Realme C21Y

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Full Specifications September 4, 2026

Realme · 2021

Realme C21Y

Name: Realme C21Y
Brand: Realme

Realme C21Y Android smartphone. Announced Jun 2021. Features 6.5″ display, Unisoc T610 chipset, 5000 mAh battery, 64 GB storage, 4 GB RAM.

Display 6.5"

Chipset Unisoc T610

RAM 3/4 GB

Storage 32GB/64GB storage, microSDXC

Camera 13 MP

Battery 5000 mAh

OS Android 10/ Android 11

Build 200g, 9.1mm thickness

Launch

Announced 2021, June 21

Status Available. Released 2021, July 02

Platform

OS Android 10/ Android 11

Chipset Unisoc T610 (12 nm)

CPU Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)

GPU Mali-G52 MP2

Display

Type IPS LCD, 400 nits (typ)

Size 6.5 inches, 102.0 cm 2 (~81.6% screen-to-body ratio)

Resolution 720 x 1600 pixels, 20:9 ratio (~270 ppi density)

Memory

Card slot microSDXC (dedicated slot)

Internal 32GB 3GB RAM, 64GB 4GB RAM

memoryother eMMC 5.1

Main Camera

Dual 13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, PDAF 2 MP (macro) Auxiliary lens

Features LED flash, HDR, panorama

Video 1080p@30fps

Selfie camera

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

Features HDR, panorama

Video 1080p@30fps

Body

Dimensions 164.5 x 76 x 9.1 mm (6.48 x 2.99 x 0.36 in)

Weight 200 g (7.05 oz)

Build Glass front, plastic back, plastic frame

SIM Nano-SIM + Nano-SIM

Battery

Type 5000 mAh

Charging Reverse wired

Sound

Loudspeaker Yes

3.5mm jack Yes

Comms

WLAN Wi-Fi 802.11 b/g/n

Bluetooth 5.0, A2DP, LE

Positioning GPS, GLONASS, BDS

NFC No

Radio Unspecified

USB microUSB 2.0, OTG

Network

Technology GSM / HSPA / LTE

2G bands GSM 850 / 900 / 1800 / 1900

3G bands HSDPA 850 / 900 / 2100

4G bands 1, 3, 5, 8, 38, 40, 41

Speed HSPA, LTE

Features

Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass

Misc

Colors Cross Black, Cross Blue

Models RMX3261, RMX3263

In depth

Full specifications

Announced	2021, June 21
Status	Available. Released 2021, July 02

OS	Android 10/ Android 11
Chipset	Unisoc T610 (12 nm)
CPU	Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU	Mali-G52 MP2

Type	IPS LCD, 400 nits (typ)
Size	6.5 inches, 102.0 cm 2 (~81.6% screen-to-body ratio)
Resolution	720 x 1600 pixels, 20:9 ratio (~270 ppi density)

Card slot	microSDXC (dedicated slot)
Internal	32GB 3GB RAM, 64GB 4GB RAM
memoryother	eMMC 5.1

Dual	13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, PDAF 2 MP (macro) Auxiliary lens
Features	LED flash, HDR, panorama
Video	1080p@30fps

Single	5 MP, f/2.2, (wide), 1/5.0", 1.12µm
Features	HDR, panorama
Video	1080p@30fps

Dimensions	164.5 x 76 x 9.1 mm (6.48 x 2.99 x 0.36 in)
Weight	200 g (7.05 oz)
Build	Glass front, plastic back, plastic frame
SIM	Nano-SIM + Nano-SIM

Type	5000 mAh
Charging	Reverse wired

Loudspeaker	Yes
3.5mm jack	Yes

WLAN	Wi-Fi 802.11 b/g/n
Bluetooth	5.0, A2DP, LE
Positioning	GPS, GLONASS, BDS
NFC	No
Radio	Unspecified
USB	microUSB 2.0, OTG

Technology	GSM / HSPA / LTE
2G bands	GSM 850 / 900 / 1800 / 1900
3G bands	HSDPA 850 / 900 / 2100
4G bands	1, 3, 5, 8, 38, 40, 41
Speed	HSPA, LTE

Sensors	Fingerprint (rear-mounted), accelerometer, proximity, compass

Colors	Cross Black, Cross Blue
Models	RMX3261, RMX3263
Price	About 130 EUR

PhoneInsight Benchmark

34.2/100

Entry-level

A specs-derived composite score, not a lab benchmark -- useful for ranking and comparison.

Processor 24

Display 56

Camera 52.4

Battery 65.6

1.5%Popularity rank

3,059,041 hitsTotal views

Realme C21Y

Launch

Platform

Display

Memory

Main Camera

Selfie camera

Body

Battery

Sound

Comms

Network

Features

Misc

Full specifications

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