Realme C21 Smartphone Review - Maximum Autonomy

The company realme is a newcomer to the mobile technology market. If other manufacturers usually take several years to build up, then this Chinese brand is striding forward by leaps and bounds. The next such step was the new budget smartphone realme C21.

The novelty costs 10,000 rubles and fully justifies its price. Among the key features are an interesting design, a capacious battery, NFC, a powerful processor and a good amount of memory.

This unit will also receive TÜV Rheinland certification. In short, this is a cycle of independent tests, the passage of which indicates that the user has a high-quality and reliable device. In particular, on the official page of the model they report that the phone should last 3 years.

More about realme C21 I will tell below.


  • Materials: plastic, glass
  • Operating system: Android 10
  • Processor: MediaTek Helio G35, 8 cores, clock speed up to 2.3 GHz
  • Video accelerator: PowerVR GE8320
  • RAM/ROM: 4/64 GB
  • Slot for memory card : yes, separate
  • Display: 6.5 inch, IPS, resolution 160 0×720
  • ) Front camera: 5 MP, f/2.2
  • Security: Fingerprint scanner, Face unlock
  • Navigation: GPS, Glonass, Beidou
  • Wireless modules: NFC, Bluetooth 5.0, Wi-Fi 2.4GHz
  • Battery: 5000 mAh
  • Dimensions: 165.2 x 76.4 x 8.9 mm
  • Weight: 190 g

Package and appearance

realme C21 arrives in a yellow cardboard box with a neat and discreet design. There is some information about the device on the back, just the model name in front.

Inside is a neatly packed smartphone with a shipping film on the display, an envelope with a warranty card and short instructions for use, a cable microUSB and power supply 10W. There is no cover, but it is not really needed here. In my case, the model is black, but there is also a blue version.

From the front, the novelty looks like any inexpensive device in 2021: fairly wide frames and a camera in the waterdrop notch. The display is covered with Gorilla Glass.

The layout of the control buttons and connectors is standard. At the bottom there is an input for connecting a charger and an output 3.5 for headphones, on the right there is a power button and volume control. On the left is a non-hybrid tray: you can put two SIMs and a memory card microSD up to 256 GB in it. The top edge is not occupied.

Realme C21 case is made of plastic. The back panel received a geometric pattern. On the one hand, it visually distinguishes the device from competitors, and on the other hand, due to the textured surface, it makes it non-slip.

But what is perhaps the most pleasant thing is that it does not get covered with prints at all! This is great, because I, for example, do not like using covers, and any glossy device simply leaves no choice. In this case, you can walk without a case, and your smartphone will not turn into one big fingerprint. It is also worth noting that the plastic is of high quality and quite strong - for almost two weeks of wearing it without any protection, scratches and other troubles did not appear on the case.

In addition to the pattern, the back panel contains a square camera unit (more than the usual solution for 2021), a fingerprint scanner and a multimedia speaker.

The overall impression of the design and ergonomics is positive. The model lies comfortably in the hand, does not slip, does not get dirty, the buttons and the fingerprint scanner are located in optimal places.

The fact that the headphone output is located at the bottom is good, which is convenient if the smartphone is in your pocket. Even the camera does not have to complain, as it almost does not stick out above the body. But the fact that is slightly frustrating is the speaker located at the back. To prevent the sound from being muffled, the phone must be held in hands or placed on the display.


realme C21 is equipped with a diagonal IPS display 6.5 inches and resolution - 1600 * 720 pixels. The phenomenon for this segment is quite standard. From a psychological point of view, HD resolution is insufficient for such a diagonal. From a practical point of view, it's enough. In games, movies and everyday work, pixels are not visible, but if you look specifically for them, then, of course, you can find them. But why?

The color rendition of the screen is excellent, I watched TV shows on my smartphone and did not experience any discomfort. The brightness here is high, there were no sunny days while owning the device, but considering that the automatic setting sets the backlight somewhere at the level of 55-60% and this is quite enough, I can suggest that there will be no problems in the sun. The minimum brightness is comfortable for use in total darkness.

other items on the screen. In addition, there is a night mode and the already mentioned auto brightness control. I note that it works adequately, but there is one caveat. If you manually change the value in this mode, then it will be set until the automatic setting is turned off and on again.

Performance and interface

realme C21 based on Helio G35. It is an octa-core processor clocked at up to 2.3 GHz. It was released in 2020 and is positioned as a gaming solution for the budget segment. It works together with 4 GB of RAM (there is a 3 GB version). The amount of permanent storage is 64 GB (there is a version of 32 GB).

It is immediately worth noting that for 10 thousand rubles in a smartphone with NFC, 4/64 GB memory is more than we are used to seeing. As a rule, in this price segment they offer 3/32 GB or deprive the device of contactless payment.


