Oppo Reno 8 Z vs Realme C21

Oppo Reno 8 Z

Realme C21

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100

HSDPA 850, 900, 2100
4G network

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

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

5G band 1, 3, 5, 7, 8, 20, 28, 38, 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, Cat4, 150 Mbps download, 51 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front, plastic frame, glass back

Glass front, plastic back, plastic frame
SIM

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

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

159.9 mm

165.2 mm
Width

73.2 mm

76.4 mm
Thickness

7.7 mm

8.9 mm
Weight

181 g

190 g
Build features

RGB ring lights around the cameras (notifications, charging progress)

-
Colors

Black, Gold

Black, Blue

Display
Display type

AMOLED

IPS LCD
Physical size

6.43 inches

6.5 inches
Resolution

1080 x 2400 pixels

720 x 1600 pixels
Pixel density

409 ppi

270 ppi
Display colors

16777216

16777216
Protection

Schott Xensation Up

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

430 nits (typ), 600 nits (HBM)

-

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) , 64 MP, f/1.7 , 79˚ , 26 mm, 1/2" , 0.7 µm

(wide) , 13 MP, f/2.2 , 26 mm, 1/3.06" , 1.12 µm
(macro) , 2 MP, f/2.4 , 1.75 µm

(macro) , 2 MP, f/2.4
(depth) , 2 MP, f/2.4 , 1.75 µm

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

9280 x 6920 pixels

2560 x 1920 pixels
Primary camera video

1080p@30fps, 720p@30/120fps, EIS

1080p@30fps
Primary camera flash

LED flash

LED flash
Camera features

Autofocus, continuous autofocus, continuous shooting, digital zoom, digital 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

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 , 27 mm, 1.0 µm

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

4608 x 3456 pixels

2560 x 1920 pixels
Selfie camera features

Face unlock, HDR

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 802.11b, 802.11g, 802.11n
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

-
WLAN WiFi Dual Band

Yes

-
USB

Type-C 2.0

microUSB 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.1

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX HD

-
NFC

Yes

No
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

-
BDS

Yes

Yes
QZSS

Yes

-

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, proximity

Accelerometer, compass, fingerprint, proximity

Battery
Battery type

Li-Po

Li-Po
Battery capacity

4500 mAh

5000 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

SuperVOOC 2.0, VOOC 3.0, 33W (31% in 15 min, 100% in 63 min)

Yes
Reverse charging

Yes

Yes

Oppo Reno 8 Z comparisons