Oppo Find X6 vs Xiaomi Redmi K40S

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

GSM 850, 900, 1800, 1900; CDMA 800
3G network

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

HSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x
4G network

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

LTE frequency band 1, 2, 3, 4, 5, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42
5G network

5G band 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78, 79 SA/NSA

5G band 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

11.5 Mbps

5.76 Mbps
LTE speed

LTE-A

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Display
Display type

AMOLED

AMOLED
Physical size

6.74 inches

6.67 inches
Resolution

1240 x 2772 pixels

1080 x 2400 pixels
Pixel density

451 ppi

395 ppi
Display colors

1073741824

16777216
Protection

Scratch resistant, 3D curved glass screen, Corning Gorilla Glass Victus 2

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5
Display features

120Hz, HDR10+, 1100 nits (HBM), 1450 nits (peak)

120Hz, HDR10+, 1300 nits (peak)

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 50 MP, f/1.8 , 24 mm, 1/1.56" , 1.0 µm, 120x digital zoom

(wide) , 48 MP, f/1.8 , 1/2" , 0.8 µm
(periscope telephoto) , 50 MP, f/2.6 , 65 mm, 1/1.56" , 1.0 µm, 2.8x optical zoom

(ultrawide) , 8 MP, 119˚
112˚ , (ultrawide) , 50 MP, f/2.0 , 15 mm, 1/2.76" , 0.64 µm

(macro) , 2 MP, f/2.4
Primary camera resolution

-

8000 x 6000 pixels
Primary camera video

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

4K@30fps, 1080p@30/60/120fps, 720p@960fps; gyro-EIS
Primary camera flash

LED flash

dual-LED dual-tone 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, contrast detection autofocus, multi-directional phase detection autofocus, RAW, HEIF

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, phase detection autofocus

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 32 MP, f/2.4 , 21 mm, 1/2.74" , 0.8 µm

(wide) , 20 MP
Selfie camera features

Face unlock, HDR, autofocus, face detection

Face unlock, HDR
Selfie camera video

1080p@30fps, gyro-EIS

1080p@30/120fps

Connectivity
WLAN

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

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

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

-

Yes
WiFi Tri-Band

Yes

-
USB

Type-C 2.0

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.3

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX HD

-
Infrared

Yes

-
NFC

Yes; NFC-SIM, HCE, eSE, eID

Yes
GPS

Yes, with dual-band A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

Yes
NavIC

-

Yes

Features
Sensors

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

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

Battery
Battery type

Li-Po

Li-Po
Battery capacity

4800 mAh

4500 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

SuperVOOC, 80W (50% in 12 min)

Quick Charge 3+, 67W (100% in 38 min)