Realme C21

Launch Date : 8 April, 2021
Realme C21
  • 32GB, 64GB Storage / 3GB, 4GB RAM
  • 13MP + 2MP + 2MP Triple lens Primary Camera, 5MP Front Camera
  • 6.5 inches 720 x 1600 pixels Display
  • MediaTek Helio G35 (12 nm), Octa Core
  • Non-Removable Li-Ion 5000 mAh battery

Realme C21: Specs Score

  • 3.3
  • 3.3
  • 3.5
  • 3.5
    Value for Money
  • 3.3
Rated at 67.25%
  • Display: 3.5/5
    Large 720p display
  • Camera : 3.3/5
    Basic triple camera setup
  • Processor : 3.3/5
    Powered by an entry-level processor
  • Battery : 3.3/5
    5000 mAh battery with regular charging
  • RAM : 3/5
    based model just offers 3GB RAM
  • Storage : 3/5
    32GB storage with dedicated microSD card slot
  • 4G/5G : 4/5
    No 5G support


Realme C21: Price

Realme C21: Review

  • Geometric art design
  • 5,000 mAh battery
  • Supports reverse charging
  • 720p display
  • Basic 13MP camera setup

Realme C21 Design

Realme has expanded its budget C series with the new Realme C21. The budget smartphone flaunts a geometric art design, making it quite unique in this segment. It also features a 6.5-inch HD+ display with 720p resolution. The display also comes with Corning Gorilla Glass 3 protection and a waterdrop notch that houses the selfie camera.


Realme C21 Hardware Performance

Going under the hood, the Realme C21 draws power from the MediaTek Helio G35 paired with up to 4GB RAM and 64GB default storage. One can further expand the memory using a microSD card. Also, the chipset is coupled with the PowerVR GE8320 GPU, making it quite capable with graphic-centric apps. Overall, the Helio G35 chipset is capable of handling your routine smartphone tasks without any glitches.


Realme C21 Camera Performance

Coming to the camera department, the Realme C21 packs a triple-camera setup. Here, the sensors include includes a 13MP primary sensor, a 2MP macro lens, and a 2MP lens. For selfies and videos, there is a 5MP front camera. The camera on the Realme C21 is quite similar to most other smartphones in this segment and there’s nothing new to highlight with the device.


Realme C21 Price-To-Specs Ratio

The Realme C21 falls in the sub-Rs. 10K segment, making it a budget device. The Realme C21 will cost Rs. 7,999 for the 3GB RAM + 32GB storage option and Rs. 8,999 for the 4GB RAM + 64GB storage model. The device is up against smartphones like the Poco C3, Samsung Galaxy M02, Redmi 9A, and so on. With nearly identical specs, the Realme C21 has some tough competition in India.


Realme C21 Important Features/Highlights

There are a couple of factors that make Realme C21 stand out in the crowd. For one, the device packs a 5,000 mAh battery that claims to last a day on a single charge. Also, the battery supports reverse charging, making it even better. The Realme C21 runs Android 10 OS based on RealmeUI custom skin on top.


Realme C21 Verdict

The Realme C21 makes a sweeping entry to the Indian market alongside the Realme C20 and the Realme C25. The device packs several identical features, the Realme C21 blends with several smartphones in this segment. If budget permits, one could get the Realme C25, which offers a few upgraded features for a couple more bucks.

