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oppo a31
blu studio j8m lte

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Brand
 oppo blu
Model
 oppo a31 blu studio j8m lte
Announced
 2020 February 13 2018 February
Status
 Available. Released 2020 February 14 Available. Released 2018 February
Device Body
 glass front ( gorilla glass 3 ) | plastic back | plastic frame
Dimensions
 163.9 x 75.5 x 8.3 mm ( 6.45 x 2.97 x 0.33 in ) 145 x 72 x 9.4 mm ( 5.71 x 2.83 x 0.37 in )
Weight in gram
 180 140
SIM card
 dual SIM ( Nano-SIM | dual stand-by ) dual SIM ( Micro-SIM | dual stand-by )
Water Resistance
 No
Display type
 IPS LCD | 480 Luminance units ( typ ) IPS LCD capacitive touchscreen | 16millioncolors
Display resolution
 720 x 1600 pixels | 20 : 9 ratio ( ~270 pixel per inch density ) 720 x 1280 pixels | 16 : 9 ratio ( ~294 pixel per inch density )
Display size
 6.5 inches | 102.0 cm2 ( ~82.4% screen to body ratio ) 5.0 inches | 68.9 cm2 ( ~66.0% screen to body ratio )
Display Protection
 corning gorilla glass 3
Operating System
 android 9.0 ( pie ) | coloros 6.1 android 7.0 ( nougat )
CPU
 Octa-core ( 4x2.3 GHz cortex-a53 & 4x1.8 GHz cortex-a53 ) Quad-core 1.3 GHz cortex-a53
Chipset
 mediatek mt6765v/cb helio p35 ( 12nm ) mediatek mt6737 ( 28 nm )
GPU
 powervr ge8320 mali-t720
Memory card
 microsdxc
Memory v1
 64gb 4gb RAM 16gb 2gb RAM
Memory v2
 128gb 4gb RAM | 128gb 6gb RAM
Primary camera
12 megapixel| lens aperture1.8 | ( wide ) | 1/2.86" | 1.25µm | phase detection autofocus
2 megapixel| lens aperture2.4 | ( macro )
2 megapixel| lens aperture2.4 | ( depth )
8 mega pixel
Secondary camera
8 megapixel| lens aperture2.0 | ( wide ) | 1/4.0" | 1.12µm
5 mega pixel
Loud speaker
 Yes Yes
Audio jack
 Yes Yes
WLAN
 Wi-Fi 802.11 a/b/g/n/ac | dual-band | Wi-Fi Direct | hotspot Wi-Fi 802.11 b/g/n | Wi-Fi Direct | hotspot
Bluetooth
 5.0 | a2dp | le 4.0 | a2dp
GPS
 Yes with a-gps glonass bds Yes with a-gps
NFC
 No
Radio
 FM Radio FM Radio
USB
 microusb 2.0 | USB on-the-go microusb 2.0
Sensors
 fingerprint ( rear-mounted ) | accelerometer | gyroscope | proximity | compass fingerprint ( rear-mounted ) | accelerometer | proximity
Battery
 li-po 4230 mAh | Non-removable Non-removable li-po 2000 mAh battery
Battery Charge
Colors
 white color gradations, black color gradations, green color gradations black, gold
Network technology
 gsm / hspa / lte gsm / hspa / lte
5G bands
Network speed
 hspa 42.2/5.76 mbps lte-a hspa 42.2/5.76 mbps lte cat4 150/50 mbps
GPRS
EDGE
Approx price
  • 150 GBP
  • 190 EUR
  • 1730 NOK
  • 1900 SEK
  • 11200 RUB
  • 180 USD
  • 940 BRL
  • 260 AUD
  • 240000 KRW
  • 24000 JPY
  • 250 SGD
  • 800 MYR
  • 660 AED
  • 3000 ZAR
  • 90 GBP
  • 103 EUR
  • 990 NOK
  • 1100 SEK
  • 6400 RUB
  • 110 USD
  • 540 BRL
  • 150 AUD
  • 140000 KRW
  • 14000 JPY
  • 140 SGD
  • 460 MYR
  • 380 AED
  • 1800 ZAR