Realme C21Y vs Sony Xperia 1 IV

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 2100

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100
4G network

LTE frequency band 1, 3, 5, 8, 38, 40, 41

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 19, 20, 25, 26, 28, 29, 32, 34, 38, 39, 40, 41, 46, 66 - Europe; 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 19, 20, 25, 26, 28, 29, 32, 34, 38, 39, 40, 41, 46, 48, 66, 71 - USA; 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 19, 20, 25, 26, 28, 29, 34, 38, 39, 40, 41, 46, 66 - Asia
5G network

-

5G band 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA/Sub6 - Europe; 1, 2, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 71, 77, 78, 260, 261 SA/NSA/Sub6/mmWave - USA; 1, 3, 5, 7, 8, 28, 38, 40, 41, 77, 78, 79 SA/NSA/Sub6 - Asia
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE, 150 Mbps download, 51 Mbps upload

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front, plastic back, plastic frame

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

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

Single SIM (Nano-SIM or eSIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)
Height

164.5 mm

165 mm
Width

76 mm

71 mm
Thickness

9.1 mm

8.2 mm
Weight

200 g

185 g
Waterproof

-

IP65/IP68 (1.5m and 30 mins)
Dust proof

-

IP65/IP68
Colors

Black, Blue

Black, Violet, White

Main camera
Camera type

Dual

Quad
Main camera

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

(wide) , 12 MP, f/1.7 , 24 mm, 1/1.7" , 1.8 µm
(macro) , 2 MP, f/2.4

(telephoto) , 12 MP, f/2.3, f/2.8 , 85/125 mm, 1/3.5" , 3.5x-5.2 optical zoom
(depth) , 2 MP, f/2.4

(ultrawide) , 12 MP, f/2.2 , 124˚ , 16 mm, 1/2.5"
TOF 3D
Primary camera resolution

-

4032 x 3024 pixels
Primary camera video

1080p@30fps

4K@24/25/30/60/120fps HDR, 1080p@30/60/120/240fps; 5-axis gyro-EIS, OIS
Primary camera optics

-

Zeiss optics, Zeiss T* lens coating
Primary camera flash

LED flash

LED flash
Camera features

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

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, phase detection autofocus, Real-time eye AF, Real-time object tracking, cinematography pro, 5-axis stabilization, videography pro, live streaming

Selfie camera
Selfie camera type

Single

-
Selfie camera

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

(wide) , 12 MP, f/2.0 , 1/4" , 24 mm
Selfie camera resolution

-

4032 x 3024 pixels
Selfie camera features

-

Face unlock, HDR, live streaming
Selfie camera video

1080p@30fps

4K@30fps, 1080p@30fps, 5-axis gyro-EIS

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n

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
WLAN WiFi Dual Band

-

Yes
USB

microUSB 2.0

Type-C 3.2
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX HD, aptX Adaptive
NFC

No

Yes
GPS

Yes, with A-GPS

Yes, with dual-band A-GPS
GLONASS

Yes

Yes
GALILEO

-

Yes
BDS

Yes

Yes
QZSS

-

Yes