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[Tools, Tips & Tutorials] [MIUI Device Classroom] Lesson 44: All About Ceramic in Phones and Devices!

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Lesson 44: All about ceramic in phones and hi-tech devices


Hey Dear MIUIers!
Hello and welcome to our new MIUI Device Classroom thread. It's time for our knowledge growth again. Our previous lesson was made by @rahul_09 and he taught us All About Power Banks. If you haven't seen it, you should definitely do it! And today I will try to guide you through ceramic and use of it in mobile and hi-tech devices. Let the lesson begin!

zirconia_ceramics.jpg

What is ceramic?

The word ceramic itself is derived from the Greek word κεραμικος (keramikos), which means "having to do with pottery". This term covers inorganic nonmetallic materials that are hardened by baking at high temperatures. Before the high technologies came into our lives this word has been always associated with traditional clays - materials made into pottery, dinnerware, building materials like bricks, tiles and the like. However, since those times we've discovered new ceramic materials, which are not simple clays, but more complex and advanced materials. These new types of ceramic are called "advanced ceramic" and are widely used in nearly every aspect of our lives, including cars, aerospace, defence, environmental, fiber-optic, medical and other technologies. Do you know what other technologies use advanced ceramic? It's cellular phones and smartphones and personal computers.

Did you know?

NASA's space shuttles have around 34,000 ceramic tiles, each. Those are used for protecting from heat produced when space ships re-enter Earth atmosphere.
nasa_shuttle.png


Advanced ceramics are made of various types of materials including traditional silicate-based and other types as well. But generally they are classified based on the composition type:

1. Oxides: alumina, zirconia.
2. Non-oxides: carbides, borides, nitrides, silicides and silicates.
3. Composites: combinations of two previous types.

Depending upon the group the ceramic is included into, it will exhibit different properties. Different primary chemical element also impacts different properties to the ceramic.

Properties of ceramic and where they are used

Each material used in technologies nowadays needs to have some unique properties. They make the material most suitable for using in a certain place for a certain purpose. Let's have a look on ceramic properties making it be an irreplaceable thing here or there.

Superconductivity

Superconductivity is a phenomenon occurring in some materials. It can be characterized by zero electrical resistance and exclusion of the interior electromagnetic field. Superconductivity allows creating most powerful electromagnets we know.
It's the least studied property of ceramic. Why? Because nobody knows the exact reason for it to be present. All we know now is ceramic materials show superconductivity under some conditions (extremely low temperature for example).


superconductivity.jpg

Superconductivity: A magnet levitates above a piece of superconductor cooled to -196°C.

Semiconductivity

Semiconductors are solids, whose electrical conductivity can be controlled in a very wide range, either permanently or dynamically. They are super-important in technology and are essential in all modern electrical devices from PCs to phones and others. Semiconductors are used in integrated circuits, CPUs, GPUs... Well, everywhere actually.

As for ceramics having semiconductivity properties, they are mainly oxides of transition elements, for example Zinc Oxide (ZnO). One of the most common use for this property is varistors. Generally, varistor is an electrical resistor with "negative resistance". While the voltage passing through them is "normal", they show high resistance up to several megaohms. But when the voltage grows and reaches some threshold varistor's electrical resistance drops significantly. This property allows varistors to dissipate a lot of energy. They also self reset - when voltage comes to normal again, resistance grows to the standard value. Varistors are most often used for surge-protection.

