Xiaomi Redmi K40 Pro vs Samsung Galaxy S21+ 5G

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PHONES
Phone Names Xiaomi Redmi K40 Pro Samsung Galaxy S21+ 5G
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, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 421, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G996U1
5G bands1, 3, 28, 41, 77, 78 SA/NSA/Sub62, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G996U1
SpeedHSPA, LTE, 5GHSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)
TechnologyGSM / CDMA / HSPA / CDMA2000 / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
 CDMA2000 1x 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G996B
Launch
Announced2021, February 252021, January 14
StatusAvailable. Released 2021, March 04Available. Released 2021, January 29
Body
Build-Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
Dimensions163.7 x 76.4 x 7.8 mm (6.44 x 3.01 x 0.31 in)161.5 x 75.6 x 7.8 mm (6.36 x 2.98 x 0.31 in)
SIMNano-SIM + Nano-SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
Weight196 g (6.91 oz)200 g (Sub6), 202 g (mmWave) (7.05 oz)
 IP53, dust and splash resistantIP68 dust/water resistant (up to 1.5m for 30 min)
Display
ProtectionCorning Gorilla Glass 5Corning Gorilla Glass Victus
Resolution1080 x 2400 pixels, 20:9 ratio (~395 ppi density)1080 x 2400 pixels, 20:9 ratio (~394 ppi density)
Size6.67 inches, 107.4 cm2 (~85.9% screen-to-body ratio)6.7 inches, 107.8 cm2 (~88.3% screen-to-body ratio)
TypeSuper AMOLED, 120Hz, HDR10+, 1300 nits (peak)Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)
 -Always-on display
Platform
CPUOcta-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55)Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - InternationalOcta-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China
ChipsetQualcomm SM8350 Snapdragon 888 5G (5 nm)Exynos 2100 (5 nm) - InternationalQualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
GPUAdreno 660Mali-G78 MP14 - InternationalAdreno 660 - USA/China
OSAndroid 11, MIUI 12Android 11, up to 4 major Android upgrades, One UI 6.1
Memory
Card slotNoNo
Internal128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM128GB 8GB RAM, 256GB 8GB RAM
 UFS 3.1UFS 3.1
Main Camera
FeaturesColor spectrum sensor, LED flash, HDR, panoramaLED flash, auto-HDR, panorama
Single20 MP, f/2.5, (wide), 1/3.4", 0.8µm-
Triple64 MP, f/1.9, 26mm (wide), 1/1.7", 0.8µm, PDAF 8 MP, f/2.2, 119˚ (ultrawide) 5 MP, f/2.4, 50mm (macro)12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video
Video8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS, HDR10+8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
Selfie camera
FeaturesHDRHDR
Single20 MP, f/2.5, (wide), 1/3.4", 0.8µm10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF
Video1080p@30fps, 720p@120fps4K@30/60fps, 1080p@30fps
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 24-bit/192kHz audio32-bit/384kHz audio Tuned by AKG
Comms
Bluetooth5.2, A2DP, LE, aptX HD, aptX Adaptive5.0, A2DP, LE
Infrared portYes-
NFCYesYes
PositioningGPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)GPS, GLONASS, BDS, GALILEO
RadioNoFM radio (Snapdragon model only; market/operator dependent)
USBUSB Type-C 2.0, OTGUSB Type-C 3.2, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometerFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
 -Samsung DeX, Samsung Wireless DeX (desktop experience support) Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified) Ultra Wideband (UWB) support
Battery
Charging33W wired, PD3.0, QC3, 100% in 52 min25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
TypeLi-Po 4520 mAhLi-Ion 4800 mAh
Misc
ColorsBlack, White, AuroraPhantom Black, Phantom Silver, Phantom Violet, Phantom Pink, Phantom Gold, Phantom Red
ModelsM2012K11CSM-G996B, SM-G996B/DS, SM-G996U, SM-G996U1, SM-G996W, SM-G996N, SM-G9960
PriceAbout 360 EUR$ 162.99 / £ 185.00 / € 199.00
SAR-0.65 W/kg (head)     0.95 W/kg (body)
SAR EU-0.54 W/kg (head)     1.33 W/kg (body)
Tests
Battery life- Endurance rating 114h
Camera- Photo / Video
Display- Contrast ratio: Infinite (nominal)
Loudspeaker- -25.8 LUFS (Very good)
Performance- AnTuTu: 622276 (v8) GeekBench: 3476 (v5.1) GFXBench: 54fps (ES 3.1 onscreen)
OUR TESTS
Battery (old)-Endurance rating 114h
Camera-Photo / Video
Display-883 nits max brightness (measured)
Loudspeaker--25.8 LUFS (Very good)
Performance-AnTuTu: 622276 (v8) GeekBench: 3476 (v5.1) GFXBench: 54fps (ES 3.1 onscreen)