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Brand
 xiaomi vivo
Model
 xiaomi redmi k40 vivo y73s
Announced
 2021 February 25 2020 October 12
Status
 Available. Released 2021 March 04 Available. Released 2020 October 16
Device Body
Dimensions
 163.7 x 76.4 x 7.8 mm ( 6.44 x 3.01 x 0.31 in ) 161 x 74 x 7.8 mm ( 6.34 x 2.91 x 0.31 in )
Weight in gram
 196 171.3
SIM card
 dual SIM ( Nano-SIM | dual stand-by ) dual SIM ( Nano-SIM | dual stand-by )
Water Resistance
 No No
Display type
 Super AMOLED | 120hz | hdr10+ | 1300 Luminance units ( the peak ) AMOLED | HDR10
Display resolution
 1080 x 2400 pixels | 20 : 9 ratio ( ~395 pixel per inch density ) 1080 x 2400 pixels | 20 : 9 ratio ( ~409 pixel per inch density )
Display size
 6.67 inches | 107.4 cm2 ( ~85.9% screen to body ratio ) 6.44 inches | 100.1 cm2 ( ~84.0% screen to body ratio )
Display Protection
 corning gorilla glass 5
Operating System
 android 11 | miui 12 android 10 | funtouch 10.5
CPU
 Octa-core ( 1x3.2 GHz kryo 585 & 3x2.42 GHz kryo 585 & 4x1.80 GHz kryo 585 ) Octa-core ( 2x2.0 GHz cortex-a76 & 6x2.0 GHz cortex-a55 )
Chipset
 Qualcomm sm8250-ac snapdragon 870 5g ( 7 nm ) mediatek mt6853v dimensity 720 5g ( 7 nm )
GPU
 adreno 650 mali-g57 mc3
Memory card
 No No
Memory v1
 128gb 6gb RAM 128gb 6gb RAM
Memory v2
 128gb 8gb RAM | 256gb 8gb RAM | 256gb 12gb RAM 128gb 8gb RAM | 256gb 8gb RAM
Primary camera
48 megapixel| lens aperture1.8 | 26mm ( wide ) | 1/2" | 0.8µm | phase detection autofocus
8 megapixel| lens aperture2.2 | 119˚ ( ultrawide )
5 megapixel| lens aperture2.4 | 50mm ( macro ) | 1/5.0" | 1.12µm
48 megapixel| lens aperture1.8 | 26mm ( wide ) | 1/2.0" | 0.8µm | phase detection autofocus
8 megapixel| lens aperture2.2 | 16mm | 120˚ ( ultrawide ) | 1/4.0" | 1.12µm
2 megapixel| lens aperture2.4 | ( depth )
Secondary camera
20 megapixel| lens aperture2.5 | ( wide ) | 1/3.4" | 0.8µm
16 megapixel| lens aperture2.0 | ( wide )
Loud speaker
 Yes with stereo speakers Yes
Audio jack
 No Yes
WLAN
 Wi-Fi 802.11 a/b/g/n/ac/6 | dual-band | Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac | dual-band | Wi-Fi Direct | hotspot
Bluetooth
 5.1.0 | a2dp | le 5.1.0 | a2dp | le | aptx hd
GPS
 Yes with a-gps glonass galileo bds
NFC
 Yes No
Radio
 No No
USB
 USB Type-C 2.0 | otg USB Type-C 2.0 | USB on-the-go
Sensors
 fingerprint ( side-mounted ) | accelerometer | gyroscope | proximity | compass | color spectrum fingerprint ( under display | optical ) | accelerometer | proximity | compass
Battery
 li-po 4520 mAh | Non-removable li-po 4100 mAh | Non-removable
Battery Charge
 33w wired | pd3.0 | qc3 | 100% in 52 min ( advertised ) Fast charging 18w
Colors
 black, white, aurora color black, silver
Network technology
 gsm / cdma / hspa / cdma2000 / lte / 5g gsm / cdma / hspa / lte / 5g
5G bands
 1 | 3 | 28 | 41 | 77 | 78 sa/nsa/sub6 1 | 3 | 28 | 41 | 77 | 78 sa/nsa
Network speed
 hspa lte-a 5g hspa 42.2/5.76 mbps lte-a 5g
GPRS
EDGE
Approx price
  • 230 GBP
  • 276 EUR
  • 2670 NOK
  • 2900 SEK
  • 17200 RUB
  • 280 USD
  • 1450 BRL
  • 400 AUD
  • 360000 KRW
  • 37000 JPY
  • 380 SGD
  • 1230 MYR
  • 1010 AED
  • 4700 ZAR
  • 240 GBP
  • 281 EUR
  • 2770 NOK
  • 3000 SEK
  • 17900 RUB
  • 290 USD
  • 1510 BRL
  • 410 AUD
  • 380000 KRW
  • 39000 JPY
  • 400 SGD
  • 1270 MYR
  • 1050 AED
  • 4800 ZAR