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Brand | microsoft | oppo | |
Model | microsoft lumia 640 lte | oppo k5 | |
Announced | 2015 March. Released 2015 April | 2019 October | |
Status | discontinued | Available. Released 2019 October | |
Device Body | glass front ( gorilla glass 5 ) | plastic back | plastic frame | ||
Dimensions | 141.3 x 72.2 x 8.8 mm ( 5.56 x 2.84 x 0.35 in ) | 158.7 x 75.2 x 8.6 mm ( 6.25 x 2.96 x 0.34 in ) | |
Weight in gram | 145 | 182 | |
SIM card | Micro-SIM | dual SIM ( Nano-SIM | dual stand-by ) | |
Water Resistance | No | No | |
Display type | IPS LCD | Super AMOLED | 430 Luminance units ( typ ) | |
Display resolution | 720 x 1280 pixels | 16 : 9 ratio ( ~294 pixel per inch density ) | 1080 x 2340 pixels | 19.5 : 9 ratio ( ~402 pixel per inch density ) | |
Display size | 5.0 inches | 68.9 cm2 ( ~67.6% screen to body ratio ) | 6.4 inches | 101.0 cm2 ( ~84.7% screen to body ratio ) | |
Display Protection | corning gorilla glass 3 | corning gorilla glass 5 | |
Operating System | microsoft windows phone 8.1 | upgradable to microsoft windows 10 | android 9.0 ( pie ) | planned upgrade to android 10 | coloros 6.1 | |
CPU | Quad-core 1.2 GHz cortex-a7 | Octa-core ( 2x2.2 GHz kryo 470 gold & 6x1.8 GHz kryo 470 silver ) | |
Chipset | Qualcomm msm8926 snapdragon 400 ( 28 nm ) | Qualcomm sdm730 snapdragon 730g ( 8 nm ) | |
GPU | adreno 305 | adreno 618 | |
Memory card | microsdxc ( dedicated slot ) | microsdxc ( dedicated slot ) | |
Memory v1 | 8gb 1gb RAM | 128gb 6gb RAM | |
Memory v2 | 128gb 8gb RAM | 256gb 8gb RAM | ||
Primary camera | 8 megapixel| lens aperture2.2 | 28mm ( wide ) | 1/4.0" | Auto focus | 64 megapixel| lens aperture1.8 | ( wide ) | 1/1.72" | 0.8µm | phase detection autofocus 8 megapixel| lens aperture2.2 | 13mm ( ultrawide ) | 1/4.0" | 1.12µm 2 megapixel| lens aperture2.4 | ( macro ) 2 megapixel| lens aperture2.4 | ( depth ) | |
Secondary camera | 1 mega pixel | 32 megapixel| lens aperture2.0 | 26mm ( wide ) | 1/2.8" | 0.8µm | |
Loud speaker | Yes | Yes | |
Audio jack | Yes | Yes | |
WLAN | Wi-Fi 802.11 b/g/n | dlna | hotspot | Wi-Fi 802.11 a/b/g/n/ac | dual-band | Wi-Fi Direct | hotspot | |
Bluetooth | 4.0 | a2dp | 5.0 | a2dp | le | aptx hd | |
GPS | Yes with a-gps glonass galileo bds | ||
NFC | Yes | Yes | |
Radio | FM Radio | FM Radio | |
USB | microusb 2.0 | USB Type-C 2.0 | USB on-the-go | |
Sensors | accelerometer | proximity | compass | fingerprint ( under display | optical ) | accelerometer | gyroscope | proximity | compass | |
Battery | Li-lon 2500 mAh | removable | li-po 4000 mAh | Non-removable | |
Battery Charge | Fast charging 30w | 67% in 30 min ( advertised ) | vooc 4.0 | ||
Colors | cyan color gradations, orange, white, black | cyber metal, fantasy forest, polar sunshine | |
Network technology | gsm / hspa / lte | gsm / cdma / hspa / lte | |
5G bands | |||
Network speed | hspa 42.2/5.76 mbps lte cat4 150/50 mbps | hspa 42.2/11.5 mbps lte-a | |
GPRS | |||
EDGE | |||
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