Polycrystalline ceramic also changes its electrical resistance while various gases are passed over it. So this type of ceramic is also used for making gas sensors.

varistors.png

Different varistors made of ceramic

Piezoelectricity, pyroelectricity, ferroelectricity

Many ceramic materials have the property of piezoelectricity. Piezoelectricity means that materials develop a voltage difference between two faces when compressed or vibrating, linking the electrical and mechanical responses. Such materials are used in electronics that rely on quartz resonators, where electricity produces mechanical motion (powering the device) and the mechanical motion in turn is used for producing electrical signal. Another way of using this property is building piezoelectric ceramic speakers. This is the main type of speakers currently used in smartphones, portable electronics etc. More than that, piezoelectric cantilever speaker in Mi MIX was also possible to be produced thanks to this property of ceramics.

cantilever.png

Mi Mix piezoelectric cantilever ceramic speaker

Pyroelectricity means generating electrical potential while heated or cooled. All pyroelectric ceramics are also piezoelectric materials and can be used to interconvent between thermal, mechanical and electrical forms of energy. This property of ceramics is useful for producing motion sensors - tiny rise of the temperature when someone enters the room produces electrical signal, which is then transmitted to the controlling unit.

pyroelectricity.jpeg

Movement sensor. Works thanks to pyroelectrical properties of the material it is made of

Pyroelectricity can be observed most strongly in materials displaying ferroelectric effect. Ferroelectric materials have a spontaneous polarization, which goes reverse while an electric field is applied. Barium titanate and lead zirconate titanate (these are the two representatives of advanced ceramics) have both piezoelectric and ferroelectric properties. They are used in the manufacture of capacitors, high-frequency loudspeakers, transducers for sonar, and actuators for atomic force and scanning tunneling microscopes.

Electrical properties variation

Some crystalline ceramic materials conduct electricity while being below so called "transition temperature" and break circuit when reaching it. These materials are used for self-controlled heating elements. The most common place where you can find them is rear-windows of your cars - they are the part of the defrost system in those.

rearwindow_defrost.png

Rear-window defrost system

And what can we see about ceramics?

The properties i described above are all rather well known. But not visible to a general consumer like me and you. They are all hidden somewhere under the enclosure. We have to believe ceramics is there. But the best way to understand something is to see it by our eyes. So we are coming to a moment that can be seen, touched, scratched and investigated in tons of other ways. The housing, the body of our phones (not only phones) is now also sometimes made of ceramic. Let's speak about it.

The first tech product to use ceramic housing was the watch. IWC (International Watch Company) is often named as one of the first brands initiated the use of ceramics in watch making.

certina_ceramic_watch.jpg iwc_ceramic.jpg

Certina and IWC produced watches with ceramic bodies/bezels

Ceramics is a very lightweight material. It is scratch-resistant and smooth. These features are what makes ceramics a good housing material. Wide variety of ceramic materials was tested for this, but as of now there is one most commonly used type of advanced ceramic. It's the Zirconium oxide (zirconium dioxide actually, ZrO2), also known as zirconia.

Zirconia ceramics are structured in a martensite-type transformation mechanism of stress induction. This provides the ability to absorb highest amounts of stress relative to other ceramic materials. This type of ceramics shows the highest mechanical strength and toughness at room temperature - the temperature most devices are used at.  Zirconia is also corrosion, chemicals and wear resistant. Its thermal expansion coefficient is close to steel, which makes it even better to replace metallic parts. More than that, it also dissipates heat better than any other non-metallic material. Zirconia is 8.5 on the Mohs scale of mineral hardness, compared to 4.5 for normal steel and 7.5 to 8 for hardened steel and 10 for diamond

forms.jpg

Pure zirconia at room temperature occurs in the monoclinic form and looks like a white powder. It is stable up to 1170 degrees and transforms to the tetragonal structure above this temperature. At 2370 degrees it transforms to the cubic phase.

Atoms of elements in zirconia have two types of bondings - ionic and covalent. This combination makes zirconia a mechanically strong material and gives it property called ductility. Although zirconia is stronger than many metals it is more brittle. To overcome brittle behaviour, ceramic fibers made with a special process are embedded - they form fiber bridges and increase fracture toughness. Zirconia ceramic is also radio-transparent and doesn't interfere with the signals your smartphone sends or receives. This allows us to get rid of plastic parts, which were previously included for antennas to be able to work. More than that, zirconia can also be transparent or colored with any color. Possibly, it will replace screen glasses soon.

circonia.jpg

Different types of circonia-made parts. Pay attention, they are of different colours

Which of Xiaomi devices are made of ceramics?