Realme C21: Specifications

Operating System Android OS,10
Custom UI realme UI 1.0
Device type Phablet
Sim Dual Sim
Colours Cross Black, Cross Blue
Status Available in India
Global Release Date March, 2021
Indian Release Date 8 April, 2021
Dimensions 165.2 x 76.4 x 8.9 mm
Weight 190 g
Body Material Glass front, plastic back, plastic frame
Screen size 6.5 inches
Technology IPS LCD
Screen resolution 720 x 1600 pixels, 20:9 ratio (~270 ppi density)
Touchscreen Capacitive Touchscreen
Form Factor Touch
Chipset MediaTek Helio G35 (12 nm)
CPU Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
GPU PowerVR GE8320
Internal Storage 32 GB Storage
External Storage Up to 256 GB
Card Slot microSD Card
Phonebook Unlimited
Messaging SMS, MMS, Email, Push Email
Call Records Unlimited
Primary camera 13 MP (f/2.2, wide) + 2 MP (f/2.4, macro) + 2 MP (f/2.4, depth) Triple Camera with LED Flash
Front Camera 5 MP (f/2.2) Camera
Video Recording 1080p@30fps
Camera Features HDR, AR sticker, Slow Motion, Portrait Mode, Beauty Mode, AI Camera
Audio Player MP3, eAAC+, WMA, WAV, FLAC
Video Player MP4, H.263, H.264, WMV
Games Yes
FM Radio Yes
Speakers Yes
Audio Jack 3.5mm Audio Jack
Type Non-Removable Li-Ion 5000 mAh battery
Edge Yes
WLAN Wi-Fi 802.11 b/g/n, hotspot
Bluetooth v5.0, A2DP, LE
USB microUSB v2.0, USB OTG
GPS Facility with A-GPS
Browser HTML5
2G GSM 850 / 900 / 1800 / 1900 MHz
3G HSDPA 850 / 900 / 1900 / 2100 MHz
4G Dual VoLTE
Sensors Fingerprint (rear-mounted), Proximity sensor, Accelerometer, Compass
Other Features Face unlock, Reverse charging

Realme C21: FaQs

What is the screen size of the Realme C21?

The smartphone has a 6.5-inch HD+ display with 720 x 1600 pixels resolution.

How’s the back camera of the Realme C21?

The phone has a triple-camera module with a 13MP main sensor.

What colors are available for the Realme C21?

The phone is selling in India in Cross Black and Cross Blue color options.

What is the integrated processor in the Realme C21?

The smartphone is based on the MediaTek Helio G35 processor.

Is there a fingerprint reader on the Realme C21?

Yes, the smartphone features a rear-mounted fingerprint sensor along with face unlock.

Should I buy the Realme C21?

Yes, if you are looking for a phone under Rs. 8,000 for normal day-to-day usage, then can consider the Realme C21.

What is the Android version on the Realme C21?

It ships with Android 10-based Realme UI custom skin.

How many RAM variants are there in the Realme C21?

There are two RAM variants including 3GB and 4GB.

Is there is a microSD card slot on the Realme C21?

Yes, the storage of the smartphone is expandable up to 256GB via a microSD card slot.

Does the Realme C21 support 5G?

No, the smartphone does not support 5G network.

How do we rate a Device?

Rating a smartphone is a tedious process and a lot of parameters have to be considered before judging the overall performance of the device such as display, camera, processor, RAM, storage, battery, and the pricing.

So, here are how these specs will affect the real-life usage of a device and why how we meticulously consider each of these points to rate a smartphone.


Cameras have evolved a lot over the last few years and multi-camera setup is a new norm. We consider various parameters like MP count, aperture size, pixel size, image stabilization to rate a camera system of a smartphone out of 5. Any device that scores more than 3.5 can take good photos and videos and if a phone scores over 4, then it will be one of the best camera smartphones in the market.


Though battery seems like an underrated feature and we look at the battery capacity, fast charging supporting technology, and even the wireless charging capability is also taken into consideration to rate smartphone's battery capability.


The display is the face of a smartphone. And there are a lot of parameters like the panel technology (IPS LCD, OLED, TFT) and other parameters also taken into consideration like the resolution, pixel density, and refresh rate.

Value for Money

A smartphone could have great specs, but if it is not priced well then you might not get the best value-for-money. So, we compare a smartphone with the contemporaries to rate the value-for-money of a device out of 5.


This aspect is decided on various sub specifics, such as availability of microSD card slot, the amount of RAM the device offers, processor capability, and the network support. This parameter has more weightage when compared to other departments.

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