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Xiaomi Redmi Note 8 Pro vs Xiaomi Redmi Note 9S

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

XiaomiRedmi Note 8 ProXiaomiRedmi Note 9S
Overview
ReleasedSeptember 2019March 2020
Display
Screen size6.53″6.67″
Resolution2340 × 10802400 × 1080
Sharpness395 pixels per inch395 pixels per inch
PanelLCDLCD
Refresh rate–60 Hz
Display typeIPS LCD panel, as identified by Android Authority; Dot Drop display, 91.4% screen-to-body ratio and 1,500:1 typical contrastIPS LCD and 60 Hz refresh identified by Tech Advisor; DotDisplay, 1,500:1 typical contrast and 84% NTSC typical
Brightness detail500 nits typical and 420 nits minimum; peak brightness not published–
Screen protectionCorning Gorilla Glass 5 front and back; anti-oil and anti-fingerprint coatingCorning Gorilla Glass 5 front and back
Display features84% NTSC typical, HDR, standard/sunshine/night modes, colour-temperature adjustment and 256-level reading mode certified by TÜV RheinlandTÜV Rheinland low blue light certification and Reading mode 2.0
Performance
ChipMediaTek Helio G90TQualcomm Snapdragon 720G
Memory6 GB4 GB – 6 GB
Storage64 GB, 128 GB64 GB, 128 GB
CPUTwo Cortex-A76 cores at 2.05 GHz and six Cortex-A55 cores at 2.0 GHz; 12 nm process identified by Android AuthorityOcta-core Snapdragon 720G at up to 2.3 GHz; 8 nm process and Qualcomm fifth-generation AI engine
GPUARM Mali-G76 MC4Adreno 618
Storage typeDual-channel 6 GB LPDDR4X at 2,133 MHz and 64/128 GB UFS 2.1 storage; microSD up to 256 GB in Vfat formatUK configurations of 4/64 GB and 6/128 GB; dedicated microSD expansion up to 512 GB
CoolingLiquidCool system for SoC and charging IC; maker laboratory claim of 4–6°C lower core temperature than a phone without it–
Cameras
Main camera64 MP48 MP
Ultra wide camera8 MP8 MP
Telephoto cameraNoneNone
Optical zoomNoneNone
Front camera20 MP16 MP
Main camera64 MP, f/1.89, 1/1.7-inch CMOS sensor, 0.8 µm pixels or 4-in-1 binning to 1.6 µm, 79° field of view and phase/contrast detection autofocus48 MP, f/1.79, 1/2-inch sensor, 79° field of view, six-element lens and autofocus; 0.8 µm pixels or 4-in-1 binning to 1.6 µm; up to 8,000 × 6,000 photos
Ultra wide camera8 MP, f/2.2, 1.12 µm pixels and 120° field of view8 MP, f/2.2 and 1.12 µm pixels; 119° field of view before distortion correction and 108° after correction
Front camera20 MP, f/2.0 and 0.9 µm pixels; panorama selfie, palm shutter, HDR and portrait mode16 MP, f/2.48 and 1.0 µm pixels; panorama selfie, palm shutter, HDR, face recognition, AI beauty, portrait and scene detection
ZoomUp to 10× digital zoom; no optical telephoto camera–
Video recording4K at 30 fps, Full HD at 30/60 fps and HD at 30 fps; ultra wide Full HD/HD at 30 fps; slow motion Full HD at 120 fps or HD at 120/240/960 fps; macro video and time-lapse4K at 30 fps, Full HD at 30/60 fps and HD at 30 fps; Full HD slow motion at 120 fps or HD at 120/240/960 fps; ultrawide and macro recording, short video and cinematic 4K
Front videoFull HD at 30 fps; HD at 30/60 fps; short video and beauty modes120 fps slow-motion selfies
Camera featuresAdditional 2 MP macro camera with 2 cm close-up capability and 1.75 µm pixels, plus 2 MP depth sensor with 1.75 µm pixels; nightscape, AI scene detection, ultra wide distortion correction, Pro, portrait, tilt-shift and panorama modesAdditional 5 MP macro with f/2.4, 1.12 µm pixels and autofocus at 2–10 cm; 2 MP depth sensor with f/2.4 and 1.75 µm pixels; night, document, cinematic portrait, 48 MP, Pro, panorama, burst, HDR, timer, levelling, watermark and kaleidoscope modes; 27 rear AI scene tags