And here is my favourite part of the lesson - is Xiaomi somewhere at the top of the hi-tech companies or is it somewhere behind them? The answer is known - Xiaomi is leading! :)

Let's see, which of the Xiaomi's devices have ceramic parts? The simplest answer would be - all of them as we already know that each technological product nowadays includes ceramic parts in its circuits. But let's only count the devices with ceramic bodies.

The first product with ceramic body Xiaomi released was its Mi 5 Pro on April 6, 2016. It was the first try to use ceramics not only inside, but also outside the device - it had a black-coloured ceramic body and looked gorgeous.

mi5pro.png

Mi 5 Pro with black ceramic body

Few months later that year, on August 31 they also started selling the first smartwatch in Xiaomi family - Huami Amazfit with a ceramic scratch-resistant bezel.

huami_amazfit.png

Huami Amazfit smart watch

And finally, on October 25 and at CES 2017 Xiaomi presented 2 variants of the concept smartphone with tons of innovations - Mi MIX. Mi MIX body is also made of ceramic. However, opposite to the two products above it exists in two colour variations - black and white (remember, we discussed that zirconia ceramic can be of different colours). But it's not only the body that is made of ceramic. This device is also packed with piezoelectric cantilever speaker, which only could be created thanks to ceramics.

mimix.jpg

Two different colour variations of Mi Mix - with Black and White bodies


Does anybody of you, the readers, have any ideas, what will be the next Xiaomi device using ceramic in it? Maybe anything other than body or bezel? Share your ideas in comments if you have any.



This is the end of our today's lesson. Hope you liked it and know a little more about the devices and things around us. As for me I am looking forward to learn more from the Device Team members next week. Are you?


