Product
Vivo V17 Pro
Vivo V17 Pro
Xiaomi Redmi K20
Xiaomi Redmi K20
Battery
Charging 18W wired 18W wired
Type 4100 mAh, non-removable Li-Po 4000 mAh, non-removable
Body
Build Glass front (Gorilla Glass 6), glass back (Gorilla Glass 6), plastic frame Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Dimensions 159 x 74.7 x 9.8 mm (6.26 x 2.94 x 0.39 in) 156.7 x 74.3 x 8.8 mm (6.17 x 2.93 x 0.35 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 201.8 g (7.13 oz) 191 g (6.74 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE, aptX HD
NFC Yes (market/region dependent) Yes (China only)
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, GALILEO, BDS
Radio No FM radio
USB USB Type-C 2.0, OTG USB Type-C 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 6 Corning Gorilla Glass 5
Resolution 1080 x 2400 pixels, 20:9 ratio (~409 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
Size 6.44 inches, 100.1 cm2 (~84.3% screen-to-body ratio) 6.39 inches, 100.2 cm2 (~86.1% screen-to-body ratio)
Type Super AMOLED Super AMOLED, HDR
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2019, September 20. Released 2019, September 2019, May. Released 2019, June
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR, panorama Dual-LED flash, HDR, panorama
Quad 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 16mm (ultrawide), 1/4.0", 1.12µm 13 MP, (telephoto), 1/3.1", 1.12µm, PDAF, 2x optical zoom 2 MP, f/2.4, (depth) -
Triple - 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.4, 53mm (telephoto), 1/4.0", 1.12µm, PDAF, 2x optical zoom 13 MP, f/2.4, 12mm (ultrawide), 1/3.1", 1.12µm
Video 4K@30fps, 1080p@30fps 4K@30fps, 1080p@30/120/240fps, 1080p@960fps
Memory
Card slot No No
Internal 128GB 8GB RAM 64GB 6GB RAM, 128GB 6GB RAM, 256GB 8GB RAM
  UFS 2.1 UFS 2.1
Misc
Colors Crystal Black, Crystal Sky, Midnight Ocean Carbon black, Red flame, Glacier blue, Pearl White
Models 1909, PD1931F_EX, 1910 M1903F10I
SAR 0.95 W/kg (head)     0.39 W/kg (body)     1.07 W/kg (head)     0.72 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 5, 8, 38, 39, 40, 41 1, 3, 5, 7, 8, 34, 38, 39, 40, 41
Speed HSPA, LTE HSPA, LTE
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Our Tests
Audio quality Noise -93.5dB / Crosstalk -94.5dB -
Battery (old) Endurance rating 107h -
Camera Photo / Video -
Display 504 nits max brightness (measured) -
Loudspeaker Voice 67dB / Noise 72dB / Ring 89dB -
Performance AnTuTu: 176791 (v7) GeekBench: 6629 (v4.4) GFXBench: 7.3fps (ES 3.1 onscreen) -
Platform
Chipset Qualcomm SDM675 Snapdragon 675 (11 nm) Qualcomm SDM730 Snapdragon 730 (8 nm)
CPU Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver) Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
GPU Adreno 612 Adreno 618
OS Android 9.0 (Pie), Funtouch 9.1 Android 9.0 (Pie), upgradable to Android 10, MIUI 12
Selfie camera
Dual Motorized pop-up 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm Motorized pop-up 8 MP, 17mm (ultrawide) -
Features HDR HDR
Single - Motorized pop-up 20 MP, f/2.2, (wide), 1/3.4", 0.8µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
  - 24-bit/192kHz Hi-Res audio