Realme C25Y vs Realme C21Y: A Detailed Comparison

The Realme C series is known for offering impressive features at budget-friendly prices. The Realme C25Y and C21Y are two popular contenders in this space, both targeting users seeking affordability. But which one truly delivers the best value?
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🏆 Quick Verdict

The Realme C25Y edges out the C21Y primarily due to its faster charging capabilities. While both share the same Unisoc T610 chipset, the C25Y's 18W charging offers a noticeable advantage. If reverse charging isn't a priority, the C25Y is the slightly better choice.

PHONES
Phone Names Realme C25Y Realme C21Y
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 2100HSDPA 850 / 900 / 2100
4G bands1, 3, 5, 8, 38, 40, 411, 3, 5, 8, 38, 40, 41
SpeedHSPA, LTEHSPA, LTE
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
Launch
Announced2021, September 162021, June 21
StatusAvailable. Released 2021, September 30Available. Released 2021, July 02
Body
BuildGlass front, plastic back, plastic frameGlass front, plastic back, plastic frame
Dimensions164.5 x 76 x 9.1 mm (6.48 x 2.99 x 0.36 in)164.5 x 76 x 9.1 mm (6.48 x 2.99 x 0.36 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight200 g (7.05 oz)200 g (7.05 oz)
Display
Resolution720 x 1600 pixels, 20:9 ratio (~270 ppi density)720 x 1600 pixels, 20:9 ratio (~270 ppi density)
Size6.5 inches, 102.0 cm2 (~81.6% screen-to-body ratio)6.5 inches, 102.0 cm2 (~81.6% screen-to-body ratio)
TypeIPS LCD, 420 nits (typ)IPS LCD, 400 nits (typ)
Platform
CPUOcta-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
ChipsetUnisoc T610 (12 nm)Unisoc T610 (12 nm)
GPUMali-G52 MP2Mali-G52 MP2
OSAndroid 11, Realme UI RAndroid 10/ Android 11
Memory
Card slotmicroSDXC (dedicated slot)microSDXC (dedicated slot)
Internal64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM32GB 3GB RAM, 64GB 4GB RAM
 eMMC 5.1eMMC 5.1
Main Camera
Dual-13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, PDAF 2 MP (macro) Auxiliary lens
FeaturesLED flash, HDR, panoramaLED flash, HDR, panorama
Single8 MP, f/2.0, 26mm (wide), 1/4.0", 1.12µm5 MP, f/2.2, (wide), 1/5.0", 1.12µm
Triple50 MP, f/1.8, 26mm (wide), PDAF 2 MP (macro) Auxiliary lens-
Video1080p@30fps1080p@30fps
Selfie camera
FeaturesHDRHDR, panorama
Single8 MP, f/2.0, 26mm (wide), 1/4.0", 1.12µm5 MP, f/2.2, (wide), 1/5.0", 1.12µm
Video720p@30fps1080p@30fps
Sound
3.5mm jack YesYes
35mm jackYesYes
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, LE5.0, A2DP, LE
NFCNoNo
PositioningGPS, GLONASS, BDSGPS, GLONASS, BDS
RadioUnspecifiedUnspecified
USBmicroUSB 2.0microUSB 2.0, OTG
WLANWi-Fi 802.11 b/g/nWi-Fi 802.11 b/g/n
Features
SensorsFingerprint (rear-mounted), accelerometer, proximity, compassFingerprint (rear-mounted), accelerometer, proximity, compass
Battery
Charging18W wiredReverse wired
Type5000 mAh5000 mAh
Misc
ColorsGlacier Blue, Metal GrayCross Black, Cross Blue
ModelsRMX3265, RMX3268, RMX3269RMX3261, RMX3263
PriceAbout 140 EURAbout 130 EUR

Realme C25Y

  • Faster 18W Charging
  • Potentially Slightly Better Camera
  • Modern Design
  • Good Battery Life

  • Unisoc T610 Chipset (Limited Performance)
  • HD+ Display (Not the Sharpest)

Realme C21Y

  • Reverse Charging Capability
  • Good Battery Life
  • Potentially Lower Price

  • Slower Charging
  • Lower Resolution Main Camera
  • Older Design

Display Comparison

Both phones feature a 6.5-inch IPS LCD display with a resolution of 1600 x 720 pixels (HD+). Expect similar viewing experiences in terms of color accuracy and brightness, though the C25Y might have a slightly more modern panel. Neither phone excels in display quality, but they are adequate for everyday use.

Camera Comparison

The Realme C25Y typically features a 50MP main camera, an 8MP ultrawide, and a 2MP macro lens, while the C21Y has a 13MP main camera, a 2MP monochrome sensor, and a 2MP macro lens. The C25Y's higher resolution main sensor should result in slightly better image quality, especially in well-lit conditions. Both offer decent front-facing cameras for selfies.

Performance

Performance is virtually identical. Both devices are powered by the Unisoc T610 chipset, which is a decent performer for basic tasks like browsing, social media, and light gaming. Don't expect flagship-level performance; these phones are designed for efficiency rather than raw power. Expect some lag with demanding apps.

Battery Life

Both phones pack a 5000mAh battery, offering excellent all-day battery life. However, the C25Y supports 18W fast charging, while the C21Y offers reverse charging. This means the C25Y will charge significantly faster, while the C21Y can be used to charge other devices (albeit slowly).

Buying Guide

The Realme C25Y is ideal for users who prioritize faster charging and a slightly more modern design. The Realme C21Y is a good option for those who value reverse charging functionality and potentially a lower price point (depending on current deals).

Frequently Asked Questions

❓ Is the Unisoc T610 chipset good for gaming?
The Unisoc T610 is adequate for casual games, but don't expect to play demanding titles smoothly. It's best suited for basic usage and light gaming.
❓ What does reverse charging on the C21Y mean?
Reverse charging allows you to use the C21Y's battery to charge other devices, like earbuds or smartwatches, albeit at a slow rate.