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plum optimax 12
vivo y55s
vivo x9s
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Brand
 plum vivo vivo
Model
 plum optimax 12 vivo y55s vivo x9s
Announced
 2018 March 2017 February 2017 July
Status
 Available. Released 2018 April Available. Released 2017 February Available. Released 2017 July
Device Body
Dimensions
 188 x 107.5 x 10.3 mm ( 7.40 x 4.23 x 0.41 in ) 147.9 x 72.9 x 7.5 mm ( 5.82 x 2.87 x 0.30 in ) 152.6 x 74 x 7 mm ( 6.01 x 2.91 x 0.28 in )
Weight in gram
 272 142 154
SIM card
 dual SIM ( Mini-SIM | dual stand-by ) dual SIM ( nano-sim/ Micro-SIM | dual stand-by ) dual SIM ( Nano-SIM | dual stand-by )
Water Resistance
 No
Display type
 tn tft IPS LCD capacitive touchscreen 16millioncolors AMOLED capacitive touchscreen 16millioncolors
Display resolution
 600 x 1024 pixels | 16 : 9 ratio ( ~170 pixel per inch density ) 720 x 1280 pixels | 16 : 9 ratio ( ~282 pixel per inch density ) 1080 x 1920 pixels | 16 : 9 ratio ( ~401 pixel per inch density )
Display size
 7.0 inches | 137.9 cm2 ( ~68.2% screen to body ratio ) 5.2 inches | 74.5 cm 5.5 inches | 83.4 cm
Display Protection
Operating System
 android 6.0 ( marshmallow ) android 6 ( marshmallow ) ; funtouch 3 android 7.1 ( nougat ) | upgradable to android 8.0 ( oreo ) ; funtouch 3.1
CPU
 Quad-core 1.3 GHz cortex-a7 Quad-core 1.4 GHz cortex-a53 Octa-core ( 4x1.8 GHz cortex-a72 & 4x1.2 GHz Cortex a53 )
Chipset
 mediatek mt8321 ( 28 nm ) Qualcomm msm8917 snapdragon 425 ( 28 nm ) Qualcomm msm8976 snapdragon 652 ( 28 nm )
GPU
 mali-400 adreno 306 adreno 510
Memory card
 microSD up to 256 GB ( dedicated slot ) No
Memory v1
 8gb 1gb RAM 16gb 2gb RAM 64gb 4gb RAM
Memory v2
 16gb 3gb RAM
Primary camera
5 mega pixel
13 megapixel| lens aperture2.2 | Auto focus
16 megapixel| 1/2.8" | phase detection autofocus
Secondary camera
2 mega pixel
5 megapixel| lens aperture2.2
20 megapixel-- 5 megapixel| depth sensor
Loud speaker
 Yes Yes Yes
Audio jack
 Yes Yes Yes
WLAN
 Wi-Fi 802.11 b/g/n | Wi-Fi Direct | hotspot Wi-Fi 802.11 b/g/n | Wi-Fi Direct | hotspot Wi-Fi 802.11 a/b/g/n/ac | dual-band | Wi-Fi Direct | hotspot
Bluetooth
 4.0 | a2dp 4.2 | a2dp | le 4.2 | a2dp | le
GPS
 Yes with a-gps Yes with a-gps glonass bds Yes with a-gps
NFC
 No
Radio
 FM Radio FM Radio No
USB
 microusb 2.0 microusb 2.0 | USB on-the-go microusb 2.0 | USB on-the-go
Sensors
 accelerometer accelerometer | proximity | compass fingerprint ( front-mounted ) | accelerometer | proximity | compass
Battery
 Li-lon 2400 mAh battery Non-removable Li-lon 2730 mAh battery Non-removable Li-lon 3320 mAh battery
Battery Charge
Colors
 black, silver, gold color gradations gold color gradations, gold color gradations, gray color gradations gold, gold color gradations, black
Network technology
 gsm / hspa gsm / hspa / lte gsm / hspa / evdo / lte
5G bands
Network speed
 hspa 21.1/5.76 mbps hspa 42.2/5.76 mbps lte cat4 150/50 mbps hspa 42.2/5.76 mbps lte-a (2ca) cat6 300/50 mbps
GPRS
EDGE
Approx price
  • 170 GBP
  • 205 EUR
  • 1980 NOK
  • 2100 SEK
  • 12800 RUB
  • 210 USD
  • 1080 BRL
  • 300 AUD
  • 270000 KRW
  • 28000 JPY
  • 280 SGD
  • 910 MYR
  • 750 AED
  • 3500 ZAR
  • 300 GBP
  • 356 EUR
  • 3460 NOK
  • 3700 SEK
  • 22300 RUB
  • 360 USD
  • 1880 BRL
  • 520 AUD
  • 470000 KRW
  • 48000 JPY
  • 490 SGD
  • 1590 MYR
  • 1310 AED
  • 6000 ZAR