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[Reviews] Xiaomi Mi3 (NVIDIA Tegra4) tear down

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21:30, Sep-09-2013 | From PC
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Go to reply no.
This post was edited by dreamingon 10:50,Sep-10-2013

2013090622541718568.jpg

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There're only two screws in its SIM card slot. And one screw has been labled as fragile by Xiaomi. So if you try to open the phone yourself, you may lose warranty.
2013090622542440844.jpg

The back cover is plastic, and it's softer compared with the polycarbonate cover used by Nokia 920. There's a graphite radiant sticker on the top of the back cover.


This is the inside the Mi3. It doesn't use a whole mainboard since it's thickness is only 8.1mm
2013090622542896361.jpg

The plasitic cover on top is used to fix the mainboard, it can also shield some radiation. But it's main function is antenna.

2013090622543024280.jpg

This patch is responsible for the NFC function. There are two ways of using the NFC patch on a phone now, one is using it independently like Mi3, and the other is putting it on an exchangable battery. The two methods bring the same user experience.
2013090622543270758.jpg

3.5mm headphone jack
2013090622543461077.jpg

On the bottom is mainly the speaker components. It also serves as  a antenna.
2013090622543673236.jpg

Screws on the phone
2013090622543815195.jpg

It used the three piece design since it needs a big battery, and its thickness is only 8.1mm. This way you can control the thickness, but it's hard to make a big battery.
2013090622544019554.jpg
It used Samsung battery cell. The width of the battery is 64.71mm.
2013090622544225472.jpg

The top mainboard is fixed onto the mainboard by FPC and screws.

2013090622544471951.jpg

The Flexible Printed Circuit that connects the top and the bottom has the microUSB connector that supports OTG, and the speaking microphone, etc.
2013090622544651350.jpg

The Mi3 used the standard SIM card slot.
2013090622544840108.jpg

IPEX high frequency terminal wire. It's responsible for signal transmission. Phones using this wire have a better signal. Mi3 added rubber strip to fix this wire.  
2013090622545052267.jpg

The middle cover was manufatured on July, 2013.
2013090622545200466.jpg

ATMEL MXT540S chip. It's used to enhace the touch sensitivity.
2013090622545454744.jpg

The back and front camera.
2013090622545691863.jpg

Back of the mainboard.
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NVIDIA Tegra4 processor.
2013090622550145820.jpg

Skhynix 2GB RAM.
2013090622550382939.jpg

BROAOCOM BCM4334. It's responsible for WIFI signal.
2013090622550749536.jpg

T1 37C8311 chip.
2013090622550749536.jpg

SPREADTRUM SC8803 chip. This is the baseband chip for Mi3 TD.
2013090622551175413.jpg

2zc27 d9lqq chip.
2013090622551357932.jpg

MAX77665A chip. It's for power management.
2013090622551571651.jpg

INVENSENSE MPU-6050 chip. It's Mi3's gyroscope.
2013090622551785370.jpg

Front the mainboard. The chips in the front all have shild covers.
2013090622552033408.jpg

SanDisk 16GB flash storage.
2013090622552262726.jpg

RF9812 chip. It's for RFID.
2013090622552482685.jpg

SPRD SR3500 RF transceiver chip.
2013090622552752563.jpg

42L73CWZ chip.
2013090622552994362.jpg

The vibration module.
2013090622553276720.jpg


2013090622553513838.jpg
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21:38, Sep-09-2013 | From PC
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whoow ..
Nice disassemble :P
Keep it up :P

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21:44, Sep-09-2013 | From PC
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@dreamingon: could you fulltranslate all the pitures above and give some opinions on built quality of xiaomi Mi3?

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04:48, Sep-10-2013 | From PC
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hvung1982 replied at 2013-9-9 21:44
@dreamingon: could you fulltranslate all the pitures above and give some opinions on built quality o ...

+1 no offense buddy but please this is an English forum for MIUI
Quality over quantity..

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 Author| 10:07, Sep-10-2013 | From PC
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Reply hvung1982 Add Thread

Sorry, I didn't have time to do that yesterday. I'll update it soon.

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16:15, Sep-10-2013 | From PC
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I remember in release day, it will use battery from LG right???

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16:23, Sep-10-2013 | From PC
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The batt is built-in? what if it hangs up or something?

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miui-uk I asked a dev that question - his reply - "Send it back for repair" lol :-) I guess pray for ADB or wait for the battery to discharge :-(  06:38, Sep-13-2013

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18:55, Sep-10-2013 | From PC
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Built in means you cannot pull out the battery so easily, that's why we have to see/read this thread.. :D

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09:03, Sep-11-2013 | From PC
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no need. A long press on power button triggers a power cycle.
This is a feature of all (good) built-in battery phones

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miui-uk true :)  06:38, Sep-13-2013

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06:37, Sep-13-2013 | From PC
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Last0ne replied at 2013-9-10 08:15
I remember in release day, it will use battery from LG right???

Correct :-) big partnership with LG was announced as well as Nvidia :-)
One of the 1st International MIUI users and Founder of Xiaomi European Community (xiaomi.eu), Original MIUI ROM English Translator from 2010 to 2015. Translator for Mi Jia and more.

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