Realme C21 vs vivo X Fold
Realme C21
vivo X Fold
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900; CDMA 800, 1900
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3G networkHSDPA 850, 900, 2100HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x
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4G networkLTE frequency band 1, 3, 5, 7, 8, 20, 28, 38, 40, 41LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 32, 66
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5G network-5G band 1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 40, 41, 66, 77, 78, 79 SA/NSA
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HSDPA speed42.2 Mbps42.2 Mbps
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HSUPA speed5.76 Mbps5.76 Mbps
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LTE speedLTE, Cat4, 150 Mbps download, 51 Mbps uploadLTE-A
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2021-032022-04
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Status2021-032022-04
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Design
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BuildGlass front, plastic back, plastic frameAluminium alloy, glass
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SIMDual SIM (Nano-SIM, dual stand-by)Nano-SIM
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Height165.2 mm162 mm
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Width76.4 mm74.5 mm
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Thickness8.9 mm14.6 mm
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Height unfolded-162 mm
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Width unfolded-144.9 mm
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Thickness unfolded-6.3 mm
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Weight190 g311 g
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ColorsBlack, BlueBlack, Blue
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Display
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Display typeIPS LCDFoldable LTPO AMOLED
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Physical size6.5 inches8.03 inches
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Resolution720 x 1600 pixels1916 x 2160 pixels
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Pixel density270 ppi360 ppi
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Display colors1677721616777216
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ProtectionScratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 3Scratch resistant
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Display features-120Hz, HDR10+
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Cover display-AMOLED
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Cover display physical size-6.53 inches
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Cover display resolution-1080 x 2520 pixels
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.3 GHz Cortex-A53Single-core 3.0 GHz Cortex-X2
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CPU(second)quad-core 1.8 GHz Cortex-A53Triple-core 2.50 GHz Cortex-A710
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CPU(third)Quad-core 1.8 GHz Cortex-A510
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ChipsetMediaTek Helio G35Qualcomm SM8450 Snapdragon 8 Gen 1
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GPUPowerVR GE8320Adreno 730
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Memory RAM3, 4 GB12 GB
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Internal storage32, 64 GB256, 512 GB
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Memory cardmicroSD, microSDHC, microSDXCNo
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Memory card max256 GB-
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StorageeMMC 5.1UFS 3.1
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OS
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OSAndroid 10, Realme UI 1.0 / Android 11, Realme UI 2.0Android 12, Origin OS Ocean
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Main camera
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Camera typeTripleQuad
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Main camera(wide) , 13 MP, f/2.2 , 26 mm, 1/3.06" , 1.12 µm(wide) , 50 MP, f/1.8 , 1/1.57" , 1.0 µm
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(macro) , 2 MP, f/2.4(periscope telephoto) , 8 MP, f/3.4 , 125 mm, 5x optical zoom
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(depth) , 2 MP, f/2.4(telephoto) , 12 MP, f/2.0 , 47 mm, 2x optical zoom
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(ultrawide) , 48 MP, f/2.2 , 114˚ , 14 mm
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Primary camera resolution2560 x 1920 pixels8192 x 6144 pixels
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Primary camera video1080p@30fps8K@30fps, 4K@30/60fps, 1080p@30/60fps, gyro-EIS
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Primary camera optics-Zeiss optics
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Primary camera flashLED flashdual-LED flash
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Camera featuresAutofocus, digital zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocusAutofocus, continuous autofocus, continuous shooting, digital zoom, optical zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, face unlock, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, laser autofocus
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Selfie camera
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Selfie camera typeSingleSingle
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Selfie camera(wide) , 5 MP, f/2.2 , 1/5.0" , 1.12 µm(wide) , 16 MP, f/2.5
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Selfie camera resolution2560 x 1920 pixels4608 x 3456 pixels
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Selfie camera featuresFace unlock, HDR, panoramaDigital image stabilization, face detection, face unlock, HDR
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Selfie camera video1080p@30fps1080p@30fps
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes, with stereo speakers
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EarpieceYesYes
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Multimedia
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RadioFM RadioNo
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax
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WLAN WiFi HotspotYesYes
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WLAN WiFi Direct-Yes
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WLAN WiFi Dual Band-Yes
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USBmicroUSB 2.0Type-C 3.1
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USB On-The-GoYesYes
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Bluetoothv5.0v5.2
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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Bluetooth AptX-aptX HD
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Infrared-Yes
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NFCNoYes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEO-Yes
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BDSYesYes
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QZSS-Yes
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NavIC-Yes
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Features
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SensorsAccelerometer, compass, fingerprint, proximityAccelerometer, barometer, compass, fingerprint, gyroscope, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-PoLi-Po
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Battery capacity5000 mAh4600 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYesYes, 66W (100% in 37 min)
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Reverse chargingYes-
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Wireless reverse charging-Yes, 10W
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Fast wireless charging-Yes, 50W
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Talk time 3G-22.6 h
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Tests and performance
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Antutu110490 (v8)1073500 (v9)
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Geekbench(single-core)174 (v5.2)1278 (v5.2)
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Geekbench(multi-core)982 (v5.2)4189 (v5.2)
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Cost
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Price130 USD1430 USD