iFixit - Answers With Device "Redmi Note 9 Pro"

Redmi Note 9 Pro: Foto offuscate... Quale delle quattro fotocamera sostituire?

Sun, 09 Mar 2025 11:32:56 -0700

Sul mio Xiaomi Redmi Note 9 Pro le foto fatte con la fotocamera posteriore vengono offuscate, mentre la fotocamera frontale funziona perfettamente.

Quale delle quattro fotocamere è da sostituire?

⟐ Edited by author marzo 09, 2025 at 11:32 GMT-7

Redmi Note 9 Pro: Ho sostituito la batteria ma non carica lampeggia il led

Sat, 23 Mar 2024 12:39:47 -0700

Dopo aver sostituito la batteria con una nuova il telefono non carica è il LED lampeggia all'infinito senza caricare

⟐ Answered marzo 23, 2024 at 12:39 GMT-7

Redmi Note 9 Pro: Problema microfono forte fruscio

Sun, 21 May 2023 13:30:59 -0700

Ciao a tutti,

il microfono in conversazione e in modalità registrazione non funziona, praticamente c'è solo un forte rumore di sottofondo. In vivavoce invece va bene.

Ho provato a sostituire il microfono inferiore principale, ma senza successo. Addirittura lasciando la schedina staccata, quella che comprende microfono inferiore/ricarica il fruscio si sente lo stesso !

A sto punto credo sia il microfono superiore/secondario, ma a quanto mi è parso di capire non è sostituibile, sbaglio ?

Ho provato anche a riavviare il telefono in modalità provvisoria ma senza successo.

Attendo vostre considerazioni, mi dispiacerebbe buttare il telefono che tutto sommato va ancora bene, grazie mille !

⟐ Commented maggio 21, 2023 at 13:30 GMT-7

Redmi Note 9 Pro: Bateria szybko schodzi w dół+ telefon czasem się zacina

Fri, 24 Jul 2026 18:24:29 -0700

Potrzebuje pomocy. Na moim telefonie często baterie szybko schodzi w dół, nawet jak mało czasu spędzam na telefonie. + Telefon zacina się w ten sposób, że: sam system włacza apki i pisze na klawiaturze często: pppppppppppp. Bardzo bym prosił o pomoc będę bardzo wdzięczny. ;)

Translation Polish - English

The battery is draining quickly + the phone freezes sometimes

I need help. My phone often drains its battery quickly, even when I'm not using it much. The phone freezes up by launching apps on its own and typing pppppppppppp on the keyboard frequently. I'd really appreciate any help. ;)

⟐ Edited luglio 24, 2026 at 18:24 GMT-7

Redmi Note 9 Pro: My voice is not going to receiver?

Sun, 19 Jul 2026 21:28:40 -0700

When I call someone my voice is not going to the the person whom Im calling .

⟐ Answered luglio 19, 2026 at 21:28 GMT-7

Redmi Note 9 Pro: Xiaomi replacement battery not working

Wed, 15 Jul 2026 09:49:04 -0700

My phone battery is addicted and I bought a new one and replaced it but I can't get my phone to work.

I bought an original BN52 battery that is compatible with this device.

The only thing that I see is the notification led blinking when I connect the new battery.

I already try to disconnect the battery, plug the charger, connect again and the behaviour is the same.

I already try 2 new batteries without sucess.

Any sugestions?

⟐ Commented luglio 15, 2026 at 9:49 GMT-7

Redmi Note 9 Pro: Ghost touch before and after screen replacment

Sun, 31 May 2026 03:41:21 -0700

So i had this phone and its about 1 year old,althought by the phone being new it screen had ghost touch ,after few months it got damaged and it was left on shelf for like other 5 months. I just got a new screen on it and i still have ghost touch. Before repair it had ghost touch on top right corner now its on the bottom in the middle. i still have 6 month warranty. Now my question is could this be a mobo issue? It was dropped previously multiple times, but ghost touch is now in different area so could problem be a new screen??? Is it worth going to repair shop again? Thanks in advance:)

⟐ Answered maggio 31, 2026 at 3:41 GMT-7

Redmi Note 9 Pro: Jab free fire khelta hun to sound nahin aata hai

Fri, 29 May 2026 07:49:25 -0700

Game sound problem

Redmi Note 9 Pro: My phone is overheating after I replaced its middle frame

Tue, 19 May 2026 07:42:51 -0700

I replaced my Redmi note 9 pro's middle frame, by taking all components from previous frame, and fitting it in the new frame.
phone works. all good.

but I charged my phone, in switched off state, and 5-10 mins later the phone is hot.
the CPU side specifically. not the entire motherboard.

