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alcatel 3x (2019)
vivo y31d
oppo a6s 4g
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Brand
 alcatel vivo oppo
Model
 alcatel 3x (2019) vivo y31d oppo a6s 4g
Announced
 2019 September. Released 2019 Q4 2026 January 16 2026 January 09
Status
 discontinued Available. Released 2026 January Available. Released 2026 January 09
Device Body
 glass front | plastic back | plastic frame glass front | plastic frame | plastic back glass front | plastic frame | plastic back
Dimensions
 164.9 x 75.8 x 8.4 mm ( 6.49 x 2.98 x 0.33 in ) 166.6 x 78.4 x 8.4 mm ( 6.56 x 3.09 x 0.33 in ) 166.6 x 78.5 x 8.6 mm ( 6.56 x 3.09 x 0.34 in )
Weight in gram
 178 219 215
SIM card
 Nano-SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Water Resistance
 No ip68/ip69 dust tight and water resistant high pressure water jets; immersible up to 1.5meterfor 30 min ip68/ip69 dust tight and water resistant high pressure water jets; immersible up to 1.5meterfor 30 min
Display type
 IPS LCD IPS LCD | 120hz | 1250 Luminance units ( hbmillion) IPS LCD | 120hz | 1125 Luminance units ( the peak )
Display resolution
 720 x 1600 pixels | 20 : 9 ratio ( ~269 pixel per inch density ) 720 x 1570 pixels | 19.5 : 9 ratio ( ~256 pixel per inch density ) 720 x 1570 pixels | 19.5 : 9 ratio ( ~256 pixel per inch density )
Display size
 6.52 inches | 102.6 cm2 ( ~82.1% screen to body ratio ) 6.75 inches | 111.4 cm2 ( ~85.3% screen to body ratio ) 6.75 inches | 111.4 cm2 ( ~85.2% screen to body ratio )
Display Protection
Operating System
 android 9.0 ( pie ) android 16 | originos 6 android 15 | coloros 15
CPU
 Octa-core ( 4x2.0 GHz cortex-a53 & 4x1.5 GHz cortex-a53 ) Octa-core ( 4x2.9 GHz cortex-a73 & 4x1.9 GHz cortex-a53 ) Octa-core ( 4x2.8 GHz cortex-a73 & 4x1.9 GHz cortex-a53 )
Chipset
 mediatek mt6763v helio p23 ( 16 nm ) Qualcomm snapdragon 6s 4g generation 2 Qualcomm sm6225 snapdragon 685 ( 6 nm )
GPU
 mali-g71 mp2 adreno adreno 610
Memory card
 microsdxc ( dedicated slot ) No microsdxc
Memory v1
 64gb 4gb RAM 128gb 6gb RAM 128gb 8gb RAM
Memory v2
 128gb 6gb RAM 256gb 6gb RAM | 256gb 8gb RAM 256gb 8gb RAM
Primary camera
16 megapixel| lens aperture1.8 | 27mm ( wide ) | 1/2.8" | 1.12µm | phase detection autofocus
8 megapixel| lens aperture2.2 | 17mm ( ultrawide ) | 1/4.0" | 1.12µm
5 megapixel| lens aperture2.4 | ( depth )
50 megapixel| lens aperture2.0 | 21mm ( wide ) | phase detection autofocus
auxiliary lens
50 megapixel| lens aperture1.8 | ( wide ) | phase detection autofocus
auxiliary lens
Secondary camera
8 megapixel| lens aperture2.0 | 25mm ( wide ) | 1/4.0" | 1.12µm
8 megapixel| lens aperture2.1 | ( wide )
16 megapixel| lens aperture2.4 | ( wide )
Loud speaker
 Yes Yes with stereo speakers Yes with stereo speakers
Audio jack
 Yes No No
WLAN
 Wi-Fi 802.11 b/g/n | Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac | dual-band Wi-Fi 802.11 a/b/g/n/ac | dual-band
Bluetooth
 4.2 | a2dp | le 5.1.0 | a2dp | le 5.0 | a2dp | le | aptx
GPS
NFC
 Yes No Yes ( market/region dependent )
Radio
 FM Radio No unspecified
USB
 USB Type-C 2.0 USB Type-C 2.0 | otg USB Type-C 2.0 | otg
Sensors
 fingerprint ( rear-mounted ) | accelerometer | proximity fingerprint ( side-mounted ) | accelerometer | gyroscope | proximity | compass fingerprint ( side-mounted ) | accelerometer | proximity | compass
Battery
 li-po 4000 mAh | Non-removable si/c Li-lon 7200 mAh si/c Li-lon 7000 mAh
Battery Charge
 10w wired 44w wired | 50% in 43 min | reverse wired | bypass charging 80w wired | 33w pps | 13.5w pd | 56% in 30 min | 5w reverse wired
Colors
 black color gradations, green color gradations, jewelry rose white color gradations, grey color gradations brown color gradations, white color gradations
Network technology
 gsm / hspa / lte gsm / hspa / lte gsm / hspa / lte
5G bands
Network speed
 hspa 42.2/11.5 mbps lte cat4 150/50 mbps hspa lte hspa lte
GPRS
EDGE
Approx price
  • 130 GBP
  • 151 EUR
  • 1490 NOK
  • 1600 SEK
  • 9600 RUB
  • 160 USD
  • 810 BRL
  • 220 AUD
  • 200000 KRW
  • 21000 JPY
  • 210 SGD
  • 680 MYR
  • 560 AED
  • 2600 ZAR