80% SPEC SCORE
$119
The Realme C21Y comes with Android 10, ensuring enhanced functionality and smooth multitasking. It features a big 6.5-inches HD+ display, perfect for both work and entertainment. thanks to its 60Hz refresh rate With a Decent 5000 mAh battery life, you can stay powered throughout the day without frequent charging. Price starting at $119 this device is Wallet-friendly and it’s offers incredible value, blending performance, style, and affordability.
Realme C21Y Key Features
Display
6.5 inches (720x1600 pixels) HD
60Hz Refresh rate
Camera
13+2+2 MP (Dual Camera)
5 MP Selfie 1080P Video
Hardware
Unisoc T610 (12 nm)
OS
Android 10
Ram & Storage
3GB + 32GB
4GB + 64GB
Battery
5000mAh
Data Updated on: 01 Sep, 2026
Realme C21Y Pros & Cons
By Amit Dubey | on 13 September 2026
5.2
/ 10
TSI Score
Design
Display
Performance
Battery
Camera
Software
Sound
Usage
Pros
5000mAh battery at a very low entry price.
Large 6.5-inch screen for the money.
Unisoc T610 is acceptable for basic Android use.
Cons
720p resolution on a 6.5-inch panel.
Only 3GB RAM and 32GB storage in the listed variant.
60Hz display only.
Not a phone for demanding games or heavy multitasking.
Realme C21Y Price and Full Specifications
Launch Date
| Announced Date | 21 Jun, 2021 |
| Released Date | 02 Jul, 2021 |
| Status | Available |
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 |
Display
Similar Display
| Screen Size | 6.5 inches, 102 cm² (~81.6% screen-to-body ratio) |
| Display Type | IPS LCD |
| Resolution | 720 × 1600 pixels (HD) |
| Aspect Ratio | 20:9 |
| PPI | 270 ppi |
| Refresh Rate | 60Hz |
| Brightness | 400 nits (typ) |
Performance
Similar Performance
| Processor (SoC) | Unisoc T610 (12 nm) |
| Fabrication process | 12nm |
| CPU | Octa-core: 2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55 |
| CPU cores | 8 |
| GPU | Mali G52 MP2 |
Storage
| Memory | 3GB + 32GB, 4GB + 64GB |
| Storage type | eMMC 5.1 |
| Memory Card Slot | microSDXC (dedicated slot) |
Camera
Similar Camera
REAR CAMERA | |
| Type | Dual camera |
| Primary | 13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, PDAF |
| Secondary | 2 MP, f/2.4, (macro) |
| Tertiary | 2 MP, f/2.4, (depth) |
| Features | LED flash, HDR, panorama |
| Video Recording | 1080p @30fpsfps |
FRONT CAMERA | |
| Type | Single camera |
| Primary | 5 MP, f/2.2, (wide), 1.12µm |
| Features | HDR, panorama |
| Video Recording | 1080p @30fpsfps |
Battery
Similar Battery
| Battery Capacity | 5000mAh |
| Battery Removable | No |
| Charging |
Software & OS
| Operating System | Android 10 |
Design
| Dimensions | 164.5 x 76 x 9.1 mm (2.99 x 0.36 in) |
| Weight | 200g (7.05 oz) |
| Color Options | Cross Black, Cross Blue |
| Build | Glass front, plastic back, plastic frame |
| Sim Card Types | Dual SIM (Nano-SIM, dual stand-by) |
Connectivity
| WLAN | Wi-Fi 802.11 b/g/n |
| Bluetooth | 5.0, A2DP, LE |
| Positioning | GPS, GLONASS, BDS |
| NFC | No |
| Radio | No |
| Infrared-port | No |
| USB Version | microUSB 2.0, OTG |
Sound
| Loudspeaker | Yes |
| Sound Jack | 3.5 |
Sensors & Features
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity, compass |
Additional Info
| Models | RMX3261, RMX3263 |
| Pricing | $119 / R$ 607.53 / ₹7,790 / £111.7 / €130 / C$164.91 |
What's in the Box
| Realme C21Y | Handset, USB-C cable, SIM ejector tool, and quick start guide |
Disclaimer: Information here may not be 100% accurate; please verify specs and prices on the retailer's website before buying. This page contains affiliate links. We may earn a commission if you make a purchase through them, at no extra cost to you. Thanks for your support!
Realme C21Y Comparisons
Realme C21Y
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80% SPEC SCORE
6.5 inches (16.51 cm)
60Hz Display
13+2+2 MP (Dual)
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5000 mAh
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Frequently Asked Questions
How to update Realme C21Y?
You can update the Realme C21Y by opening Settings, going to Software Update, and installing any available system update shown on the phone. Connect to Wi-Fi, keep the battery charged, and back up important data before starting because Android updates can be large and may take several minutes. If no update appears, the device may already be on the latest supported software for your region, so avoid installing unofficial firmware unless you know the exact Realme C21Y model variant.
What is the lifespan of a Realme C21Y battery?
The Realme C21Y battery should typically remain usable for about 2 to 3 years before noticeable battery-health decline, depending on charging habits, heat, and daily usage. The phone has a 5000mAh typical battery capacity, which is large for an entry-level Android device and can support long everyday use when new. Battery ageing is normal for lithium-ion cells, so avoiding excessive heat and frequent full drain cycles can help the Realme C21Y maintain better battery life over time.
Is the Realme C21Y waterproof?
The Realme C21Y is not advertised as waterproof and does not have a verified IP water-resistance rating in the provided specifications. It should be protected from rain, splashes, sinks, and pool water because liquid damage can affect the display, charging port, speaker, and internal components. Using a protective case may help with minor accidents, but it does not make the Realme C21Y water-resistant or safe for immersion.
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