to sit inside of the liquid nitrogen and hopefully

  • it gets to temperature.

  • We want that back panel and the metal to be about the same.

  • And I can hear the glass cracking.

  • Hopefully that's the epoxy or the adhesive underneath the glass and the metal.

  • Whoa.

  • [Zack] Alright, just getting it back to temperature again.

  • Keep in mind that there is clear adhesive on the front of the phone holding the front

  • glass to the LCD, which is also affected by liquid nitrogen.

  • I'm making sure to only allow the back of the phone to dip into the liquid so the screen

  • doesn't get destroyed.

  • As the liquid nitrogen evaporates into just regular nitrogen, it's a dielectric gas, meaning

  • it won't affect the internals of the phone.

  • The extreme cold, on the other hand, might.

  • Liquid nitrogen is negative 321 degrees Fahrenheit So keeping the liquid off the internal circuits

  • as much as possible is important.

  • There are specific cryogenic machines that circulate liquid nitrogen under a metal plate

  • made specifically for cell phone repair.

  • So if you have a repair shop and are doing this on a regular basis, you might want to

  • invest in one of those.

  • It's a little more controllable than the pure liquid.

  • It took about 7 minutes to remove all the glass from the iPhone using this liquid nitrogen.

  • Much quicker than the Tetrafluoroethane.

  • The camera frame is welded to the metal frame of the iPhone and it might be possible to

  • preserve this, but since my lens was already cracked from a previous drop test, I'll just

  • crush out the lens with my pliers.

  • Replacement lenses are pretty inexpensive on Amazon.

  • I am removing the camera lens last because glass dust can get inside the optical image

  • stabilization mechanism and cause the focus to stop working.

  • Like I mentioned before, there is quite a bit that can go wrong during this operation.

  • Luckily the phone still works and turns on.

  • Thumbs up for that.

  • The lithium battery does need to get back to room temperature before it will behave

  • like normal.

  • So we were successful in removing the back glass panel.

  • What do you think about that?

  • [Grant] I think it looks crazy.

  • You know, I almost feel like you should just take some epoxy and make see-through epoxy

  • and just keep the phone that way cuz that's a pretty intense look.

  • I'm actually really surprised that it turned back on.

  • I mean liquid nitrogen I wasn't so worried about, I was just worried about the condition

  • of this phone.

  • Blown away that it's working.

  • [Zack] So what do think...with the liquid nitrogen inside of the phone, are we more

  • worried about the contacts like the solder points, or the battery being disrupted by

  • the liquid nitrogen?

  • What's the weakest point inside with cold temperatures?

  • [Grant] I honestly think contraction is probably going to be the weakest point because liquid

  • nitrogen itself isn't going to damage anything.

  • It's not going to affect chemically anything inside of the phone.

  • All it's going to do is contract.

  • It's going to freeze things to the point where they contact.

  • So if there's anything in here that's breakable, like maybe solder points, if they get too

  • cold, they could snap.

  • But it wouldn't be because of the chemical reaction at all.

  • So I love playing with liquid nitrogen for that reason.

  • It's very non-toxic itself, so very noncorrosive.

  • It doesn't do any damage.

  • It's like using pure alcohol on this thingonce it's gone, it's gone.

  • [Zack] Well, if you have not seen it, Grant Thompson has been able to make liquid nitrogen

  • in his basement.

  • I will link that video here.

  • Now let's see what happens when we take it to the opposite end of the temperature spectrum

  • and use heat to try to remove the back glass panel.

  • [Zack] This time I'll be working on a cracked iPhone 8 Plus.

  • Apple's out of warranty repair for this piece of glass is currently an insane $399.

  • We've seen that Apple's epoxy looses its effectiveness as the temperature drops past negative 100.

  • Now let's see what temperature the iPhone epoxy starts to liquefy at the other end of

  • the temperature spectrum using heat.

  • Once again, while iPhones might survive the extreme temperatures during the short repair,

  • there is still plenty that can go wrong, so I don't recommend doing any of this to your

  • phone.

  • It's much safer just to put your phone in a case or slap a skin on it to hide the cracks,

  • and just pretend you never dropped it.

  • And if you're mad that iPhones aren't repairable, vote with your wallet and get something else.

  • One thing I did wrong with this phone is I pulled off the camera lens too early, exposing

  • the fragile plastic sensors to heat and glass dust early on.

  • If I ever do this again, the camera lens should come off last.

  • I found this sweet spot to liquefy the adhesive around 350 degrees Fahrenheitjust hot

  • enough to melt your fingers off and start your house on fire.

  • When Steve Jobs and Apple were designing the first iPhone, they specifically sealed it

  • shut because Steve Jobs didn't want people fiddling around inside their phones, not even

  • to change the battery.

  • So this new, unrepairable glass design is right on par with what Steve would have wanted

  • if he were still here.

  • I learned a lot about Steve Jobs from his biography on Audible, which I'll link down

  • in the video description if you're into that kind of thing.

  • The guy might have been a bit crazy and not so nice to people who want to fix their expensive

  • electronics, but his life story is very interesting.

  • Audible will let you download his book for free with a 30 day trial.

  • Just go to Audible.com/jerryrig.

  • Or text the wordjerryrigto 500-500.

  • Even if you cancel your trial, you get to keep the book, it's a win-win.

  • I normally listen while I'm at the gym or running outside during the summer months.

  • If you remember, it took me about 7 minutes to clear the glass off the back of the iPhone

  • 8 using liquid nitrogen, but as of now, it's been about 25 minutes since I started using

  • the heat gun.

  • A common hair dryer, which I don't own, would not be near hot enough for this projectyou

  • need a heat gun.

  • I do feel like the liquid nitrogen was a bit easier.

  • It's hard to keep the phone heated to that blistering 350 degrees it takes to liquefy

  • the adhesive under that glass layer.

  • As soon as the temperature drops below 300, the adhesive solidifies again.

  • After getting all the glass off and letting the phone cool down to room temperature, I

  • turned it on and everything is still working, lucky for us.

  • You can see both phone here side by side.

  • Now let's get the replacement panels back on the phones.

  • Fun fact: Apple does not sell replacement parts for their