PREVIOUS LESSONS

Lesson 1 - Marcus
[MIUI Device Classroom] Lesson 1: Overview of Smartphone Specifications
Lesson 2 - Kamal
[MIUI Device Classroom] Lesson 2: All about Phone Screen, PPI, Gorilla Glass
Lesson 3 - Satyajit
[MIUI Device Classroom] Lesson 3: All about Processor and its Basic Info
Lesson 4 - abhoysm
[MIUI Device Classroom] Lesson 4 : Knowing Your Phone Battery and Charging Myths
Lesson 5 - Doraha
[MIUI Device Classroom] Lesson 5 : All about the Screen Protectors
Lesson 6 - Satyajit
[MIUI Device Classroom] Lesson 6: GPS : All you need to know
Lesson 7 - Simran
[MIUI Device Classroom] Lesson 7 : All about Rooting Your Device
Lesson 8 - Doraha
[MIUI Device Classroom] Lesson 8: Different Sensors Available in Phone! [Part 1]
Lesson 9 - Doraha
[MIUI Device Classroom] Lesson 9: Different Sensors Available in Phone! [Part 2]
Lesson 10 - Satyajit
[MIUI Device Classroom] Lesson 10: Basic Info on NFC
Lesson 11 - Satyajit
[MIUI Device Classroom] Lesson 11: Basic Info on Bluetooth
Lesson 12 - BharatG
[MIUI Device Classroom] Lesson 12: All About Mobile Network
Lesson 13 - srav1
[MIUI Device Classroom] Lesson 13: Basics of Wireless Charging
Lesson 14 - Satyajit
[MIUI Device Classroom] Lesson 14: Basic Info on Charging Adapter
Lesson 15 - Soumya_2002
[MIUI Device Classroom] Lesson:15: All About QUALCOMM Quick Charge
Lesson 16 - Ghanshyamshinde
[MIUI Device Classroom] Lesson 16: All about LED flash
Lesson 17 - Satyajit
[MIUI Device Classroom] Lesson 17: The IR Blaster
Lesson 18 - Bhagz
[MIUI Device Classroom] Lesson 18 : All About Kernel
Lesson 19 - Soumya_2002
[MIUI Device Classroom] Lesson 19 : How To Spot A Fake Xiaomi Phone
Lesson 20 - faisal337
[MIUI Device Classroom] Lesson 20 : Mobile Heating
Lesson 21 - Laata
[MIUI Device Classroom] Lesson 21: WiFi Direct
Lesson 22 - Soumya_2002
[MIUI Device Classroom] Lesson 22: All About MicroSD Cards
Lesson 23 - Raaj52
[MIUI Device Classroom] Lesson 23: All About MediaTek PumpExpress
Lesson 24 - Nig_ZA
[MIUI Device Classroom] Lesson 24 : All About Miracast
Lesson 25 - ansarifauwaz
[MIUI Device Classroom] Lesson 25 : All About VPN
Lesson 26 - SpideyMan
[MIUI Device Classroom] Lesson 26 : Basics of Drivers
Lesson 27 - soumya_2002
[MIUI Device Classroom] Lesson 27 : How A Mi Band Works
Lesson 28 - Nig_ZA
[MIUI Device Classroom] Lesson 28 : All About Cellphone Cameras
Lesson 29 - SpideyMan
[MIUI Device Classroom] Lesson 29 : All About Ingress Protection Water and Dust Proofing
Lesson 30 - Nig_ZA
[MIUI Device Classroom] Lesson 30: All About Li-Fi
Lesson 31 - coolmihir
[MIUI Device Classroom] Lesson 31 : All About Fingerprint Sensors!
Lesson 32 - larstas
[MIUI Device Classroom] Lesson 32 : Basic information on speaker & microphone
Lesson 33 - rahul_09
[MIUI Device Classroom] Lesson 33 : All About USB!
Lesson 34 - ydd0ras
[MIUI Device Classroom] Lesson 34 : All About CPU and GPU Governors!
Lesson 35 - larstas
[MIUI Device Classroom] Lesson 35: All About Smartphone Dual Cameras!
Lesson 36 - larstas
[MIUI Device Classroom] Lesson 36: All About Smartphone Dual LED Flashes!
Lesson 37 - ydd0ras
[MIUI Device Classroom] Lesson 37: All about battery optimization!
Lesson 38 - coolmihir
[MIUI Device Classroom] Lesson 38 : All About Iris Scanners!
Lesson 39 - CLAYTON_WWC
[MIUI Device Classroom] Lesson 39 : Depth Insight about CPU and GPU
Lesson 40 - coolmihir
[MIUI Device Classroom] Lesson 40 : All About APN!
Lesson 41 - CLAYTON_WWC
[MIUI Device Classroom] Lesson 41: All About CDLA Technology!
Lesson 42 - CLAYTON_WWC
[MIUI Device Classroom] Lesson 42: All You Need to Know About Wi-Fi!
Lesson 43 - rahul_09
[MIUI Device Classroom] Lesson 43: All About Power Banks and Its Specs



Credits:
Thanks @BharatG for giving me the idea about the topic.
Thanks also go to @marcus_keong and @Candicesu for all the motivation, kindness and suggestions.

Sources:
Forbes, Ortech Ceramics, Wikipedia, Quora, Science Direct, PubChem, New World Encyclopedia and others


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Really awesome thread. Thanks for sharing

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Very informative and helpful! Thanks!

