hi I'm Kevin with iFixit and today we're
here to tear down the Apple watch Series
five the process of tearing down the
Apple watch series five is exactly the
same as the series four apply a ton of
heat use a curved blade for some
white-knuckle prying from the top of the
watch and it opens up once you're in
your met with some of the tiniest why
triple zero screws and cable brackets
that you'll ever see even though the
interior form factor didn't change much
we did find some interesting things
inside the series 5 has an improved
ambient light sensor embedded under the
OLED panel usable here thanks to x-rays
provided by creative electron the
battery for this 40 millimeter series 5
is a bit of a mystery
unlike the 44 millimeter version of the
series 5 the 40 millimeters battery is
encasement aluminum pouch it also got a
10% increase in capacity and is now
rated at 0.9 for 4 watt hours up from
0.85 8 in this series 4 interestingly
the 44 millimeter version only got a one
point 44% increase and has a fairly
standard encasement we're still unsure
of what all these differences mean for
right now but we're currently
researching the matter another change
although slightly obvious is the encased
s5 chip which hides the bulk of the
series 5s upgrades in a system in
package for me though the most
interesting change in the Apple watch
series 5 is something you can't really
see it's the always-on LT Pio display
what is an LT Pio display you ask I'm
glad you asked because I wrote a giant
blog post about it for I fix it calm the
display on an Apple watch is an OLED
display much like a smartphone and the
type it is is LT Pio which stands for
low temperature poly-silicon oxide
that's a hard word to say but let's just
say that there is a different
composition of the thin film transistors
that sits underneath the organic
material and the Apple watch this gives
it some power savings but actually it's
not that new
the Apple watch series 4 had the same LT
Pio technology in it but it didn't have
was Apple's ability to use their
software and technology to change the
refresh rate of the display the refresh
rate is basically how often the display
or the screen looks for new content from
your computer so if it's running at 60
Hertz it's checking 60 times a second to
see if there's something new to display
you don't need that when your watch is
down by your side not doing anything
so Apple lowers the refresh rate down to
one Hertz or once per second that's how
often the second hand moves that's a big
power savings that is at present in the
series v that wasn't in the series for a
new display teka side we gave the Apple
watch series 5 a 6 out of 10 on our
ability score with 10 being the easiest
to repair on the plus-side
watch band replacements are still fast
and simple screen replacements are
difficult but doable battery
replacements are pretty straightforward
once you're inside the case and while
they're not proprietary incredibly tiny
tripoint screws are a repair hindrance
on the downside several of the component
flex cables are mounted directly to the
s5 package requiring skilled micro
soldering to replace and lastly the
resonant case s5 system makes most
board-level repairs impossible
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