Battery and charging
Battery4,500 mAh5,020 mAh
Wired chargingUp to 18 WUp to 18 W
Wireless chargingNoneNone
Battery life detail4,500 mAh typical; maker laboratory claim of up to 10 hours gaming5,020 mAh typical non-removable lithium-ion polymer battery; maker laboratory claims of 147 hours music, 33 hours calling, 16 hours navigation or 13 hours gaming
Wired charging18 W wired charging and included 18 W adaptor; maker laboratory claim of full charge in two hoursPhone supports 18 W wired charging; included adaptor is rated at 22.5 W
Design
TypeStandardStandard
Weight199.8 g209 g
Thickness8.79 mm8.8 mm
Height × width161.35 × 76.4 mm165.75 × 76.68 mm
MaterialsFour-sided 3D curved glass back; plastic frame, as described by Android Authority3D curved glass back; plastic frame, as described by Tech Advisor
ColoursPearl White, Forest Green, Mineral Grey, Dark Blue and Coral Orange; overview names the blue option Deep BlueInterstellar Grey, Aurora Blue and Glacier White
Water resistance detailMaker splash-proof coating and rubber connector seals; no published IP ratingSplash-proof nano-coating; no published IP rating
BiometricsRear fingerprint reader and face unlock, as described by Android AuthoritySide fingerprint reader combined with the power button; AI face unlock
SensorsDistance, in-screen ambient light, accelerometer, gyroscope, compass, vibration motor, fingerprint sensor and IR blasterZ-axis linear vibration motor, fingerprint, distance, in-screen ambient light, accelerometer, gyroscope, compass and IR blaster
Speakers1217 ultra-linear speaker with 0.4 mm maximum amplitude and 10 V Smart PA; 3.5 mm headphone socket1216 ultra-linear speaker with 0.5 mm maximum amplitude and 10 V Smart PA; 3.5 mm headphone socket
Software
Operating systemAndroidAndroid
Software at launchMIUI 10 based on Android 9 Pie, as reported by both reviews; MI Turbo and Game Turbo 2.0Android 10 with MIUI 11, as reported by both reviews
In the boxPhone, power adaptor, protective cover, USB-C cable, SIM tool, user guide and warranty cardPhone, power adaptor, protective cover, USB-C cable, SIM tool, user guide and warranty card
Connectivity
Mobile networkDual 4G with operator-dependent VoLTE; LTE FDD B1/B2/B3/B4/B5/B7/B8/B20/B28 and TDD B38/B40; WCDMA B1/B2/B4/B5/B8 and GSM B2/B3/B5/B8Dual SIM VoLTE, subject to local operator support; LTE FDD B1/B2/B3/B4/B5/B7/B8/B20/B28 and TDD B38/B40; WCDMA B1/B2/B4/B5/B8 and GSM B2/B3/B5/B8
SIMHybrid nano-SIM plus nano-SIM/microSD tray on UK model; India's dedicated microSD arrangement described by Android Central is a regional differenceTwo nano-SIM slots plus a separate microSD slot
Wi-FiWi-Fi 802.11 a/b/g/n/ac, 2.4/5 GHz and Wi-Fi Direct; X antenna designWi-Fi 802.11 a/b/g/n/ac, 2.4/5 GHz and Wi-Fi Direct
BluetoothBluetooth 5.0; Android Authority confirms SBC, AAC and LDAC and warns displayed aptX options lack the required librariesBluetooth 5.0
NFCNFC with Google PayNo NFC, as confirmed by both reviews
USBUSB-CUSB-C; USB 2.0 controller identified by Notebookcheck
PositioningGPS, A-GPS, Galileo, GLONASS and BeiDouGPS, A-GPS, GLONASS and BeiDou

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