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awesome information

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Great teachers
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Very helpful, thanks for share

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10:07, Feb-28-2017 | From PC
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Detailed explanation thanks for sharing

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Online

Rank: 8Rank: 8

Credits
111045
Device
Mi 6
Online time
3092 Hours
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Mijia Mi Bunny RobotMi Selfie StickMi Bluetooth SpeakerYi Action CameraMi MIXMi ScaleMijia Qi CycleMi WiFiMagic CubeMi KeyMijia Electric ScooterMi VRXiaomi 6 LaunchMijia VR Play 2Mi HeadphonesNinebot MiniMi Plastic In-ear PhonesMi Band 2Mijia Walkie TalkieMi Power Bank 10000MAH Mi Air PurifierMi Yi CameraMi BandMi TV 70Mi BoxMi Bluetooth Canon SpeakerMi Bluetooth HeadsetMi Water PurifierMi  BunnyMi Kids WatchMi Power StripMi Power BankMi VR HeadsetMi HomeMi Notebook AirUnlock MedalMijia Story TellerXiaomi 7th AnniversaryMIUI 2016MarshmallowI Love MIUIFlashholicMIUI Devices ContestAnTuTuAwesome!Fantastic!MIUI 8Redmi 3SMi MIXMi Note 2Mi Pad 2 Win 10 EditionMi 4SMi Max Redmi Note 4Redmi 3Redmi Note 3Mi Pad 2Mi 5Mi 5 ProMi 4cRedmi Note 2Mi Note ProRedmi 2Redmi ProMi NoteXiaomi Mi 4Redmi 1S4 Million Forum MembersMi 5s PlusMi PadRedmi NoteMi 5s1800K Forum MembersMIUI Marathon MedalMIUI 2017MIUI Lucky Friday1700K Forum MembersMi Live MedalMIUI World TourMIUI 300 WeeksMIUI 6th AnniversaryPokemon Master Medal1500K Forum MembersMIUI Forum AppFan Of MIUI PolandDiwali Happy DiwaliMid-Autumn FestivalThanksgiving DayFan Of MIUI BangladeshRooster Year of 2017Xiaomi 6th AnniversaryMerry ChristmasMIUI Fan From SingaporeFan Of MIUI India1900K Forum MembersFan Of MIUI ItalyFan Of MIUI RussiaMIUI Weekly Poll1 Million Forum App InstallsI Love 20162100K Forum MembersMIUI Fan From IndonesiaFan Of MIUI SpainHappy New YearHappy Holi Medal5 Million Forum App InstallsMIUI Happy MedalSuper SaturdayMIUI Font Lover300K Forum MembersRingolicious MedalSuper Sunday3 Million Forum Members10 Million Forum PostsSurge S1Singapore Merlion MedalSuper FridayMIUI Fan From NepalPuzzle MasterFan Of MIUI FranceSuper WednesdayWomen's Day Medal3500K Forum Members90000 Forum MembersMIUI P1st AnniversaryMIUI 5th AnniversaryMIUI 20 Million UsersMIUI SMIUI 50 Million UsersFan Of MIUI GreeceAtaturk MourningCamera Filter Guru MedalMIUI Fan From PhilippinesMIUI Philippines Fan Meetup100k Forum MembersXiaomi 5th AnniversaryMIUI 9500K Forum MembersMIUI 7th AnniversaryMIUI 100 Million UsersSuper TuesdaySuper ThursdayMIUI Drawing Talent3 Million Forum App InstallsMIUI Fan from TurkeyMIUI Fan from MalaysiaRocket to FutureHappy Valentine's DaySuper MondayMIUI Monthly TalkMIUI Fan from IndiaI Love Mi BunnySummer Mi BunnyAlpaca Mi Bunny Gamer Mi BunnyMiPopMIUI ReviewMIUI News TeamMr. DependableMIUI KingTechnology GuruApp StarOTA FeedbackMIUI Halloween 2017Ringtone Expert25 Million StrongMIUI ExpertIndia Independence DayMIUI G+ Follower7 Million Forum MembersStar Wars8 Million Forum MembersMIUI Weekly Devices QuizQuick Survey2017 Annual AwardsMi Bunny Game Master Star Of TechnologyMIUI SuperstarStar MIUI News Team MemberMi Lover MedalDie-hard MIUI FanMaster Of TechnologyMost Active MIUIerAndroid ElfMi TalentMIUI FB FollowerMIUI Twitter FollowerForum Contest LoverRingtone Star Mi Story TellerUpdates LoverScroll Of WisdomMIUI Ice Bucket ChallengeMi A1Youth PledgeApp TalentInbox ZeroAndroid GuruMIUI FollowerMIUI Medals CollectorMIUI Android 4.4 KitKatMost Popular Forum UserApp TalentApp MasterDebate MasterTheme TalentHumor MasterPioneer of MIUI English Forum

