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Samsung Galaxy S21+ vs Xiaomi POCO X3 Pro

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

Better figure, where one is clearly better

SamsungGalaxy S21+XiaomiPOCO X3 Pro
Overview
ReleasedJanuary 2021March 2021
Display
Screen size6.7″6.67″
Resolution2400 × 10802400 × 1080
Sharpness393 pixels per inch395 pixels per inch
PanelOLEDLCD
Refresh rate120 Hz120 Hz
Display typeFlat FHD+ Dynamic AMOLED 2X Infinity-O Display (2,400 × 1,080), HDR10+ certified; adaptive 120 Hz (48–120 Hz); 6.7 inches as a full rectangle, 6.5 inches with rounded cornersLCD DotDisplay, as identified by Android Authority; 20:9 aspect ratio
Pixel density394 ppiMaker lists 395 ppi
Brightness detail1,300 nits peak450 nits typical; peak brightness not published
Screen protectionCorning Gorilla Glass Victus front and backCorning Gorilla Glass 6
Display featuresEye Comfort ShieldDynamicSwitch at 30/50/60/90/120 Hz, 240 Hz touch sampling, sunlight display, reading mode 3.0 and Widevine L1
Performance
ChipExynos 2100Qualcomm Snapdragon 860
Memory8 GB6 GB – 8 GB
Storage128 GB, 256 GB128 GB, 256 GB
CPU5 nm, 64-bit octa-core, 2.9 GHz + 2.8 GHz + 2.2 GHz; 8 GB of LPDDR5 RAM7 nm Kryo 485 octa-core processor at up to 2.96 GHz
GPU–Adreno 640
Storage type128 or 256 GB; no microSD slotLPDDR4X RAM and UFS 3.1 storage; UK 6 GB/128 GB and 8 GB/256 GB; microSD expansion up to 1 TB, tested by maker with a SanDisk card
Cooling–LiquidCool Technology 1.0 Plus with multi-layer graphite and D5 copper heat pipe; maker claim of up to 6°C processor cooling
Cameras
Main camera12 MP48 MP
Ultra wide camera12 MP8 MP
Telephoto camera64 MPNone
Optical zoom1.1×None
Front camera10 MP20 MP
Main camera12 MP wide-angle, Dual Pixel AF, OIS, F1.8, 1.8 µm, 79°48 MP, f/1.79, 1/2-inch sensor, 4-in-1 binning to 1.6 µm and autofocus
Ultra wide camera12 MP fixed focus, F2.2, 1.4 µm, 120°8 MP, f/2.2 and 119° field of view
Telephoto camera64 MP, phase detection AF, OIS, F2.0, 0.8 µm, 76°; 1.1x optical zoom (MobileSyrup)–
Front camera10 MP Dual Pixel AF, F2.2, 1.22 µm, 80°20 MP, f/2.2 and 4-in-1 binning to 1.6 µm
Zoom3x Hybrid Optic Zoom; 30x Space Zoom–
Video recording8K at 24 fps; 4K at 60 fps4K at 30 fps, Full HD at 30/60 fps and HD at 30 fps
Front video–Full HD at 30 fps, as reported by TechAdvisor
Camera features–Additional 2 MP f/2.4 macro camera with 4 cm fixed focus and 2 MP f/2.4 depth camera; rear, ultra wide and selfie night modes; simultaneous front/rear dual video
Battery and charging
Battery4,800 mAh5,160 mAh
Video playback (maker's claim)Up to 22 hoursUp to 18 hours
Wired chargingUp to 25 WUp to 33 W
Wireless chargingUp to 15 WNone
Battery life detail4,800 mAh typical, 4,660 mAh rated; wireless video playback up to 22 hours; internet use up to 15 hours (LTE) or 17 hours (Wi-Fi); talk time up to 40 hours (4G)5,160 mAh typical; maker laboratory claims 11 hours gaming, 18 hours video and 110 hours music
Wired chargingUSB PD 3.0 (PPS) fast charging, AFC and QC2.0 compatible; up to 25 W33 W fast charging with included 33 W adaptor and Middle Middle Tab technology; maker laboratory claims 59% in 30 minutes and full charge in 59 minutes
Wireless chargingFast Wireless Charging 2.0 (WPC); up to 15 W–
Charges other devicesWireless PowerShare–
Design
TypeStandardStandard
Weight200 g215 g
Thickness7.8 mm9.4 mm
Height × width161.5 × 75.6 mm165.3 × 76.8 mm
Water and dust resistanceIP68IP53
MaterialsMetal frame with Contour Cut camera housing; Deluxe Frosted Haze matte finishDual-texture back with reflective central strip and metallic-texture sides; plastic back, as described by TechAdvisor
ColoursPhantom Violet, Phantom Silver, Phantom BlackPhantom Black, Metal Bronze and Frost Blue
Water resistance detailIP68, up to 1.5 m of fresh water for up to 30 minutes; not advised for beach or pool useIP53 splash protection; not immersion protection, and liquid/dust damage is excluded from warranty
BiometricsUltrasonic in-screen fingerprint sensor, face recognitionSide fingerprint reader and AI Face Unlock
SensorsUltrasonic fingerprint, accelerometer, barometer, gyro, geomagnetic, Hall, proximity, ambient lightProximity, ambient light, accelerometer, compass and IR blaster; Z-axis linear vibration motor
SpeakersStereo speakers; UHQ 32-bit and DSD64/128 playbackStereo speakers, 3.5 mm headphone socket and Hi-Res Audio
Software
Operating systemAndroidAndroid
Software at launchAndroid 11MIUI 12 for POCO based on Android 11, as reported by both reviews
In the box–Phone, power adaptor, USB-C cable, SIM tool, protective case, user guide and warranty card
Connectivity
Mobile network5G (NSA, SA), Sub64G LTE FDD B1/B2/B3/B4/B5/B7/B8/B20/B28 and TDD B38/B40/B41; WCDMA B1/B2/B4/B5/B8 and GSM 850/900/1800/1900 MHz
SIMNano-SIM and eSIMHybrid dual nano-SIM or one SIM plus microSD, as clarified by Android Authority
Wi-FiWi-Fi 6 (802.11a/b/g/n/ac/ax), 2.4 and 5 GHz, HE80, MIMO, 1024-QAMWi-Fi 5, 2.4/5 GHz and 2×2 MIMO
BluetoothBluetooth 5.0Bluetooth 5.0
Ultra WidebandYes–
NFCYesMultifunction NFC with Google Pay; availability varies by market
USBUSB Type-C, USB 3.2 Gen 1; DisplayPort output up to 4K at 60 fpsUSB-C
PositioningGPS, Galileo, Glonass, BeiDouGPS, A-GPS, GLONASS, BeiDou and Galileo

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