Redmi Note 9: Users complain about problems after installing MIUI 12

Redmi Note 9

Redmi Note 9 is definitely a good smartphone. It justifies its price in terms of performance, features, functionalities and quality of photos. Using it, few people regret not having acquired something else. Still, there are complaints about this model. There were questions about the build quality. In particular, they complained about the lack of tightness of the glass, which covers the main camera unit.

Redmi Note 9: Users complain about problems after installing MIUI 12

And recently another attack fell on Redmi Note 9. And it is software related. More and more users complain about low system performance, failures in Wi-Fi and note that a number of games literally “break” the firmware and severe freezes and delays are observed.

The problem lies in MIUI 12, because all of the above crashes began to appear after installing the update. The company has already released MIUI 12 for Redmi Note 9 for Chinese, Indian and European versions of the device. In August, the developers stopped the spread of the global variant of the update due to errors, but after a while, the update began to come to smartphones again.

Redmi Note 9

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At the moment, the company does not comment on the situation in any way. But the moderator of the Mi community said that the developers are aware of the existing problems and are working to fix them. This is not the first time that Xiaomi has rolled out a firmware version, which is full of holes and bugs.

Redmi Note 9 specifications

  • 6.53-inch (2340  × 1080 pixels) Full HD+ display with 450nit(typ) brightness, Corning Gorilla Glass 5 protection
  • Octa Core MediaTek Helio G85 12nm processor (Dual 2GHz Cortex-A75 + Hexa 2GHz 6x Cortex-A55 CPUs) with up to 1000MHz ARM Mali-G52 2EEMC2 GPU
  • 4GB LPPDDR4x RAM with 64GB (eMMC 5.1), 4GB / 6GB LPPDDR4x RAM with 128GB (eMMC 5.1) storage, expandable memory up to 512GB with microSD
  • Dual SIM (nano + nano + microSD)
  • Android 10 with MIUI 11
  • 48MP rear cameras with Samsung GM1 sensor, f/1.79 aperture, PDAF, EIS, 0.8μm pixel size, LED flash, EIS, 8MP 118° ultra-wide angle lens with f/2.2 aperture, 2MP macro lens and 2MP depth sensor with f/2.4 aperture
  • 13MP front camera with f/2.25 aperture
  • Fingerprint sensor, IR sensor
  • 3.5mm audio jack, 1216 Linear speaker, FM Radio
  • Splash resistant (P2i coating)
  • Dimensions:  162.38×77.2×8.95mm; Weight: 199g
  • Dual 4G VoLTE, Wi-Fi 802.11 a/b/g/n, Bluetooth 5, GPS + GLONASS, USB Type-C
  • 5020mAh (typical) / 4920mAh (minimum) battery, 22.5W in-box charger, 9w reverse charging
Source/VIA :
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  1. influenist
    September 4, 2020

    Had exactly the same issues. As I have all my data with nextcloud I made a google-, home screen- , whatsapp- and wechat backup and performed a factory reset. Resolved my issues. No more freezes etc.

    Note I come back from Mix2 & mix 3 (broke both screens during covid so needed something quick) so I expected a performance reduction. But the freezes under miui where non workable. Must say, I was disappointed and almost about to return the phone, but couldn't waste the natural resources and gave the factory reset a try. Worked luckily!

  2. Vinayaka Shastri
    September 4, 2020

    I have note 9 pro max and still haven't received miui 12

  3. JGil Benjamin
    September 4, 2020

    When will the Redmi note 9s can receive an update?

  4. Manisha Shah
    September 5, 2020

    I m too having problems using mi note 9,The phn is heavy,there is no notification light bar to view what is missed,I dnt know why without opening Bluetooth it always become on,the earphn plug which in downward is not good idea.

  5. Blankerzz Gaming
    September 6, 2020

    Not gonna lie this also apply to redmi note 8 pro… Lately after i installed the miui 12 my apps keeps crashing…

  6. MILANKE 05
    September 6, 2020

    I have note 9 and miui 12 works good

  7. Cyril Dieudonne
    September 9, 2020

    I have many issues with MIUI12 on my Redmi 6 pro. Sluggish, freezes, and crashes…

  8. John Jezreel Delos Santos
    September 12, 2020

    same as me, the logs are there. specially when i used some apps

  9. John Jezreel Delos Santos
    September 12, 2020

    Same as me.

  10. Saini Dinesh
    October 12, 2020

    𝓶𝔂 𝓹𝓱𝓸𝓷𝓮 𝓪𝓾𝓽𝓸𝓶𝓪𝓽𝓲𝓬𝓪𝓵𝓵𝔂 𝓱𝓪𝓷𝓰 & 𝓷𝓸𝓽 𝓼𝓱𝓸𝔀 𝓯𝓾𝓵𝓵 𝓱𝓭 𝓿𝓲𝓭𝓮𝓸 𝓲𝓷 𝔂𝓸𝓾𝓽𝓾𝓫𝓮 𝓪𝓷𝓭 𝓼𝓸𝓶𝓮 𝓽𝓲𝓶𝓮 𝓹𝓱𝓸𝓷𝓮 𝓪𝓾𝓽𝓸𝓶𝓪𝓽𝓲𝓬𝓪𝓵𝓵𝔂 𝓸𝓯𝓯

  11. ramya .K
    November 29, 2020

    Waste of buying redmi note 9 because it always has software issues i highly recommend u people not to buy redmi note 9

  12. ramya .K
    November 29, 2020

    Yes same was happened to me what to do

  13. Lebohang
    November 30, 2020

    My note 9 pro won't show macro mode after mui 12 update

  14. jane caumban
    November 30, 2020

    The problem of my redmi note 9 is the vibrating alarm cannot stop .And the phone hang up.What should I do reset the phone.?

  15. Christine Thindi
    December 22, 2020

    At first my 9 Pro worked fine. After updating to MIUI 12 it kept rebooting and being sluggish, no further installing of apps possible. Factory resets (also in Recovery Mode) didn't resolve the issue. Have to return the phone.

    December 26, 2020

    Hang and heating problem in my phone ,mi gallery staff always doing same thing changing software and then they return ,2 month before I buy this phone ,plz stop buying this phone,very worst phone. Redme note9

  17. promise
    September 6, 2021

    i have note 9 and i expirienced these issues now i returned the phone n the store havent said anything they mensioned the software updats but the phone freeze when i open the camera also im so hurt