10:08, Feb-28-2017 | From PC
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Very informative and helpful! Thanks

Elite Member

eleng_Kuat_slamet

Rank: 6Rank: 6

Credits
12434
Device
Redmi Note 3
Online time
285 Hours
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Mijia Walkie TalkieMijia Qi CycleMi Selfie StickMi  BunnyMi TV 70Mi HeadphonesMi ScaleMijia Electric ScooterMijia Story TellerMi Band 2Mi Bluetooth SpeakerMi VR HeadsetMi WiFiMijia VR Play 2Mi Power Bank 10000MAH Mi Power StripMi MIXMijia Mi Bunny RobotNinebot MiniMi HomeMijia Smart PTZ CameraXiaomi 6 LaunchMi Bluetooth Canon SpeakerUnlock MedalMijia 360° Panoramic CameraYi Action CameraMi Bluetooth HeadsetMi Kids WatchMi BandMagic CubeMi Plastic In-ear PhonesMi VRMi Yi CameraXiaomi 7th AnniversaryI Love MIUIMIUI Devices ContestMarshmallowFantastic!Awesome!MIUI 8AnTuTuMIUI 2016Redmi Note 34 Million Forum MembersMIUI Fan from MalaysiaSuper MondaySingapore Merlion MedalMIUI Fan From NepalPuzzle MasterRocket to FutureMIUI Drawing TalentMIUI Lucky FridayHappy Valentine's DayMIUI Fan from IndiaFan Of MIUI IndiaMerry ChristmasFan Of MIUI ItalyMIUI Weekly Poll1500K Forum MembersMIUI Forum AppMIUI World TourMIUI Fan From SingaporeMIUI Fan From Indonesia1900K Forum MembersXiaomi 6th AnniversaryMIUI 6th AnniversaryI Love 2016Fan Of MIUI BangladeshMIUI 2017Rooster Year of 2017MIUI Monthly TalkMIUI Fan from TurkeyHappy New Year1 Million Forum App InstallsMi Live MedalWomen's Day MedalFan Of MIUI RussiaThanksgiving Day3 Million Forum App InstallsSurge S1Xiaomi 5th Anniversary100k Forum MembersFan Of MIUI SpainMIUI 9Hilal Ramadan 90000 Forum MembersMIUI Fan From MyanmarSuper Tuesday3500K Forum MembersFan Of MIUI UkraineMIUI 100 Million UsersMIUI 7th AnniversaryMIUI P1st AnniversaryMIUI 5th AnniversaryCamera Filter Guru MedalMIUI 20 Million UsersMIUI SMIUI 50 Million UsersFan Of MIUI GreeceAtaturk Mourning300K Forum MembersFan Of MIUI AustraliaHappy Holi MedalMIUI Happy MedalSuper SaturdayRingolicious MedalSuper Friday5 Million Forum App Installs10 Million Forum PostsMIUI Font LoverSuper ThursdayFan Of MIUI FranceSuper WednesdaySuper SundayGamer Mi BunnyAlpaca Mi Bunny Summer Mi BunnyI Love Mi BunnyMiPopMIUI ReviewStar WarsQuick SurveyInbox Zero6 Million Forum MembersMIUI G+ FollowerMIUI Twitter FollowerTechnology GuruMIUI Quick Discussion8 Million Forum MembersMIUI Weekly Devices QuizDebate MasterMi Lover MedalMIUI FollowerForum Contest LoverDie-hard MIUI FanNougat2017 Annual AwardsOreoMIUI Android 4.4 KitKatOTA FeedbackScroll Of WisdomMIUI SuperstarMost Popular Forum UserApp TalentMIUI Medals CollectorMi TalentRingtone Star MIUI Ice Bucket Challenge7 Million Forum MembersYouth PledgeMIUI ExpertMaster Of TechnologyPioneer of MIUI English Forum Theme TalentMIUI Halloween 2017Ringtone ExpertMi Story TellerMr. DependableStar Of TechnologyMIUI KingHumor MasterAndroid ElfMost Active MIUIerUpdates LoverAndroid GuruApp TalentMi Bunny Game Master

