Asus ROG Phone 7 Ultimate vs Realme C21

Asus ROG Phone 7 Ultimate

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

HSDPA 850, 900, 2100
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 32, 34, 38, 39, 40, 41, 42, 43, 48, 66 - global version; 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 29, 30, 32, 34, 39, 40, 41, 42, 43, 48, 66, 71 - USA; 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42, 48 - China

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

5G band 1, 2, 3, 5, 7, 8, 12, 18, 20, 25, 26, 28, 38, 40, 41, 48, 66, 77, 78, 79 SA/NSA/Sub6 - global version; 1, 2, 3, 5, 7, 8, 12, 18, 20, 25, 26, 29, 30, 38, 40, 41, 48, 66, 71, 77, 78, 79 SA/NSA/Sub6 - USA

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HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

11.5 Mbps

5.76 Mbps
LTE speed

LTE-A (7CA), Cat20, 2000 Mbps download, 211 Mbps upload

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

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front (Gorilla Glass Victus), glass back (Gorilla Glass 3), aluminum frame

Glass front, plastic back, plastic frame
SIM

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

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

173 mm

165.2 mm
Width

77 mm

76.4 mm
Thickness

10.3 mm

8.9 mm
Weight

239 g

190 g
Waterproof

IP54

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Dust proof

IP54

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Build features

Built-in motorized cooling air vent (AeroActive Portal), pressure sensitive zones (Gaming triggers), 2" OLED display (on the back)

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Colors

White

Black, Blue

Display
Display type

AMOLED

IPS LCD
Physical size

6.78 inches

6.5 inches
Resolution

1080 x 2448 pixels

720 x 1600 pixels
Pixel density

395 ppi

270 ppi
Display colors

1073741824

16777216
Protection

Scratch resistant, Corning Gorilla Glass Victus

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

165Hz, HDR10+, 1000 nits (HBM), 1500 nits (peak)

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Main camera
Camera type

Triple

Triple
Main camera

(wide) , 50 MP, f/1.9 , 24 mm, 1/1.56" , 1.0 µm

(wide) , 13 MP, f/2.2 , 26 mm, 1/3.06" , 1.12 µm
(ultrawide) , 13 MP, f/2.2 , 120˚ , 13 mm

(macro) , 2 MP, f/2.4
(macro) , 5 MP, f/2.2

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

8190 x 6120 pixels

2560 x 1920 pixels
Primary camera video

8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, 720p@480fps; gyro-EIS, HDR10+

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, RAW, Pro Video mode

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/2.5 , 29 mm, 1/3.2" , 0.7 µm

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

-

2560 x 1920 pixels
Selfie camera features

Face unlock, face detection, 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, 802.11be

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

Yes

Yes
WLAN WiFi Direct

Yes

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WiFi Tri-Band

Yes

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USB

USB Type-C 3.1 (side), DisplayPort 1.4,USB Type-C 2.0 (bottom)

microUSB 2.0
USB connector

Accessory connector

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USB On-The-Go

Yes

Yes
Bluetooth

v5.3

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX Adaptive

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NFC

Yes

No
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

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BDS

Yes

Yes
QZSS

Yes

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NavIC

Yes

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