Realme C21

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Full Specifications September 4, 2026

Realme · 2021

Realme C21

Name: Realme C21
Brand: Realme

Realme C21 Android smartphone. Announced Mar 2021. Features 6.5″ display, MT6765G Helio G35 chipset, 5000 mAh battery, 64 GB storage, 4 GB RAM.

Display 6.5"

Chipset Helio G35

RAM 3/4 GB

Storage 32GB/64GB storage, microSDXC

Camera 13 MP

Battery 5000 mAh

OS Android 10, Realme UI

Build 190g, 8.9mm thickness

Launch

Announced 2021, March 05

Status Available. Released 2021, March 05

Platform

OS Android 10, Realme UI

Chipset Mediatek MT6765G Helio G35 (12 nm)

CPU Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)

GPU PowerVR GE8320

Display

Type IPS LCD, 400 nits (typ)

Size 6.5 inches, 102.0 cm 2 (~80.8% 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 165.2 x 76.4 x 8.9 mm (6.50 x 3.01 x 0.35 in)

Weight 190 g (6.70 oz)

Build Glass front, plastic back, plastic frame

SIM Nano-SIM + Nano-SIM

Battery

Type 5000 mAh

Charging 10W wired 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 FM radio

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, 7, 8, 20, 28, 38, 40, 41 - International

Speed HSPA, LTE

Features

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

Misc

Colors Cross Black, Cross Blue

Models RMX3201

In depth

Full specifications

Announced	2021, March 05
Status	Available. Released 2021, March 05

OS	Android 10, Realme UI
Chipset	Mediatek MT6765G Helio G35 (12 nm)
CPU	Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
GPU	PowerVR GE8320

Type	IPS LCD, 400 nits (typ)
Size	6.5 inches, 102.0 cm 2 (~80.8% 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	165.2 x 76.4 x 8.9 mm (6.50 x 3.01 x 0.35 in)
Weight	190 g (6.70 oz)
Build	Glass front, plastic back, plastic frame
SIM	Nano-SIM + Nano-SIM

Type	5000 mAh
Charging	10W wired 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	FM radio
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, 7, 8, 20, 28, 38, 40, 41 - International
Speed	HSPA, LTE

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

Colors	Cross Black, Cross Blue
Models	RMX3201
Price	About 410 EUR

PhoneInsight Benchmark

29/100

Entry-level

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

Processor 16

Display 56

Camera 52.4

Battery 69.6

1.0%Popularity rank

2,394,255 hitsTotal views

Realme C21

Launch

Platform

Display

Memory

Main Camera

Selfie camera

Body

Battery

Sound

Comms

Network

Features

Misc

Full specifications

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