Realme C21 vs Realme C55
Shop Android Smartphones
Realme C21
Starting at
£198.00
Realme C55
Starting at
£147.00What's the difference between the Realme C21 and Realme C55?
Realme C21 vs C55 comes down to the chipset, RAM and screen size. Refurbished, the Realme C55 starts at £147, £51 less than the Realme C21. The Realme C55 is the newer model, released in 2023.
Refurbished from
Chipset
RAM
Screen size
Main camera
Front camera
- Chipset: Mediatek MT6765G Helio G35 on the Realme C21, Mediatek MT6769H Helio G88 (12 nm) on the Realme C55.
- The Realme C55 has more RAM: 8 GB vs 4 GB.
- Screen size: 6,5 inch on the Realme C21, 6,72 inch on the Realme C55.
Realme C21 vs Realme C55 specs
The Realme C21 and Realme C55 are both unlocked Android phones with 4G connectivity and 5000 mAh batteries suited to everyday use. The Realme C55 offers a larger and sharper screen with higher resolution and slightly bigger size, better cameras with a 64 megapixel main and 8 megapixel front camera, as well as double the RAM and four times the storage compared to the Realme C21. The Realme C21 provides a simpler experience with 4 GB RAM and 64 GB storage, fitting users who want essential features. Both phones support microSDXC cards and have similar physical sizes and weights. Choose the C55 if you want more memory, storage, and camera detail or the C21 if you prefer a straightforward phone for daily tasks.
Realme C21 vs Realme C55 price
Colour
- BlackSold out
- BlackSold out
Storage
- 64GBSold out
- 256GBSold out
Realme C21 vs Realme C55 battery life and software updates
Durability covers battery size, software updates, and design factors.
Battery Capacity
Both the Realme C21 and Realme C55 have a 5000 mAh battery. This means you can expect similar battery life from either device, suitable for a full day of typical use without frequent recharging.
Battery
Foldable
Year of release
Realme C21 vs Realme C55 performance
Performance differences affect how smoothly the phones handle apps and multitasking. The Realme C55 has a newer chipset, more RAM, and larger storage options, while the Realme C21 offers a simpler setup with less memory and storage.
Chipset And RAM
The Realme C21 uses the Mediatek MT6765G Helio G35 chipset with 4 GB RAM, which supports everyday apps and basic multitasking. The Realme C55 features a Mediatek MT6769H Helio G88 chipset with 8 GB RAM, which keeps more apps open at once and handles more demanding tasks with greater ease.
Storage Capacity
Realme C21 comes with 64 GB of storage, enough for a moderate number of apps, photos, and files. Realme C55 offers a larger 256 GB storage option, providing ample space for extensive media libraries and many apps without needing frequent file management.
Chipset
RAM
Realme C21 vs Realme C55 screen
Screen quality impacts viewing comfort and clarity. Both phones have IPS LCD screens, but the Realme C55 provides a larger and higher resolution display for a more detailed and spacious viewing experience.
Screen Size And Resolution
The Realme C21 has a 6.5 inch screen with 720 x 1600 resolution, suitable for everyday use and casual video watching. The Realme C55 features a larger 6.72 inch screen with a sharper 1080 x 2400 resolution, offering more room and clearer images for videos, reading, and gaming.
Refresh rate
Resolution
Screen size
Screen type
Realme C21 vs Realme C55 camera
Camera quality is a key difference in audiovisual features. The Realme C55 offers higher megapixel counts on both front and main cameras, which can capture more detail in photos and selfies.
Front Camera
Realme C21 has a 5 megapixel front camera suitable for video calls and simple selfies. Realme C55 provides an 8 megapixel front camera, delivering clearer and more detailed selfies and video calls.
Main Camera
The Realme C21's main camera has 13 megapixels, good for everyday photography. The Realme C55 significantly increases this to 64 megapixels, allowing for sharper and more detailed photos, especially in well-lit conditions.
Front camera
Main camera
Realme C21 vs Realme C55 size and design
Other features include size, weight, SIM and SD card details, and network compatibility. Both phones are unlocked and support dual physical SIM cards with microSDXC expansion, with similar dimensions and weight.
Physical Size And Weight
The Realme C21 measures 165.2 mm in height, 76.4 mm in width, and 8.9 mm in depth, weighing 190 g. The Realme C55 is slightly taller at 165.6 mm, narrower at 75.9 mm, and thinner at 7.9 mm, with a weight of 189 g. These small differences affect handling and pocket fit subtly.
SIM And Storage Expansion
Both phones support dual physical SIM cards and microSDXC cards, so you can use two phone numbers and expand storage using a memory card. This is helpful if you need to separate work and personal calls or increase your available media space.
Network Compatibility
Realme C21 and Realme C55 both support 4G mobile networks. This ensures reliable internet connectivity for calls, browsing, and streaming where 4G is available.
Carrier compatibility
Depth
Height
Mobile network
SD card slot
SIM card
Weight
Width
Realme C21 or Realme C55: which should you buy?
Buy the Realme C55 if
- you want to spend less: it starts at £147, £51 less than the Realme C21
- you want more RAM (8 GB vs 4 GB)
- you want a higher-resolution main camera (64 megapixels vs 13 megapixels)
Realme C21 vs Realme C55 FAQs
Realme C21 vs C55 comes down to the chipset, RAM and screen size. Chipset: Mediatek MT6765G Helio G35 on the Realme C21, Mediatek MT6769H Helio G88 (12 nm) on the Realme C55. The Realme C55 has more RAM: 8 GB vs 4 GB.
The Realme C55 is cheaper refurbished, from £147 compared with £198 for the Realme C21.
Both have the same battery: 5000 mAh.
The Realme C55 has a higher-resolution main camera: 64 megapixels vs 13 megapixels.
The Realme C55 adds more RAM (8 GB vs 4 GB), a higher-resolution main camera (64 megapixels vs 13 megapixels) and a higher-resolution front camera (8 megapixels vs 5 megapixels). Refurbished, it costs £51 less (from £147 vs £198).
Refurbished, the Realme C21 comes in 64GB, and the Realme C55 in 256GB.