10:09, Feb-28-2017 | From PC
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Very informative and helpful! Thanks!
thanks for sharing

Elite Member

Rank: 6Rank: 6

Credits
7798
Device
Mi Max 64GB
Online time
462 Hours
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Mi KeyMijia Mi Bunny RobotMi HeadphonesMagic CubeMi Power Bank 10000MAH Mi Bluetooth SpeakerMi Band 2Mi Kids WatchMi Bluetooth Canon SpeakerMi HomeMi  BunnyMi Selfie StickMijia Smart PTZ CameraMi BandMi ScaleI Love MIUIMarshmallowAwesome!MIUI 2016MIUI 7MIUI Devices ContestMIUI 8Fantastic!Redmi 3SMi 4SMi 4cMi 5Mi Max Mi Pad 2 Win 10 EditionRedmi Note 3Redmi 3Mi Note ProRedmi NoteRedmi ProRedmi Note 4Mi 5 ProRedmi Note 24 Million Forum MembersRocket to Future10 Million Forum PostsFan Of MIUI BangladeshMIUI Fan From NepalMIUI Fan From IndonesiaMIUI 9MIUI 300 WeeksMIUI Forum App1700K Forum MembersMi Live MedalMid-Autumn FestivalMIUI Happy MedalMIUI Fan from MalaysiaFan Of MIUI IndiaXiaomi 6th AnniversaryCamera Filter Guru MedalMIUI 100 Million UsersFan Of MIUI SpainSurge S1Xiaomi 5th AnniversaryHilal Ramadan UEFA EURO MedalMIUI 6th AnniversaryOlympics MedalMIUI Lucky FridayHappy DiwaliMIUI Fan from India300K Forum MembersMIUI 7th AnniversarySuper TuesdayThanksgiving DayFan Of MIUI RussiaMerry Christmas5 Million Forum App InstallsI Love 2016Happy New YearRooster Year of 2017MIUI Font LoverSingapore Merlion MedalPuzzle Master3 Million Forum MembersHappy Valentine's Day1500K Forum MembersPokemon Master MedalSuper MondayMIUI 2017Women's Day MedalSuper SundaySuper ThursdayDiwali MIUI World TourSuper WednesdayI Love Mi BunnyGamer Mi BunnySummer Mi BunnyMIUI Beta TeamMIUI ReviewYouth PledgeMIUI Halloween 2017Ringtone Star Forum Contest LoverMi Story TellerMIUI Medals Collector2017 Annual AwardsAndroid ElfDebate MasterMi Bunny Game Master Android GuruUpdates LoverWallpaper ExpertDie-hard MIUI FanTheme TalentStar Of TechnologyMost Active MIUIerMIUI ExpertMIUI FB FollowerMIUI Twitter FollowerMIUI SuperstarMost Popular Forum UserWallpaper StarIndia Independence Day25 Million StrongScroll Of WisdomTechnology GuruMr. DependableMi Lover MedalRingtone ExpertMi TalentMIUI FollowerApp MasterInbox Zero

10:10, Feb-28-2017 | From PC
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Very informative and helpful! Thanks!
☯I Love Miui and Xiaomi☯

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