Apple Watch Series 4 teardown reveals the magic behind the redesigned wearable

Apple Watch Series 4 teardown reveals the magic behind the redesigned wearable
The Apple Watch Series 4 is about as popular as expected, needing around a month to ship from the manufacturer’s US e-store if you order it today, but if you’ve already received an early copy, it might not be a good idea to start tearing it down and verify its repairability.

We know you’re curious just how radically redesigned the beautiful new smartwatch is on the inside, but leave it to iFixit’s experts to offer you a complete look under the 44 mm hood of the larger 2018 variant.

A single proprietary tool is enough to remove the LTPO OLED Retina display, which means screen replacements are “difficult but do-able” at home... as long as you’ve done something like that before.

A familiar trio of cables holds the screen in place, and once those are removed, reaching the battery is... not as easy as you think. “Incredibly tiny” screws are “all over the place”, proving a moderate repair hinderance and major pain in the keister.

Skipping a few steps in the teardown process, we’re happy to inform you Apple was able to squeeze a little bit of extra juice into an impressively slim body. Namely, at least four percent more battery footprint than the Apple Watch Series 3, or 1.12 Wh (291.8 mAh at 3.81 V) capacity in total.

That 291.8 mAh cell is supposed to last “up to 18 hours” on a single charge, which is exactly the same advertised autonomy as that of the Series 3. But the dual-core S4 processor inside the Apple Watch Series 4 is allegedly twice as fast as last year’s S3. The good news doesn’t stop there, as the SiP (System in Package) is easy to remove with a screwdriver and a little patience (no glue), while its “secrets” are unfortunately impossible to “extract.”

Board-level repairs are a non-starter, which lowers the overall score to a 6 out of 10. That’s a perfectly acceptable repairability grade for an Apple device, tying the Apple Watch Series 3, iPhone XS, and iPhone XS Max.

source: iFixit



1. T12RYK

Posts: 849; Member since: Jun 10, 2011

Amazing Apple! Just AMAZING how beautiful this watch is on the inside and out. Outstanding achievement! Bravo!

2. T12RYK

Posts: 849; Member since: Jun 10, 2011

:-) - Just amazing!!


Posts: 63; Member since: Oct 11, 2016

Did you also get the $489 leather strap? If not ,you are really missing the best strap ever....yea

14. T12RYK

Posts: 849; Member since: Jun 10, 2011

I went for the Hermes model at £1,299.99. The innovation on this Hermes strap is outstanding!

3. ikenvape

Posts: 309; Member since: May 28, 2014

Radically redesigned elegance in present form! The most evolutionary, no revolutionary beauty that my eyes ever laid had the privilege to lie on. *Faints Lol seriously though. That really is impressive. They compacted so much tech very nicely.

4. Cat97

Posts: 1929; Member since: Mar 02, 2017

Looks like a miniature phone on the inside.

5. thxultra

Posts: 457; Member since: Oct 16, 2014

Really impressive how much they pack into such a small device.

7. darkkjedii

Posts: 31304; Member since: Feb 05, 2011

Smart watches are the future.

8. thxultra

Posts: 457; Member since: Oct 16, 2014

Loving my series 4. I think watches have lots of room for innovation also so expecting to see more changes with the apple watch then the iphone. This year was a huge step up.

12. darkkjedii

Posts: 31304; Member since: Feb 05, 2011

Huge indeed, I’m loving the new features and screen size. Apple did a great job with it.

6. MarvzIsFallen

Posts: 646; Member since: Aug 11, 2017


9. Jrod99

Posts: 759; Member since: Jan 15, 2016

No buyers remorse on my purchase. Traded series 3 for credit toward series 4. Nice piece of tech.

10. zelas

Posts: 41; Member since: Sep 25, 2013

I like the new series 4 because of rounded corners and seamless apple eco-system; Connecting my apple watch/airpods is significantly faster and easy than the other counterparts. Also, it has EKG. :) I dont why I am so keen about ECG?!

13. cheetah2k

Posts: 2271; Member since: Jan 16, 2011

Magic...?! WTF? Magic would be lasting 3-4 days on a single charge - yet apple's reputation precedes itself and maintains that "less than a full day" at 18 hrs.. Fail

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