Oppo Find X5 vs Realme C21

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

HSDPA 850, 900, 2100
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 34, 38, 39, 40, 41, 42, 66 - global version; 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 66 - China

LTE frequency band 1, 3, 5, 7, 8, 20, 28, 38, 40, 41
5G network

5G band 1, 3, 5, 7, 8, 12, 13, 18, 20, 26, 28, 38, 40, 41, 66, 77, 78 SA/NSA - global version; 1, 2, 3, 5, 8, 20, 28, 38, 41, 66, 77, 78, 79 SA/NSA - China

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HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A

LTE, Cat4, 150 Mbps download, 51 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

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

Glass front, plastic back, plastic frame
SIM

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

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

160.3 mm

165.2 mm
Width

72.6 mm

76.4 mm
Thickness

8.7 mm

8.9 mm
Weight

196 g

190 g
Waterproof

IP68

-
Dust proof

IP68

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Colors

Black, Purple, White

Black, Blue

Display
Display type

AMOLED

IPS LCD
Physical size

6.55 inches

6.5 inches
Resolution

1080 x 2400 pixels

720 x 1600 pixels
Pixel density

402 ppi

270 ppi
Display colors

1073741824

16777216
Protection

Scratch resistant, Corning Gorilla Glass 5

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 3
Display features

120Hz, HDR10+, 500 nits (typ), 800 nits (HBM), 1000 nits (peak)

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OS
OS

Android 12, ColorOS 12.1

Android 10, Realme UI 1.0 / Android 11, Realme UI 2.0

Main camera
Camera type

Triple

Triple
Main camera

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

(wide) , 13 MP, f/2.2 , 26 mm, 1/3.06" , 1.12 µm
(telephoto) , 13 MP, f/2.4 , 52 mm, 1/3.4" , 2x optical zoom

(macro) , 2 MP, f/2.4
110˚ , (ultrawide) , 50 MP, f/2.2 , 15 mm, 1/1.56" , 1.0 µm

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

8192 x 6144 pixels

2560 x 1920 pixels
Primary camera video

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

1080p@30fps
Primary camera flash

LED flash

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, 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) , 32 MP, f/2.4 , 25 mm, 1/2.74" , 0.8 µm

(wide) , 5 MP, f/2.2 , 1/5.0" , 1.12 µm
Selfie camera resolution

6560 x 4928 pixels

2560 x 1920 pixels
Selfie camera features

Face unlock, HDR, panorama

Face unlock, HDR, panorama
Selfie camera video

1080p@30fps, gyro-EIS

1080p@30fps

Connectivity
WLAN

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

Wi-Fi 802.11b, 802.11g, 802.11n
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

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WLAN WiFi Dual Band

Yes

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USB

Type-C 3.1

microUSB 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.2

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX HD

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NFC

Yes

No
GPS

Yes, with dual-band A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

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BDS

Yes

Yes
QZSS

Yes

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