Realme C21Y


Realme has added another entry-level smartphones to its C-series dubbed Realme C21Y. The phone has just made its global debut in Vietnam and is expected to be available in other regions soon.

The smartphone is built around a 6.5-inch HD+ LCD display that offers a screen resolution of 1600 × 720 pixels and 400nits peak brightness. It features a waterdrop notch that houses a front selfie shooter.

Under the hood, the handset is powered by a Unisoc T610 octa-core processor which is built using a 12nm fabrication process. The graphics on the handset are handled by an integrated Mali G52 GPU.

The device comes packed with 4GB LPDDRX RAM and 64GB internal storage. In the camera department, there’s a triple-camera setup on the back that includes a 13-megapixel primary sensor, a 2-megapixel macro lens, and a 2-megapixel monochrome lens.

On the front side, the smartphone features a 5-megapixel snapper for taking selfies and video calling. Connectivity options include 4G, Dual Sim, Wi-Fi 802.11 b/g/n, Bluetooth 5.0, GPS, AGPS, Beidou, and Glonass.

Realme C21Y

There’s also a rear-mounted fingerprint sensor. It runs the Android 10 operating system out-of-the-box which is now a bit old given that Android 12 has been officially announced. It would have been good if the company opted for the Android 11 OS. The phone has a Realme UI on top and is powered by a 5,000mAh battery.

Realme C21Y

Realme C21Y Specifications

Network Properties

  • 2G bands: GSM 850 / 900 / 1800 / 1900 – SIM 1 & SIM 2
  • 3G bands: HSDPA 850 / 900 / 2100
  • 4G bands: 1, 3, 5, 8, 38, 40, 41
  • Speed: HSPA 42.2/5.76 Mbps, LTE


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


  • 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
  • Colors: Cross Black, Cross Blue
  • SIM: Dual SIM (Nano-SIM, dual stand-by)


  • Type: IPS LCD, 400 nits (typ)
  • Size: 6.5 inches, 102.0 cm2 (~81.6% screen-to-body ratio)
  • Resolution: 720 x 1600 pixels, 20:9 ratio (~270 ppi density)

Operating System

  • Android 10, Realme UI


  • Chipset: Unisoc T610 (12 nm)
  • CPU: Octa-core (2xX.X GHz Cortex-A75 & 6×1.8 GHz Cortex-A55)
  • GPU: Mali-G52
  • Storage: 64GB 4GB RAM
  • Memory Card slot: microSDXC (dedicated slot)
  • eMMC 5.1


  • Main Camera: Triple
    • 13 MP, f/2.2, 26mm (wide), 1/3.06″, 1.12µm, PDAF
    • 2 MP, f/2.4, (macro)
    • 2 MP, f/2.4, (depth)
  • Features: LED flash, HDR, panorama
  • Video: [email protected]
  • Selfie Camera: Single – 5 MP, f/2.2, (wide), 1/5.0″, 1.12µm
  • Features: HDR, panorama
  • Video: [email protected]


  • Radio:
  • Loudspeaker: Yes
  • Audio 3.5mm jack: Yes


  • WLAN: Wi-Fi 802.11 b/g/n, hotspot
  • Bluetooth: 5.0, A2DP, LE
  • GPS: Yes, with A-GPS, GLONASS, BDS
  • NFC: No
  • USB: microUSB 2.0, USB On-The-Go


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


  • Battery Type and Capacity: Li-Po 5000 mAh, non-removable
  • Charging: Reverse charging

Realme C21Y Price and Availability

Realme C21Y

The Realme C21Y is available in two colors — Cross Black and Cross Blue.

  • 3GB RAM + 32GB internal storage model costs 3,490,000 Vietnamese dongs (~$151)
  • 4GB RAM + 64GB internal storage model costs 3,990,000 Vietnamese dongs (~$173)
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