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日本語 Compare Devices
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Brand | vivo | apple | blu |
Model | vivo y81i | apple ipad air (2019) | blu studio j8 lte |
Announced | 2018 October | 2019 March 18 | 2017 July |
Status | Available. Released 2018 November | Available. Released 2019 March 18 | Available. Released 2017 July |
Device Body | glass front | aluminum back | aluminum frame | ||
Dimensions | 155.1 x 75 x 7.8 mm ( 6.11 x 2.95 x 0.31 in ) | 250.6 x 174.1 x 6.1 mm ( 9.87 x 6.85 x 0.24 in ) | 155.7 x 77.6 x 8.9 mm ( 6.13 x 3.06 x 0.35 in ) |
Weight in gram | 143 | 456 | 183 |
SIM card | dual SIM ( Nano-SIM | dual stand-by ) | Nano-SIM and eSIM | dual SIM ( nano-sim/ Micro-SIM ) |
Water Resistance | No | ||
Display type | IPS LCD | IPS LCD | IPS LCD capacitive touchscreen | 16millioncolors |
Display resolution | 720 x 1520 pixels | 19 : 9 ratio ( ~270 pixel per inch density ) | 1668 x 2224 pixels | 4 : 3 ratio ( ~265 pixel per inch density ) | 720 x 1280 pixels | 16 : 9 ratio ( ~267 pixel per inch density ) |
Display size | 6.22 inches | 96.6 cm2 ( ~83.0% screen to body ratio ) | 10.5 inches | 341.4 cm2 ( ~78.3% screen to body ratio ) | 5.5 inches | 83.4 cm2 ( ~69.0% screen to body ratio ) |
Display Protection | scratch-resistant glass | oleophobic coating | ||
Operating System | android 8.1 ( oreo ) | funtouch 4 | iOS 12.1.3 | upgradable to iPadOS 17.1.1 | android 7.0 ( nougat ) |
CPU | Quad-core 2.0 GHz cortex-a53 | Hexa-core ( 2x2.5 GHz vortex + 4x1.6 GHz tempest ) | Quad-core 1.3 GHz cortex-a53 |
Chipset | mediatek mt6761 helio a22 ( 12 nm ) | apple a12 Bionic ( 7 nm ) | mediatek mt6737 ( 28 nm ) |
GPU | powervr ge8320 | apple GPU ( 4-core graphics ) | mali-t720 |
Memory card | microsdxc ( dedicated slot ) | No | microsdxc |
Memory v1 | 16gb 2gb RAM | 64gb 3gb RAM | 8gb 1gb RAM |
Memory v2 | 256gb 3gb RAM | 16gb 2gb RAM | |
Primary camera | 13 megapixel| lens aperture2.2 | phase detection autofocus | 8 megapixel| lens aperture2.4 | 31mm ( standard ) | 1.12µm | Auto focus | 8 mega pixel |
Secondary camera | 5 megapixel| lens aperture2.2 | 7 megapixel| lens aperture2.2 | 31mm ( standard ) | 5 mega pixel |
Loud speaker | Yes | Yes with stereo speakers | Yes |
Audio jack | Yes | Yes | Yes |
WLAN | Wi-Fi 802.11 b/g/n | Wi-Fi Direct | hotspot | Wi-Fi 802.11 a/b/g/n/ac | dual-band | hotspot | Wi-Fi 802.11 b/g/n | Wi-Fi Direct | hotspot |
Bluetooth | 5.0 | a2dp | le | 5.0 | a2dp | edr | 4.1.0 | a2dp | le |
GPS | Yes with a-gps glonass bds | Yes with a-gps | |
NFC | No | No | |
Radio | FM Radio | No | FM Radio |
USB | microusb 2.0 | USB on-the-go | lightning | USB 2.0 | microusb 2.0 | USB on-the-go |
Sensors | accelerometer | proximity | compass | fingerprint ( front-mounted ) | accelerometer | gyroscope | compass | barometer | fingerprint ( rear-mounted ) | accelerometer | proximity |
Battery | li-po 3260 mAh | Non-removable | li-po 8134 mAh | Non-removable ( 30.8watt per hour ) | Non-removable li-po 2500 mAh battery |
Battery Charge | |||
Colors | black, red | gray color gradations, silver, gold | black, gold, gold color gradations, silver |
Network technology | gsm / hspa / lte | gsm / hspa / lte | gsm / hspa / lte |
5G bands | |||
Network speed | hspa 21.1/5.76 mbps lte-a (2ca) cat7 300/150 mbps | hspa 42.2/5.76 mbps lte-a (ca) cat16 1024/150 mbps | hspa 42.2/11.5 mbps lte cat4 150/50 mbps |
GPRS | |||
EDGE | |||
Approx price |
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110 GBP
130 EUR
1290 NOK
1400 SEK
8300 RUB
140 USD
700 BRL
190 AUD
180000 KRW
18000 JPY
190 SGD
590 MYR
490 AED
2300 ZAR