vivo iQOO U3x Standard vs vivo Y31s

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PHONES
Phone Names vivo iQOO U3x Standard vivo Y31s
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 2100
4G bands1, 3, 5, 8, 34, 38, 39, 40, 411, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41
5G bands-1, 3, 28, 41, 77, 78 SA/NSA
SpeedHSPA, LTEHSPA, LTE, 5G
TechnologyGSM / CDMA / HSPA / CDMA2000 / LTEGSM / CDMA / HSPA / CDMA2000 / LTE / 5G
 CDMA2000 1x CDMA2000 1x
Launch
Announced2021, June 072021, January 12
StatusAvailable. Released 2021, June 09Available. Released 2021, January 15
Body
BuildGlass front, plastic back, plastic frame-
Dimensions164.4 x 76.3 x 8.4 mm (6.47 x 3.00 x 0.33 in)164.2 x 75.4 x 8.4 mm (6.46 x 2.97 x 0.33 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight191.4 g (6.74 oz)185.5 g (6.56 oz)
Display
Resolution720 x 1600 pixels, 20:9 ratio (~270 ppi density)1080 x 2408 pixels, 20:9 ratio (~400 ppi density)
Size6.51 inches, 102.3 cm2 (~81.6% screen-to-body ratio)6.58 inches, 104.8 cm2 (~84.7% screen-to-body ratio)
TypeIPS LCDIPS LCD, 90Hz
Platform
CPUOcta-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)Octa-core (2x2.0 GHz Kryo 460 & 6x1.8 GHz Kryo 460)
ChipsetMediatek MT6769V/CU Helio G80 (12 nm)Qualcomm SM4350 Snapdragon 480 5G (8 nm)
GPUMali-G52 MC2Adreno 619
OSAndroid 11, OriginOS 1.0 for iQOOAndroid 11, Funtouch 10.5
Memory
Card slotmicroSDXC (dedicated slot)No
Internal128GB 4GB RAM, 128GB 6GB RAM64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
 eMMC 5.1UFS 2.1
Main Camera
Dual13 MP, f/2.2, (wide), PDAF Auxiliary lens13 MP, f/2.2, (wide), PDAF Auxiliary lens
FeaturesLED flash, HDRLED flash, HDR, panorama
Single8 MP, f/1.8, (wide)-
Video1080p@30fps4K@30fps, 1080p@30fps
Selfie camera
Features-HDR
Single8 MP, f/1.8, (wide)8 MP, f/2.0, (wide)
Video1080p@30fps1080p@30fps
Sound
3.5mm jack YesYes
35mm jackYesYes
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, LE, aptX5.1, A2DP, LE, aptX HD
NFCNoNo
PositioningGPS, GLONASS, GALILEO, BDSGPS, GLONASS, BDS, GALILEO
RadioNoNo
USBmicroUSB 2.0, OTGUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (side-mounted), accelerometer, proximity, compassFingerprint (side-mounted), accelerometer, proximity, compass
Battery
Charging18W wired18W wired
Type5000 mAh5000 mAh
Misc
ColorsBlack, SilverRed, Gray, Aurora
ModelsV2143AV2054A, V2068A
PriceAbout 120 EURAbout 190 EUR