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Specifications
Selected: Cubot C21
Selected: vivo X9s
Network
TechnologyNo cellular connectivityGSM / HSPA / EVDO / LTE
2G bands N/AGSM 900 / 1800 - SIM 1 & SIM 2
3G bands N/AHSDPA 850 / 900 / 1900 / 2100
4G bands N/A1, 3, 4, 5, 8, 38, 39, 40, 41
SpeedNoHSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
GPRSNo
EDGENo
 CDMA2000 1xEV-DO & TD-SCDMA
Launch
Announced2023, November2017, July. Released 2017, July
StatusAvailable. Released 2023, NovemberDiscontinued
Body
Dimensions46.5 x 46.5 x 13 mm (1.83 x 1.83 x 0.51 in)152.6 x 74 x 7 mm (6.01 x 2.91 x 0.28 in)
Weight-154 g (5.43 oz)
BuildZinc alloy frame
SIMNoNano-SIM + Nano-SIM
 IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)
Display
TypeTFT LCDAMOLED
Size1.32 inches5.5 inches, 83.4 cm2 (~73.8% screen-to-body ratio)
Resolution360 x 360 pixels (~386 ppi density)1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
ProtectionCorning Gorilla Glass
Platform
OSProprietary OSAndroid 7.1 (Nougat), upgradable to Android 8.0 (Oreo), Funtouch 3.1
ChipsetQualcomm MSM8976 Snapdragon 652 (28 nm)
CPUOcta-core (4x1.8 GHz Cortex-A72 & 4x1.2 GHz Cortex A53)
GPUAdreno 510
Memory
Card slotNoNo
Internal128MB64GB 4GB RAM
 eMMC 5.1
Camera
 No
Sound
LoudspeakerNoYes
3.5mm jackNoYes
 32-bit/192kHz audio
Comms
WLANNoWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth5.0, A2DP4.2, A2DP, LE
PositioningNoGPS
NFCNoNo
RadioNoNo
USBNomicroUSB 2.0, OTG
Features
SensorsAccelerometer, heart rate, SpO2, blood pressureFingerprint (front-mounted), accelerometer, proximity, compass
Battery
Type300 mAhLi-Ion 3320 mAh, non-removable
Charging10W wired
Misc
ColorsBlack, SilverGold, Rose Gold, Black
PriceAbout 40 EURAbout 350 EUR
Main Camera
Single16 MP, 1/2.8", PDAF
FeaturesLED flash, HDR, panorama
Video1080p@30fps
Selfie Camera
Dual20 MP, f/2.0, (wide), 1/2.8", 1.0µm
5 MP, depth sensor
FeaturesLED flash
Video