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vivo X21i vs vivo NEX 3

 
Brief information about compared phones: vivo NEX 3 , vivo X21i

vivo NEX 3 2019 year of release, cpu Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485), screen 6.89", with resolution 1080x2256. Smartphone has 16 megapixel front camera and 64 megapixel main camera.

vivo X21i 2018 year of release, cpu Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53), screen 6.28", with resolution 1080x2280. Smartphone has 24 megapixel front camera and 12 megapixel main camera.

Display Technology Super AMOLED Super AMOLED
Touchscreen capacitive touchscreen capacitive touchscreen
Display colors 16M 16M
Screen size 6.89" inch 6.28" inch
Screen area 119.3 cm2 98.4 cm2
Screen format (height:width) 19:9 (height:width)
Screen to body ratio 93.6% 85.0%
Screen resolution 1080 x 2256 px 1080 x 2280 px
PPI /points per inch/ 0 PPI 402 PPI
Camera and Video Rear camera, main 64 MP, Triple 12 MP, Dual
Camera specs 64 MP, f/1.8, (wide), 1/1.7'', 0.8µm, PDAF -13 MP, f/2.5, (telephoto), f/2.2, (ultrawide), PDAF 12 MP, f/1.8, 1/2.55'', 1.4µm, dual pixel PDAF -5 MP, f/2.0, depth sensor
Functions LED flash, HDR LED flash, HDR, panorama
Video 1080p@30fps 1080p@30fps
Front camera, selfie 16 MP, Single 24 MP, Single
Specifications Motorized pop-up 16 MP, f/2.1 24 MP
Performance Operating system OS Android 9.0 (Pie); Funtouch 9.1 Android 8.1 (Oreo); Funtouch 4
Chipset Qualcomm SDM855 Snapdragon 855+ (7 nm) Mediatek MT6771 Helio P60 (12 nm)
Processor CPU Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485) Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
Graphics processor GPU Adreno 640 (700 MHz) Mali-G72 MP3
External memory No microSD, up to 256 GB (uses SIM 2 slot)
Internal memory 128GB 8GB RAM, UFS3.0 128 GB, 4 GB RAM 64 GB, 6 GB RAM
Antutu 7 score 130256
GeekBench 4 Single Core 1497
GeekBench 4 Multi-Core 5759
Antutu 8 score 483427
General specs Release date 2019, September 2018, May
Dimensions (HxWxD) 167.4 Х 76.1 Х 9.4 mm 154.4 Х 75 Х 7 mm
Weight 217.3 g 159 g
Colors Liquid Tianhe, Deep air streamer Black, Aurora White, Ruby Red, Night Purple
Battery 4500 mAh,  Non-removable Li-Po 3425 mAh,  Non-removable Li-Ion
Approximate price 640 EUR 430 EUR
Body build Front/back glass, aluminum frame
Communication and Connectivity SIM card Dual SIM (Nano-SIM, dual stand-by) Hybrid Dual SIM (Nano-SIM, dual stand-by)
Network Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2  CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100   CDMA2000 1xEV-DO -4G - LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 26(850), 28(700), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2  CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 2100 -4G - LTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)
Speed HSPA 42.2/5.76 Mbps, LTE-A (5CA) Cat18 1200/150 Mbps HSPA, LTE
GPRS Yes Yes
Edge Yes Yes
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
GPS Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS, GLONASS
NFC
USB 2.0, Type-C 1.0 reversible connector, USB On-The-Go microUSB 2.0, USB On-The-Go
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE
Music and Audio Radio No FM radio
Headphone jack Yes Yes
Others HDR10 32-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features Dop Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass - Fast battery charging 44W Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass - Fast battery charging

An overview of the main advantages of each of the devices

Reasons to buy NEX 3
  • Screen 6.89"
  • Front camera 16 MP
  • Main camera 64 MP
Reasons to buy X21i
  • Screen 6.28"
  • Front camera 24 MP
  • External memory microSD GB