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Triple camera. Real quality.

phone features

5000mAh Massive Battery*

13MP AI Triple Camera

6.5" Mini-drop Fullscreen

Super Power Saving Mode

TÜV Rheinland Smartphone
High Reliability Certification

Instant Fingerprint Unlock

3-Card Slot

Geometric Art Design

5000mAh Massive Battery
More power. More life.

This super long-lasting battery empowers you to face the challenges of life head-on. Power your day for longer with this 5000mAh massive battery.

Supports Reverse Charging*

Super Power Saving Mode

Don't panic if your phone starts running low. You can still use APPs for a while on Super Power Saving Mode.

13MP AI Triple Camera
See more. Feel more.

A powerful 13MP AI Triple Camera captures the details of our brilliant world. The primary 13MP camera enables sharper and brighter photos, while the 2MP Macro lens is perfect for detailed close-ups. Landscapes, portraits, macro shots...the possibilities are endless.


Primary Camera


2MP B&W Lens


Macro Lens






Video Recording


Video Recording

Super Nightscape

Now, the stars and city lights are just a single touch away. Turn on Super Nightscape mode to capture the beauty of the night, even in low-light environments.

Chroma Boost

AI empowered Chroma Boost produces perfectly balanced pictures with more vibrant colors.

6.5" Mini-drop Fullscreen
More expansive views.

The large HD+ display is just one more reason to love this phone. Whether you’re gaming or watching videos, the Mini-Drop Fullscreen display brings you a more immersive experience.


6.5 inch


Aspect Ratio


Screen-to-body Ratio*

The first smartphone passed
TÜV Rheinland
Smartphone High Reliability Certification.

Every realme mobile phone goes through rigorous quality tests. This time, realme make a further Step. As the first in the industry passed TÜV Rheinland Smartphone Quality Certification, realme C21 makes users freely enjoy long-lasting smart life.

3 Years

The test conditions are based on the three-year life cycle of smartphone.


Daily Use Test Scenarios


Components Reliability Test Scenarios


Extreme Environment Test Scenarios

Instant Fingerprint Unlock
Convenient and safe.

The reliable fingerprint sensor unlocks your phone quickly and safely, whenever you need it.

3-Card Slot Expand your possibilities.

Featuring dual SIM slots and a MicroSD slot for expandable storage of up to 256GB.


Cross Blue

Cross Black

The bold cross-hatch design is fashionable and functional, making a strong visual impact while protecting against fingerprint smudges. Choose between Cross Blue and Cross Black.


1. 5000mAh is the typical value of realme C21Y battery capacity.

2. The Reverse Charging feature of the realme C21Y requires turning on the OTG function for providing charging to other phones via the OTG cable.

3. The data of battery life in Super Saving Mode is from the realme lab. The actual results may vary slightly depending on the environment.

4. The screen ratio data comes from the test results of realme lab.

5. Product pictures are for reference only, please refer to the actual products. Certain product specifications and descriptions may change due to reasons like changes in suppliers.