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Google Pixel 4a vs Xiaomi POCO X3 Pro

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

Better figure, where one is clearly better

GooglePixel 4aXiaomiPOCO X3 Pro
Overview
ReleasedAugust 2020March 2021
Display
Screen size5.81″6.67″
Resolution2340 × 10802400 × 1080
Sharpness444 pixels per inch395 pixels per inch
PanelOLEDLCD
Refresh rate60 Hz120 Hz
Display typeFull-screen OLED with hole-punch camera; 19.5:9 aspect ratioLCD DotDisplay, as identified by Android Authority; 20:9 aspect ratio
Pixel density443 ppiMaker lists 395 ppi
Brightness detail–450 nits typical; peak brightness not published
Always-on displayAlways-on display; Now Playing–
Screen protectionCorning Gorilla Glass 3Corning Gorilla Glass 6
Display featuresHDR support; greater than 100,000:1 contrast ratio; true black; 24-bit colour; 60 Hz refresh identified by NotebookcheckDynamicSwitch at 30/50/60/90/120 Hz, 240 Hz touch sampling, sunlight display, reading mode 3.0 and Widevine L1
Performance
ChipQualcomm Snapdragon 730GQualcomm Snapdragon 860
Memory6 GB6 GB – 8 GB
Storage128 GB128 GB, 256 GB
CPU64-bit octa-core CPU; 2.2 GHz + 1.8 GHz; Titan M security module7 nm Kryo 485 octa-core processor at up to 2.96 GHz
GPUAdreno 618Adreno 640
Storage type6 GB LPDDR4x RAM; UFS 2.0 storage identified by Notebookcheck; 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 camera12.2 MP48 MP
Ultra wide cameraNone8 MP
Telephoto cameraNoneNone
Optical zoomNoneNone
Front camera8 MP20 MP
Main cameraDual-pixel phase-detection autofocus; f/1.7; 1.4 μm pixels; 77° field of view; optical and electronic image stabilisation48 MP, f/1.79, 1/2-inch sensor, 4-in-1 binning to 1.6 µm and autofocus
Ultra wide camera–8 MP, f/2.2 and 119° field of view
Front cameraf/2.0; 1.12 μm pixels; fixed focus; 84° field of view20 MP, f/2.2 and 4-in-1 binning to 1.6 µm
Video recordingRear 4K at 30 fps; 1080p at 30/60/120 fps; 720p at 30/60/240 fps4K at 30 fps, Full HD at 30/60 fps and HD at 30 fps
Front video1080p, 720p or 480p at 30 fpsFull HD at 30 fps, as reported by TechAdvisor
Camera featuresHDR+ with dual exposure controls; Portrait Mode; Top Shot; Night Sight with astrophotography; fused video stabilisationAdditional 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
Battery3,140 mAh5,160 mAh
Video playback (maker's claim)–Up to 18 hours
Wired chargingUp to 18 WUp to 33 W
Wireless chargingNoneNone
Battery life detailOriginal typical capacity 3,140 mAh; Google's Android 13 update from 8 January 2025 reduces available capacity and charging performance on affected Pixel 4a units, not all units; related support programme ended 8 January 20265,160 mAh typical; maker laboratory claims 11 hours gaming, 18 hours video and 110 hours music
Wired chargingOriginal rating up to 18 W using supplied USB-PD 2.0 adaptor; charging performance reduced on units affected by Google's January 2025 battery update33 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
Design
TypeStandardStandard
Weight143 g215 g
Thickness8.2 mm9.4 mm
Height × width144 × 69.4 mm165.3 × 76.8 mm
Water and dust resistance–IP53
MaterialsSoft-touch polycarbonate unibodyDual-texture back with reflective central strip and metallic-texture sides; plastic back, as described by TechAdvisor
ColoursJust Black in the UK; Barely Blue also sold in the US and JapanPhantom Black, Metal Bronze and Frost Blue
Water resistance detail–IP53 splash protection; not immersion protection, and liquid/dust damage is excluded from warranty
ButtonsPower button and volume controls–
BiometricsPixel Imprint rear fingerprint sensorSide fingerprint reader and AI Face Unlock
SensorsProximity and ambient light; accelerometer; gyrometer; magnetometer; barometer; Android Sensor HubProximity, ambient light, accelerometer, compass and IR blaster; Z-axis linear vibration motor
SpeakersStereo speakersStereo speakers, 3.5 mm headphone socket and Hi-Res Audio
MicrophonesTwo microphones with noise suppression–
Software
Operating systemAndroidAndroid
Software at launchAndroid 10MIUI 12 for POCO based on Android 11, as reported by both reviews
Software updatesNo longer receives regular Android version or security updates according to Google's current support policy; original promise was at least three years; separate battery-related Android 13 update issued in January 2025–
AI featuresGoogle Assistant; Recorder with on-device English transcription and Google Docs sharing; Live Caption for audio, video and calls at launch in English–
Safety featuresPersonal Safety app with emergency sharing and car crash detection; language, country and network restrictions apply–
In the boxUK package includes 18 W USB-C power adaptor, USB-C to USB-C cable (1 m, USB 2.0), Quick Switch adaptor, SIM tool and quick start guide; earbuds included only in certain other regionsPhone, power adaptor, USB-C cable, SIM tool, protective case, user guide and warranty card
Connectivity
Mobile networkUK G025N supports LTE Cat 12 download up to 600 Mbps and Cat 5 upload up to 75 Mbps; no 5G; first sold in the US on 20 August 20204G 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
SIMOne nano-SIM and eSIM in selected markets, including the UK; operator dependentHybrid dual nano-SIM or one SIM plus microSD, as clarified by Android Authority
Wi-FiDual-band 2.4/5 GHz 802.11a/b/g/n/ac; 2x2 MIMOWi-Fi 5, 2.4/5 GHz and 2×2 MIMO
BluetoothBluetooth 5.0 + LE; A2DP; aptX, aptX HD, LDAC and AACBluetooth 5.0
NFCNFC; Google Cast; FeliCa on Japanese G025MMultifunction NFC with Google Pay; availability varies by market
USBUSB-C 3.1 Gen 1; 3.5 mm headphone jack; supplied cable runs at USB 2.0USB-C
PositioningGPS, GLONASS, Galileo, QZSS and BeiDou outside the USGPS, A-GPS, GLONASS, BeiDou and Galileo

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