Fairphone 4 vs Xiaomi Redmi K20
Fairphone 4
Xiaomi Redmi K20
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900, CDMA 800
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3G networkHSDPA 850, 900, 1700(AWS), 1900, 2100HSDPA 850, 900, 1700, 1900, 2100, TD-SCDMA 1900, 2000
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 18, 19, 20, 28, 32, 38, 40, 41, 71LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
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5G network5G band 1, 3, 5, 7, 8, 20, 28, 38, 41, 71, 77, 78 SA/NSA/Sub6-
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HSDPA speed42.2 Mbps42 Mbps
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HSUPA speed5.76 Mbps5.76 Mbps
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EV-DO speed-3.1 Mbps download, 1.8 Mbps upload
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LTE speedLTE-A (4CA), Cat18, 1200 Mbps download, 150 Mbps upload-
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5G speed2.3 Gbps download-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2021-092019-5
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Status2021-092019-6
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Design
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BuildGlass front (Gorilla Glass 5), plastic back, plastic frameAluminium alloy, glass
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual SIM stand-by)
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Height162 mm156.7 mm
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Width75.5 mm74.3 mm
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Thickness10.5 mm8.8 mm
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Weight225 g191 g
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WaterproofIP54-
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Dust proofIP54-
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MIL-STD-810GYes-
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ColorsGray, Green, Speckled GreenBlack, Blue, Red
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Display
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Display typeIPS LCDSuper AMOLED capacitive touchscreen
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Physical size6.3 inches6.39 inches
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Resolution1080 x 2340 pixels1080 x 2340 pixels
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Pixel density409 ppi403 ppi
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Display colors1677721616777216
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ProtectionScratch resistant, Corning Gorilla Glass 52.5D curved glass screen, Scratch resistant, Corning Gorilla Glass 6
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Multitouch-Yes
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Display features-HDR 10, Always-On display
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Hardware
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CPUOcta-coreOcta-core
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CPUDual-core 2.2 GHz Kryo 570Dual-core 2.2 GHz Kryo 470
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CPU(second)Hexa-core 1.8 GHz Kryo 570Hexa-core 1.8 GHz Kryo 470
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ChipsetQualcomm SM7225 Snapdragon 750G 5GQualcomm Snapdragon 730
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GPUAdreno 619Adreno 618
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Memory RAM6, 8 GB6, 8 GB
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Internal storage128, 256 GB64, 128, 256 GB
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Memory cardmicroSD, microSDHC, microSDXCNo
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Memory card max2 TB-
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Storage-UFS 2.1
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OS
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OSAndroid 11MIUI V10.2 (Android 9.0 Pie)
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Main camera
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Camera typeTripleTriple
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Main camera(wide) , 48 MP, f/1.6 , 1/2.0" , 0.8 µm, 8x digital zoom48 MP, f/1.8 , 1/2" , 0.8 µm, 26 mm, 2x optical zoom
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(ultrawide) , 48 MP, f/2.2 , 120˚ , 1/2.0" , 0.8 µm8 MP, f/2.4 , 1/4" , 1.12 µm, 53 mm
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TOF 3D13 MP, f/2.4 , 12 mm, 1/3" , 1.12 µm
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Primary camera resolution8000 x 6000 pixels8000 x 6000 pixels
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Primary camera video4K@30fps, 1080p@30/60fps, gyro-EIS2160p@30fps, 1080p@960fps
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Primary camera flashdual-LED dual-tone flashdual LED flash
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Camera featuresAutofocus, continuous shooting, digital zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, scene-mode, phase detection autofocusAutofocus, continuous shooting, digital zoom, optical zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro mode, RAW, phase detection
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Selfie camera
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Selfie camera typeSingle-
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Selfie camera(wide) , 25 MP, f/2.2 , 1/2.78" , 0.9 µm20 MP, f/2.2 , 18 mm
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Selfie camera resolution-5184 x 3880 pixels
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Selfie camera featuresDigital image stabilization, face detection, face unlock, HDR-
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Selfie camera video1080p@30fps, gyro-EIS1080p@30fps
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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EarpieceYesYes
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Multimedia
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RadioNoNo
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11acWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYesYes
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Wi-Fi display-Yes
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WLAN WiFi Dual BandYesYes
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USBType-C 3.0, DisplayPortType-C reversible connector
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USB On-The-Go-Yes
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Bluetoothv5.1v5.0
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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NFCYesYes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEOYes-
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Beidou-Yes
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BDSYes-
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Features
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SensorsAccelerometer, compass, fingerprint, gyroscope, proximityAccelerometer, proximity, light, compass, in-display fingerprint, gyroscope, barometer, hall, step detector, step counter
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity3905 mAh4000 mAh
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Battery removableRemovableNon-removable
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Fast battery chargingQuick Charge, 20W (50% in 30 min)Qualcomm Quick Charge 4+
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Talk time 3G30 h-
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Talk time 4G13 h-
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Standby time 4G200 h-
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Tests and performance
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Antutu385000 (v9)-
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Geekbench(single-core)642 (v5.4)-
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Geekbench(multi-core)1878 (v5.4)-
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SAR value
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SAR EU(head)0.49 W/kg-
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SAR EU(body)0.99 W/kg-
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Cost
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Price670 USD-