The combination of G35 and 4 GB of RAM is enough to run games at low or medium settings. I installed Call of Duty, Asphalt 9, WoT, Mortal Kombat, and the device successfully coped with their playback. I spent an average of 1.5-2 hours on games and did not notice any deterioration in the process, and if there is heating, it is minimal. I think that the device is quite possible to buy, including in order to play, especially if the budget is small.

Out of the box, the device runs on Android 10 with the realme UI shell. I like this interface. It is visually pleasing, there are interesting settings: splitting the screen, speeding up application animations, gesture control, nightly super-waiting (disables background processes so that they do not drain the battery and interfere with sleep), various tools and much more. At the same time, the interface is not overloaded and it is easy to understand it.

Face and finger scanners are responsible for protecting user data. Both are fast and error-free.

Sound and connectivity

Wireless interfaces here are Wi-Fi b/g/n, LTE, Bluetooth 5.0, NFC and navigation modules.

The device can perform access point, keeps a mobile communication well, quickly connects with satellites for navigation. In addition, there is a compass, so not only location is displayed in the maps, but also the direction of movement.

The microphone in the smartphone works perfectly - the interlocutors clearly heard the voice, even if there is noisy around. The sound from the multimedia dynamics is quite loud: you can wash the dishes and listen to what happens in your favorite TV series. In the headphones, the sound and volume are good. If you wish to sound, you can up - there is a built-in equalizer and ready presets.

There are a function of contactless payments in the phone. Cards are tied without problems.

By the way, on the official website in the characteristics, the NFC module is not specified. The network found an explanation that this option is only available for the Russian version of the model. This speaks about the attention of the manufacturer to the buyers of the market, where it is planned to sell equipment, and this is a plus to the brand carme. Those who are planning to buy a device with Aliexpress, it is worth checking the availability of contactless payment.

The camera

Realme C21 received a triple main chamber with 3 + 2 + 2 meters sensors. Additional - macro and depth. Frontalka - 5 mp.

The camera interface is standard. Among the modes:

  • Night survey.
  • Expert (manual settings).
  • Portrait.
  • Ultra Macro.
  • HDR.
  • Flower saturation mode.

In addition, the model has a 2-x and 4-x multiple digital approximation (running and when recording video). The improvement mode is available for selfie.

The weather did not indulge in bright sunny days, so I had to take pictures in not the most suitable conditions for this purpose. Below in the photos you can see the result and evaluate the capabilities of the device yourself.

From myself, I note that I used three modes - standard (without any improvements) and color saturation.

In my opinion, they work quite randomly. In some cases, the best shot is the one taken without any enhancements. Sometimes an image with saturated colors is not very realistic. But most often this mode still adds brightness and colors where they are lacking due to lighting, and the photo becomes more successful. There is a night mode, the device takes about 5 seconds to process the photo. Selfies are quite good, you can share the finished picture in social networks. The video is recorded without stabilization in the maximum resolution of FHD with 30 kbps, there were no discoveries here.

Summing up the above, I would like to note that I rather liked the camera than not. There were bad shots, but in most cases the picture is not bad, and this is considering the fact that the weather was clearly not for shooting. I can not say that photo calls are very cool here, but it is a "strong" camera, which will not let go both in everyday use and somewhere on a trip, where you need to have clear confidence that the photos will turn out good.


In Realme C21, a battery was installed on 5000 mAh. This is a good value, although there are quite a few devices on the market with a similar capacity and even more. There are several modes in the phone for more economical spending battery, but I did not use them, because, in my opinion, it is not necessary.

For 1.5 weeks of use, I charged a smartphone 3 times. At the same time, I did not save the battery, and I used the phone in the standard mode for me - periodic calls, social networks, listening to music online, viewing TV shows for film engines and videos on YouTube. In addition, I photographed and played. With this use, the battery lasted perfectly. It charges approximately 2 hours, the microUSB connector, and even in this smartphone there is a reversing charging - other gadgets can be charged from it.


Realme C21 is a representative of the budget segment.


  • Practical and pretty housing.
  • Good image quality on the display.
  • a lot of memory.
  • The processor is quite powerful for any everyday tasks.
  • Excellent autonomy.
  • Non-Combined Tray.
  • The presence of NFC.
  • Pleasant interface without advertising.


  • Not the most convenient location of the multimedia speaker (subjectively).
  • Outdated MicroUSB (do not like the fact that it is simply uncomfortable).
  • No Wi-Fi 5 GHz.
  • Many will say that there is a low resolution of the display, but when used it is not felt.

As a result: for 10 thousand rubles you receive a long-playing smartphone with excellent appearance and adequate performance without lags of the system. Additionally, it has a good chamber and can replace a bank card. Who will fit? Everyone who has a budget for the purchase does not exceed the above amount and want to buy a decent device for this money.