Oppo Find X3 vs Oukitel K12

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

GSM 850, 900, 1800, 1900
3G network

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x

W-CDMA 850, 900, 1700, 1900, 2100
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42, 66 - China

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 40(2300)
5G network

5G band 1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 40, 41, 66, 77, 78, 79 - China

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HSDPA speed

42.2 Mbps

-
HSUPA speed

5.76 Mbps

-
LTE speed

LTE-A

LTE Cat 6, 301.5 Mbps download, 51.0 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front (Gorilla Glass), glass back, aluminum frame

Aluminium alloy, plastic
SIM

Dual SIM (Nano-SIM, eSIM, dual stand-by)

Dual SIM (Nano-SIM/microSD)
Height

163.6 mm

163.5 mm
Width

74 mm

75.4 mm
Thickness

8.3 mm

14.5 mm
Weight

193 g

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Waterproof

IP68, 1.5m for 30 mins

-
Dust proof

IP68

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Colors

Black, Blue, White

Black

Display
Display type

LTPO AMOLED

IPS capacitive touchscreen
Physical size

6.7 inches

6.3 inches
Resolution

1440 x 3216 pixels

1080 x 2340 pixels
Pixel density

525 ppi

409 ppi
Display colors

1073741824

16777216
Protection

Scratch resistant, 3D curved glass screen, Corning Gorilla Glass 5

LTPS (Low Temperature PolySilicon)
Multitouch

-

Yes
Display features

120Hz, HDR10+, BT.2020, 500 nits (typ), 1300 nits (peak)

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Main camera
Camera type

Quad

Dual
Main camera

(wide) , 50 MP, f/1.8 , 25 mm, 1/1.56" , 1.0 µm, 20x digital zoom , 5x

16 MP, 0.26" , 1.132 µm
(telephoto) , 13 MP, f/2.4 , 52 mm, 2x optical zoom

2 MP
110˚ , (ultrawide) , 50 MP, f/2.2 , 1/1.56" , 1.0 µm
(macro) , 3 MP, f/3.0
Primary camera resolution

8192 x 6144 pixels

4608 x 3456 pixels
Primary camera video

4K@30/60fps, 1080p@30/60/240fps; gyro-EIS; HDR, 10-bit video

1080p@30fps
Primary camera flash

LED flash

dual LED flash
Camera features

Autofocus, continuous autofocus, continuous shooting, digital zoom, optical zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus, contrast detection autofocus, RAW, HEIF

Autofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection

Selfie camera
Selfie camera type

Single

-
Selfie camera

(wide) , 32 MP, f/2.4 , 26 mm, 1/2.8" , 0.8 µm

8 MP, 0.18" , 1.124 µm
Selfie camera resolution

4896 x 6528 pixels

3264 x 2448 pixels
Selfie camera features

Face unlock, HDR, panorama

-
Selfie camera video

1080p@30fps

1080p@30fps

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 3.1

Type-C reversible connector
USB On-The-Go

Yes

Yes
Bluetooth

v5.2

v4.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

-
Bluetooth AptX

aptX HD

-
NFC

Yes (dual antenna)

-
GPS

Yes, with dual-band A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

-
BDS

Yes

-
QZSS

Yes

-

Features
Sensors

Accelerometer, color spectrum, compass, fingerprint, gyroscope, proximity

Accelerometer, compass, fingerprint, gyroscope, proximity, light