The battery drain seems to be normal
phone works fine
battery is not hot, nor is it swelled up.

what could be the reason?

Could it be something is shorting? I did not remove anything from CPU, i just put it as it is
There is also no thermal paste in it, but could that cause heat just from charging the phone?
(the original phone barely had thermal paste in it, like few patches of thermal paste. not a fully applied one.)

Redmi Note 9 Pro: Gir gya tha to back screen broke ho gye or switch off ho gya hai

Fri, 03 Apr 2026 11:49:14 -0700

Gir gya tha to back screen broke ho gye or switch off ho gya hai

⟐ Edited by author aprile 03, 2026 at 11:49 GMT-7

Redmi Note 9 Pro: Why is my back camera not working

Wed, 18 Feb 2026 22:42:13 -0700

My back camera is not working at all...it won't come up

⟐ Commented febbraio 18, 2026 at 22:42 GMT-7

Redmi Note 9 Pro: le telephone ne charge pas The phone is no longer charging.

Mon, 02 Feb 2026 21:48:36 -0700

le telephone ne charge plus

Translation French - English

The phone is no longer charging.

⟐ Answer edited febbraio 02, 2026 at 21:48 GMT-7

Redmi Note 9 Pro: Not working at all

Tue, 27 Jan 2026 07:47:16 -0700

While using my phone the screen suddenly turns dark blue after a minute the phone power off automatically and never open again

⟐ Commented gennaio 27, 2026 at 7:47 GMT-7

Redmi Note 9 Pro: Why is it not showing data transfer on my laptop only charging?

Mon, 24 Nov 2025 08:42:04 -0700

It is not showing on my laptop for data transfer only charging

⟐ Answered novembre 24, 2025 at 8:42 GMT-7

Redmi Note 9 Pro: Start and shut down

Sun, 16 Nov 2025 07:44:04 -0700

The phone showing logo of redmi but don't start when I press the start button

Redmi Note 9 Pro: Audio Chip/Codec not working.

Wed, 15 Oct 2025 11:02:47 -0700

My phone’s audio completely stopped working. None of the outputs or inputs work – headphone jack, USB‑C audio, the build-in speaker, Bluetooth sound, and the built-in microphone are all dead. I’ve reflashed the system and firmware, but the issue persists.

Looking at the logs, the system cannot detect any audio device, and /proc/asound/cards shows nothing. It seems the audio codec (audio IC) is not being recognized by the system.

Could you help me diagnose or repair this issue?

Ps: I bet the audio codec/chip/card (as you call it) is broken.

⟐ Answer accepted ottobre 15, 2025 at 11:02 GMT-7

Redmi Note 9 Pro: Why is my back camera is not working?

Sat, 20 Sep 2025 19:21:13 -0700

When launch the back camera then screen just show black and capture button not working, but if i switch to front camera it's work normally

⟐ Commented settembre 20, 2025 at 19:21 GMT-7

Redmi Note 9 Pro: Why mic is not working while in loud speaker

Thu, 11 Sep 2025 01:41:35 -0700

Mic and earpiece is not working when we use loud speaker

⟐ Answered settembre 11, 2025 at 1:41 GMT-7

Redmi Note 9 Pro: Near selfie camera the screen is slightly making green line

Sat, 23 Aug 2025 11:16:31 -0700

The screen having short green lines near the selfie camera whole screen working perfectly

⟐ Commented agosto 23, 2025 at 11:16 GMT-7

Redmi Note 9 Pro: No my charger adapter not heat while charging

Fri, 18 Jul 2025 05:53:58 -0700

My phone's back camera is not working only when I open my camera black screen overs on video portion and I can't select anyy option because it freezes mut when I select and open front camera from hold and open it opens front camera and it works well

⟐ Answered luglio 18, 2025 at 5:53 GMT-7