Xiaomi Redmi Note 9 Pro vs Samsung Galaxy M51

Phones Images
PHONES
Phone Names Xiaomi Redmi Note 9 Pro Samsung Galaxy M51
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 411, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41, 66
SpeedHSPA, LTEHSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 400/50 Mbps
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
Launch
Announced2020, April 302020, August 31. Released 2020, September 11
StatusAvailable. Released 2020, May 05Discontinued
Body
BuildGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frameGlass front (Gorilla Glass 3+), plastic back, plastic frame
Dimensions165.8 x 76.7 x 8.8 mm (6.53 x 3.02 x 0.35 in)163.9 x 76.3 x 9.5 mm (6.45 x 3.00 x 0.37 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight209 g (7.37 oz)213 g (7.51 oz)
Display
ProtectionCorning Gorilla Glass 5Corning Gorilla Glass 3+
Resolution1080 x 2400 pixels, 20:9 ratio (~395 ppi density)1080 x 2400 pixels, 20:9 ratio (~393 ppi density)
Size6.67 inches, 107.4 cm2 (~84.5% screen-to-body ratio)6.7 inches, 108.4 cm2 (~86.7% screen-to-body ratio)
TypeIPS LCDSuper AMOLED Plus
Platform
CPUOcta-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver)Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
ChipsetQualcomm SM7125 Snapdragon 720G (8 nm)Qualcomm SDM730 Snapdragon 730G (8 nm)
GPUAdreno 618Adreno 618
OSAndroid 10, MIUI 11Android 10, upgradable to Android 12, One UI 4.1
Memory
Card slotmicroSDXC (dedicated slot)microSDXC (dedicated slot)
Internal64GB 6GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM128GB 6GB RAM, 128GB 8GB RAM
 UFS 2.1-
Main Camera
FeaturesLED flash, HDR, panoramaLED flash, panorama, HDR
Quad64 MP, f/1.9, 26mm (wide), 1/1.72", 0.8µm, PDAF 8 MP, f/2.2, 119˚ (ultrawide), 1/4.0", 1.12µm 5 MP (macro), AF Auxiliary lens64 MP, f/1.8, 26mm (wide), 1/1.73", 0.8µm, PDAF 12 MP, f/2.2, 123˚ (ultrawide) 5 MP (macro) Auxiliary lens
Video4K@30fps, 1080p@30/60/120fps, 720p@960fps, gyro-EIS4K@30fps, 1080p@30fps
Selfie camera
FeaturesHDR, panoramaHDR
Single16 MP, f/2.5, (wide), 1/3.06", 1.0µm32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video1080p@30/120fps4K@30fps, 1080p@30fps
Sound
3.5mm jack YesYes
35mm jackYesYes
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, LE5.0, A2DP, LE
Infrared portYes-
NFCYesYes
PositioningGPS, GLONASS, GALILEO, BDSGPS, GLONASS, GALILEO, BDS
RadioFM radio, recordingFM radio, RDS
USBUSB Type-C 2.0, OTGUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compassFingerprint (side-mounted), accelerometer, gyro, proximity, compass
Battery
Charging30W wired25W wired, 100% in 115 min Reverse wired
TypeLi-Po 5020 mAhLi-Po 7000 mAh
Misc
ColorsTropical Green, Glacier White, Interstellar GrayCelestial Black, Electric Blue, White
ModelsM2003J6B2GSM-M515F, SM-M515F/DSN
Price€ 136.00 / £ 164.28About 470 EUR
SAR0.87 W/kg (head)     0.71 W/kg (body)1.38 W/kg (head)
SAR EU0.66 W/kg (head)     1.02 W/kg (body)0.61 W/kg (head)     1.45 W/kg (body)
Tests
Battery lifeEndurance rating 123hEndurance rating 156h
Camera Photo / Video Photo / Video
Display Contrast ratio: 1285:1 (nominal) Contrast ratio: Infinite (nominal)
Loudspeaker -28.6 LUFS (Average) -28.5 LUFS (Average)
Performance AnTuTu: 279625 (v8) GeekBench: 1785 (v5.1) GFXBench: 15fps (ES 3.1 onscreen) AnTuTu: 266620 (v8) GeekBench: 1774 (v5.1) GFXBench: 15fps (ES 3.1 onscreen)
OUR TESTS
Battery (old)Endurance rating 123hEndurance rating 156h
CameraPhoto / VideoPhoto / Video
DisplayContrast ratio: 1285:1 (nominal)677 nits max brightness (measured)
Loudspeaker-28.6 LUFS (Average)-28.5 LUFS (Average)
PerformanceAnTuTu: 279625 (v8) GeekBench: 1785 (v5.1) GFXBench: 15fps (ES 3.1 onscreen)AnTuTu: 266620 (v8) GeekBench: 1774 (v5.1) GFXBench: 15fps (ES 3.1 onscreen)