Oppo K11 vs Realme C51

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

GSM 850, 900, 1800, 1900
3G network

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

HSDPA 850, 900, 2100
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 28, 34, 38, 39, 40, 41

LTE frequency band 1, 3, 5, 8, 38, 40, 41 - Africa, India; 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 - Asia
5G network

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

-
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A (CA), 750 Mbps download, 211 Mbps upload

LTE-A, 150 Mbps download, 51 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front, plastic frame, plastic back

Glass front, plastic frame, plastic back
SIM

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

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

162.7 mm

167.2 mm
Width

75.5 mm

76.7 mm
Thickness

8.2 mm

8 mm
Weight

184 g

186 g
Colors

Blue, Gray

Black, Green

Display
Display type

AMOLED

IPS LCD
Physical size

6.7 inches

6.74 inches
Resolution

1080 x 2400 pixels

720 x 1600 pixels
Pixel density

393 ppi

260 ppi
Display colors

1073741824

16777216
Protection

-

Scratch resistant, 2.5D curved glass screen
Display features

120Hz, HDR10+, 500 nits (typical), 1100 nits (peak)

90Hz, 560 nits (peak)

Main camera
Camera type

Triple

Dual
Main camera

(wide) , 50 MP, f/1.8 , 84˚ , 24 mm, 1/1.56" , 1.0 µm

(wide) , 50 MP, f/1.8 , 27 mm, 1/2.76" , 0.64 µm
(ultrawide) , 8 MP, f/2.2 , 1/4" , 1.12 µm

(depth) , 0.08 MP, f/3.0
(macro) , 2 MP, f/2.4
Primary camera resolution

8120 x 6180 pixels

8120 x 6180 pixels
Primary camera video

4K@30fps, 1080p@30/60/120fps, gyro-EIS

1080p@30fps
Primary camera flash

LED flash

LED flash
Camera features

Autofocus, continuous shooting, digital 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

Autofocus, digital zoom, digital 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) , 16 MP, f/2.4 , 24 mm, 1.0 µm

(wide) , 5 MP, f/1.8 , 28 mm, 1.12 µm, 1/5"
Selfie camera resolution

4608 x 3456 pixels

3264 x 2448 pixels
Selfie camera features

-

Face unlock, face detection
Selfie camera video

1080p@30fps, gyro-EIS

720p@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

-
WLAN WiFi Direct

Yes

-
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C 2.0
USB On-The-Go

Yes

-
Bluetooth

v5.2

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX HD

-
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

-
QZSS

Yes

-

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, proximity

Accelerometer, compass, fingerprint, proximity

Battery
Battery type

Li-Po

Li-Po
Battery capacity

5000 mAh

5000 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

SuperVOOC, 100W (100% in 26 min)

SuperVOOC, 33W (50% in 28 min)