Redmi Note 9 Pro FAQ

Overview 
1.Q:What are the features of Redmi Note 9 Pro?
A:Redmi Note 9 Pro has a 3D four-curved body + water wave texture, a 5020mAh large rechargeable battery with a maximum support of 18W quick charging + type-c interface, quick charging at critical moments;64 million AI camera, wireless FM radio, can listen to news, music, storytelling without headphones; The hardware is equipped with qualcomm snapdragon 720G eight-core processor, 8nm manufacturing process, 6.67-inch eye-protection screen, and 20:9 ratio to bring a cinematic visual experience.
 
Appearance
1.Q:What are the features of Redmi Note 9 Pro body, and what material does it use?
A:Redmi Note 9 Pro uses a 6.67 -inch LCD full screen; Screen glass material is the fifth Corning protection glass, the back of the body uses the integration of 3D four surface design, at the same
time also much lighter than the metal shell of mobile phone back; Support the Blue, tarnish, white, green colors.
 
2.Q:Does Redmi Note 9 Pro have touch button?
A:Redmi Note 9 Pro has no touch button and uses a virtual button scheme.
Setting path: Setting >> Full screen >> classic navigation key
 
3.Q:Does Redmi Note 9 Pro have a LED indicator?
A:Redmi Note 9 Pro has a LED Indicator.
 
4.Q:What specification does Redmi Note 9 Pro use? What headphone equipment can use?
A:Redmi Note 9 Pro supports 3.5mm headphones.
 
5.Q: What are the features of Redmi Note 9 Pro's face unlock?
A: The face unlock of Redmi Note 9 Pro can achieve fast and safe face unlock through high-precision intelligent matching through face detection, attitude estimation, quality assessment, feature extraction, face comparison, in vivo detection and other technologies.
Risk tip: Face recognition is less secure than graphic, digital and hybrid passwords, and the phone could be unlocked by photos, people with similar looks or objects with similar features.
 
6.Q: Does it need to wake up the Redmi Note 9 Pro screen of face unlock?
A: The Redmi Note 9 Pro's face unlock needs to wake up the screen after use. It can be used with the function of lifting and awakening to realize the smooth experience of lifting and unlocking the phone. It is suggested that select Settings>> Display>>"wake up" function.
 
7.Q: Does Redmi Note 9 Pro support self-replacement of rear cover?
A: The Redmi Note 9 Pro adopts an integrated body design, and the rear cover and battery are not self-disassembly and replacement.
 
8.Q: Does Redmi Note 9 Pro support waterproofing?
A: Redmi Note 9 Pro has P2i splash-proof nano coating technology, which supports life waterproof and splashproof. Damages caused by invading liquid or dust are not covered by the warranty. In addition, life dustproof spillage function will be reduced due to daily wear and tear, not permanent effective. Do not charge mobile phone in wet condition.
 
Hardware related
1.Q: What processor does Redmi Note 9 Pro use and what is its performance?
A: Redmi Note 9 Pro is equipped with qualcomm snapdragon 720G octu-core processor, advanced 8nm process and Kryo 465 architecture, the highest master frequency is 2.3 GHz, with MIUI 11 system-level customized optimization.
 
2.Q: What is the selfie effect of Redmi Note 9 Pro front camera?
A: Redmi Note 9 Pro uses a 16-megapixel camera with AI portrait mode in the front, and 120fps selfies to express their emotions in slow motion.
 
3. Q: How does the Redmi Note 9 Pro rear camera?
A: The Redmi Note 9 Pro rear camera adopts 64 million cameras, which are set to 64MP + 8MP + 5MP + 2MP, with AI scene detection function, which can detect multiple scenes before and after to create better images, and can shoot high-quality 4K video on the device.
 
4. Q: What is AI scene detection?
A: Through the depth algorithm and learning of artificial intelligence, the camera can support a variety of application scenes in real time. According to the different shooting contents, the camera parameters will be automatically adjusted by artificial intelligence and the optimization scheme will be matched, so that the picture will have layers, the subject will be highlighted with details, and the color will look better. Currently Redmi Note 9 Pro can detect multiple before and after scenes to create better images.
 
5.Q: Why doesn't Redmi Note 9 Pro blur in preview when taking photos in portrait mode?
A: For the comprehensive consideration of power and performance, Redmi Note 9 Pro will not render the blur effect in the preview state when taking photos in portrait mode. After the shooting, the photos taken in portrait mode will show the background blur effect.
 
6.Q: What scale screen does Redmi Note 9 Pro use?
A: Redmi Note 9 Pro uses a 20: 9 ratio screen (resolution 1080(H)*2400(V)).At present, most apps on the market can automatically recognize the size and resolution of the phone's screen, so that the full screen can be displayed on the screen of 20:9.A small number of software or play video may not be full screen, not full screen software can be in the full screen Settings can force full screen, no black edge.
Note: if the current frequently used App of the user shows abnormal display and screen proportion is out of balance, it can be suggested to use
The user submits feedback in the desktop >> system tools folder >> user feedback App, and the module selects more >> third party Application >> select the corresponding application name, and detailed description of the problem of the App name, we will contact as soon as possible App developers make adaptation updates.
 
7.Q: What are the features of the Redmi Note 9 Pro screen? Does it support sun screen, night screen, eye protection mode and color temperature adjustment?
A: Redmi Note 9 Pro USES A 6.67-inch LCD eye-protection screen with A resolution of 1080(H)*2400(V) and A screen ratio of 20:9.Support for sunlight screen 2.0, noctilucent screen, eye protection mode 2.0 and non-polar color temperature.
 
8.Q: What kind of SIM card can Redmi Note 9 Pro use? Does it support external SD card?
A: Redmi Note 9 Pro adopts Nano SIM card +Nano SIM card +Micro SD card slot design; Up to 512GB capacity, can store more content.
Note 1: it is not recommended that cut the card by themselves, which may cause damage to the card holder, fail to recognize the card or SIM card can not be taken out, etc.
Note 2: it is recommended that purchase Micro SD cards through regular channels.

 
9. Q: Does Redmi Note 9 Pro support dual sim cards and dual standby?
A: Redmi Note 9 Pro supports dual sim cards and dual standby (single pass). Dual sim cards do not distinguish between primary and secondary cards.
Note: Dual 4G SIM requires support from local carrier services and may not be available in all regions.
 
10.Q: What kind of network does Redmi Note 9 Pro support?
A: Redmi Note 9 Pro supports 4G+/ 4G / 3G / 2G networks.