realme C21

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realme C21
realme C21 black bottom
realme C21 black front left side
realme C21 black front right side
realme C21 black left side
realme C21 black back left side
realme C21 black back right side
realme C21 black back
realme C21 black right side
realme C21 black top
realme C21 blue back
32 GB
64 GB

Pro and cons realme C21

  • Large battery, long battery life
  • Fingerprint-free body
  • Dual SIM + memory slot
  • Low price
  • Very basic camera

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realme C21 product description

The realme C21 is an affordable smartphone with a large battery that can easily get you thru the day. For a budget phone, this C21 has some useful features that we'll take a closer look at here. Will this be your next mobile or should you look elsewhere?

Makes the right choices

Phones do not get much cheaper than this. Ideal for those who do not want to spend too much, but always be careful. Manufacturers always have to make concessions to reach such a low price and sometimes the wrong choices are made. In the case of this Realme C21, we can immediately see that. But that doesn't mean it is all good. For example, you charge the C21 with an old-fashioned MicroUSB cable, the 32GB model has only 3GB of RAM memory, you can't make use of lightning fast Wi-Fi 802.11ac and the 13MP camera can be called "average" at best. If you're willing to turn a blind eye to that then this C21 might be for you.

realme C21 black front left side

Camera does the minimum

The C21 has a spacious 6.5 inch screen with HD+ resolution. Full HD + would be sharper but you rarely see that in this price segment. On top is a small notch for the 5MP selfie camera. This features its own portrait mode and also a beauty mode is not lacking. On the left side is a slot for a dual SIM card + a memory card up to 256GB. On the back is a triple camera with flash and a physical fingerprint scanner. The body is fingerprint resistant thanks to its special design. The 13MP AI Triple Camera features a nite mode, slow-motion video and a separate macro lens for extreme close-ups. There is no separate widescreen or zoom lens. You can shoot video in up to FHD (1080p). Nothing exciting, but the minimum.

Most important realme C21 specifications

  • Large 6.5" Mini-Drop Fullscreen display with HD+ resolution
  • 13+2+2MP camera with macro and black and white lens
  • 5MP selfie camera with portrait mode
  • Large 5000 mAh battery that can also charge others
  • 3-Card Slot: 2x SIM card + 1x memory card (up to 256GB)
  • MediaTek Helio G35 processor with 3/32GB or 4/64GB of memory
  • Physical fingerprint scanner at the back

Processor with HyperEngine

The built-in battery is on the large side at 5000 mAh and has a battery life of several days. There is a Super Power Saving Mode that can still deal with an almost empty battery. This gives you enough time to finish a message, leave a voice message or use the route planner. Fast charging is not an option, so once the battery is empty, you will have to give it a rest. The MediaTek Helio G35 processor is a basic chipset but realme thinks it's still suitable for gaming thanks to HyperEngine technology. It will undoubtedly help a little but don't expect miracles from it. All in all, this is and will remain a basic phone with idem price.

realme C21 specification summary

Dimensions 165,2 x 76,4 x 8,9 mm
Weight 190 gr
EAN code 6941399038011, 6941399037991, 6941399037984
Fingerprint recognition
Operating system
Android 10
Colour display 6.5 inch, Mini-drop Fullscreen, notch
Camera 13 MP, 2 MP, 2 MP
Front camera 5 MP
Processor 2.3 GHz, octa core
Dual SIM
Data network
4G (LTE)
Build-in memory
Internal memory 32 GB (Storage), 64 GB (Storage)
Power supply
Battery 5000 mAh

All realme C21 specifications

Video about the realme C21

Suppose you're considering buying a new mobile. And you're hesitating between the realme C21 and the Oppo A15. Which one should you get? This video found out

realme C21 alternatives

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Product images at scale
realme C21
Samsung Galaxy S10+ (G975)
Samsung Galaxy Note 10+ (N975)
Samsung Galaxy Note 9 (N960)
Samsung Galaxy Note 10 (N970)

Photos at scale

 Current product    
Fingerprint recognition
Android109.0 (Pie)9.0 (Pie)8.19.0 (Pie)
Colour display6.5 inch, Mini-drop Fullscreen, notch6.4 inch, Curved Dynamic AMOLED Quad HD+, hole-punch display6.8 inch, Dynamic AMOLED Infinity-O Display6.4 inch, Infinity Super AMOLED Quad HD+6.3 inch, Dynamic AMOLED Infinity-O Display
Camera13 MP, 2 MP, 2 MP12 MP, 12 MP, 16 MP12 MP, 12 MP, 16 MP, VGA camera12 MP, 12 MP, dual camera sensor12 MP, 12 MP, 16 MP
Front camera5 MP10 MP, 8 MP10 MP8 MP10 MP
Processor2.3 GHz, octa core1.7 GHz, 2.4 GHz, 2.8 GHz, octa coreOcta core1.8 GHz, 2.7 GHz, Samsung Exynos 9810, octa coreOcta core
Dual SIM
4G (LTE)
Internal memory32 GB (Storage), 64 GB (Storage)1 TB (Storage), 128 GB (Storage), 512 GB (Storage)256 GB (Storage), 512 GB (Storage)128 GB (Storage), 512 GB (Storage)256 GB (Storage)
Battery5000 mAh4100 mAh4300 mAh4000 mAh3500 mAh

Complete comparison between the realme C21 and these alternatives or compare with other models

FAQs about the realme C21