Compare Devices
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Brand | oppo | xiaomi | vivo |
Model | oppo k1 | xiaomi mi a1 (mi 5x) | vivo y91i |
Announced | 2018 October | 2017 September | 2018 November |
Status | Available. Released 2018 October | Available. Released 2017 September | Available. Released 2018 November |
Device Body | glass front ( gorilla glass 5 ) | plastic back | plastic frame | ||
Dimensions | 158.3 x 75.5 x 7.4 mm ( 6.23 x 2.97 x 0.29 in ) | 155.4 x 75.8 x 7.3 mm ( 6.12 x 2.98 x 0.29 in ) | 155.1 x 75.1 x 8.3 mm ( 6.11 x 2.96 x 0.33 in ) |
Weight in gram | 156 | 165 | 163.5 |
SIM card | dual SIM ( Nano-SIM | dual stand-by ) | Hybrid dual SIM ( Nano-SIM | dual stand-by ) | dual SIM ( Nano-SIM | dual stand-by ) |
Water Resistance | No | ||
Display type | Super AMOLED | ltps IPS LCD | IPS LCD |
Display resolution | 1080 x 2340 pixels | 19.5 : 9 ratio ( ~402 pixel per inch density ) | 1080 x 1920 pixels | 16 : 9 ratio ( ~403 pixel per inch density ) | 720 x 1520 pixels | 19 : 9 ratio ( ~271 pixel per inch density ) |
Display size | 6.4 inches | 101.0 cm2 ( ~84.5% screen to body ratio ) | 5.5 inches | 82.6 cm2 ( ~70.1% screen to body ratio ) | 6.2 inches | 95.9 cm2 ( ~82.4% screen to body ratio ) |
Display Protection | corning gorilla glass 5 | ||
Operating System | android 8.1 ( oreo ) | coloros 5.2 | android 7.1.2 ( nougat ) | upgradable to android 9.0 ( pie ) | android one | android 8.1 ( oreo ) | funtouch 4.5 |
CPU | Octa-core ( 4x2.0 GHz kryo 260 gold & 4x1.8 GHz kryo 260 silver ) | Octa-core 2.0 GHz cortex-a53 | Octa-core ( 4x1.95 GHz cortex-a53 & 4x1.45 GHz Cortex a53 ) |
Chipset | Qualcomm sdm660 snapdragon 660 ( 14 nm ) | Qualcomm msm8953 snapdragon 625 ( 14 nm ) | Qualcomm sdm439 snapdragon 439 ( 12 nm ) |
GPU | adreno 512 | adreno 506 | adreno 505 |
Memory card | microsdxc ( dedicated slot ) | microsdxc ( uses shared sim slot ) | microsdxc |
Memory v1 | 64gb 4gb RAM | 64gb 4gb RAM | 16gb 2gb RAM |
Memory v2 | 64gb 6gb RAM | ||
Primary camera | 16 megapixel| lens aperture1.8 | 1/2.8" | 1.12µm | phase detection autofocus 2 megapixel| lens aperture2.4 | ( depth ) | 12 megapixel| lens aperture2.2 | 26mm ( wide ) | 1/2.9" | 1.25µm | phase detection autofocus 12 megapixel| lens aperture2.6 | 50mm ( telephoto ) | 1.0µm | Auto focus | 2x optical zoom | 13 megapixel| lens aperture2.2 | phase detection autofocus 2 megapixel| lens aperture2.4 | ( depth ) |
Secondary camera | 25 megapixel| lens aperture2.0 | 1/2.8" | 0.9µm | 5 mega pixel | 8 megapixel| lens aperture2.0 |
Loud speaker | Yes | Yes | Yes |
Audio jack | Yes | Yes | Yes |
WLAN | Wi-Fi 802.11 а/b/g/n/ac | dual-band | Wi-Fi Direct | hotspot | 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 | 4.2 | a2dp | le | 4.2 | a2dp | le |
GPS | Yes with a-gps | Yes with a-gps glonass bds | Yes with a-gps glonass bds |
NFC | No | No | No |
Radio | No | FM Radio | FM Radio |
USB | microusb 2.0 | USB on-the-go | USB Type-C 2.0 | microusb 2.0 | USB on-the-go |
Sensors | fingerprint ( under display | optical ) | accelerometer | gyroscope | proximity | compass | fingerprint ( rear-mounted ) | accelerometer | gyroscope | proximity | fingerprint ( rear-mounted ) | accelerometer | proximity | compass |
Battery | Li-lon 3600 mAh | Non-removable | li-po 3080 mAh | Non-removable | li-po 4030 mAh | Non-removable |
Battery Charge | charging 10w | ||
Colors | blue, red, green color gradations | black, gold, gold color gradations, red | black color gradations, ocean color color gradations, red |
Network technology | gsm / hspa / lte | gsm / hspa / lte | gsm / hspa / lte |
5G bands | |||
Network speed | hspa 42.2/11.5 mbps lte-a (2ca) cat6 300/50 mbps | hspa 42.2/5.76 mbps lte-a (2ca) cat6 300/50 mbps | hspa 42.2/5.76 mbps lte |
GPRS | |||
EDGE | |||
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