Display-to-body ratio
The ratio of the screen area to the total front panel area of the phone. Simply put, this spec describes how much of the front panel is occupied by the screen; the rest is the bezels.
This indicator is given exclusively for smartphones with touch screens — it is for them that it is most relevant. The larger the percentage of the body is occupied by the screen, the thinner are the bezels, the neater the smartphone looks and the more convenient it is to work with it with one hand. As for specific numbers, the average values are 80 – 85 %, the higher values allow us to talk about a
thin bezel, and more than 90 % — about a
“bezel less” design.
Separately, we note that this parameter has nothing to do with the aspect ratio of the screen. The aspect ratio describes only the display itself — its proportions, the ratio between the larger and smaller side of the rectangle.
CPU model
The most popular nowadays are chips from
Qualcomm and
MediaTek, CPUs from
Unisoc are slightly less common. Qualcomm has several processors of each series, namely
Snapdragon 778G,
Snapdragon 7 Gen 1,
Snapdragon 7+ Gen 2,
Snapdragon 7s Gen 2,
Snapdragon 7 Gen 3,
Snapdragon 7+ Gen 3,
Snapdragon 865,
Snapdragon 870,
Snapdragon 888,
Snapdragon 8 Gen 1,
Snapdragon 8+ Gen 1,
Snapdragon 8 Gen 2,
Snapdragon 8 Gen 3,
Snapdragon 8s Gen 3. And Mediatek has a low cost series
MediaTek Helio P and a line of advanced chipsets
MediaTek Dimensity (
Dimensity 1000,
Dimensity 7000,
Dimensity 8000,
Dimensity 9000).
Knowing the name of the CPU model installed in the smartphone, you can find detailed data on a particula
...r CPU and evaluate its level and general capabilities. This is especially true in light of the fact that these capabilities depend not only on the number of cores and clock speed, but also on the specific nuances of the design.CPU frequency
The clock frequency of the CPU that the device is equipped with. For multi-core processors, which are standard in modern smartphones, the frequency of each individual core is implied; and if the processor has cores with different frequencies (see "Number of cores") — usually, the maximum indicator is given.
In general,
high performance smartphones have high frequency of the processor. However, note that this parameter itself is not directly related to the capabilities of the CPU: many other features of the chip affect the actual performance, and often a low cost solution with a higher clock speed turns out to be less performant than an expensive one, and at the same time, presumably, more "slow" processor. In addition, the overall performance of the system directly depends on a whole set of other factors — primarily the amount of RAM. Therefore, when evaluating a smartphone, it is worth focus not so much on the frequency of the processor, but on the general specs of the system and visual indicators like the results in tests (see below).
CPU cores
The number of cores in the processor of a mobile phone.
The core in this specific case refers to the part of the processor that executes one thread of commands. Accordingly, the presence of multiple cores allows you to work with multiple threads simultaneously, which has a positive effect on performance. At the same time multi-core CPUs are now found even in the most inexpensive modern smartphones — even
chips with 8 cores are not uncommon among them, not to mention simpler
quad -core and
six-core solutions. And some modern processors can have up to
10 cores.
Theoretically, more cores can improve processor efficiency. However, in fact, the performance of the CPU (and the smartphone itself, eventually) depends on many additional factors. Thus the number of cores is purely a reference parameter. For example, a high-end quad-core processor may be much more performant than an inexpensive eight-core one. So you really should focus on overall level of performance and the results shown in various tests (see below)
It is also worth mentioning that individual cores of mobile CPUs may vary in clock speed, performance and power consumption. The classic version is 8 cores working according to the “4 + 4” scheme: 4 relatively “weak” and power efficient cores are responsible for simple tasks like Internet surfing, and ano
...ther 4 – more powerful ones - turn on when high performance is required (for example, in games with advanced graphics). This scheme of work allows you to achieve the optimal balance between performance and energy efficiency of CPU.GPU
The model of the GPU used in the mobile phone.
This module is responsible for all tasks related to graphics; accordingly, its specs directly affect the efficiency of processing a particular picture. This is especially noticeable in the example of modern 3D games. Therefore, the presence of a powerful video adapter is especially important for
gaming smartphones. And knowing the model of the GPU, you can find detailed data about it and evaluate its capabilities.
RAM
The parameter determines the overall performance of the smartphone: the more RAM, the faster the device works and the better it copes with an abundance of tasks and / or resource-intensive applications (ceteris paribus). This is even more true in light of the fact that large amounts of "RAM" are usually combined with powerful advanced processors. However, only devices with identical operating systems can be directly compared with each other, and in the case of Android, with the same versions and editions of this OS (for more on all this, see "Operating system"). This is due to the fact that different operating systems and even different versions of the same OS can differ markedly in terms of RAM requirements. For example, iOS, thanks to good optimization for specific devices, is able to work efficiently with
3 GB of RAM. For modern versions of Android in the regular edition (not Go Edition), the mentioned 3 GB is actually the required minimum. Under such an OS, it is better to have at least
4 GB or
6 GB of RAM. In high-end devices with powerful electronic "stuffing" you can also find more impressive numbers -
8 GB or even
12 GB or more.
Memory storage
The volume of storage installed in the phone.
This volume directly determines how much data can be stored on the phone without using removable memory cards. This indicator is especially important for models that
don't have memory card slots. However, even if memory cards are supported, built-in storage is still preferable: at least it works faster, and it usually has fewer restrictions on its use (in particular, most smartphones allow you to install applications only on storage).
As for specific volumes, the actual minimum for a modern smartphone is
32 GB; less “capacious” devices are becoming increasingly rare these days.
64 GB is considered a comfortable minimum,
128 GB is considered average indicator,
256 GB - above average. Some high-end devices are equipped with
512 GB and even
1 TB< /a>.
We also note that the actual amount of memory available to the user will inevitably be somewhat less than the total, since part of the drive is occupied by operating system files.Lenses
The number of individual lenses provided in the module of the main (rear) camera of the device. Specified only if there are several lenses. At the same time, each «eye» has its own sensor and, in fact, is a separate camera; however, they can be used in conjunction, forming one image from data from several lenses, or mutually complementing each other's capabilities. As an illustration of the second case, the following example can be given: when using the zoom, the smartphone can automatically switch from the main optics to the telephoto lens when the magnification selected by the user exceeds a certain threshold.
The simplest version of the main module with several lenses is a
dual camera, however, devices with
3 or more rear cameras are becoming more common (in some models, the number of lenses can reach six). Anyway, these cameras usually differ in specifications and perform different functions. So, an ordinary colour camera can be supplemented with a lens for black-and-white shooting, which improves contrast; in some models, lenses with different focal lengths allow you to choose the optimal viewing angle for certain conditions; information from an auxiliary lens (see below) is usually used to adjust the depth of focus on an already finished shot, etc. These details should be clarified separately, but anyway, several lenses mean more shooting options.
Telephoto lens
Specs of
the telephoto lens of the main camera installed in the phone.
These details are relevant only for cameras with several lenses (see "Number of lenses") — and not all, but only those where there is a lens with a large focal length (much larger than in the main lens) and, accordingly, relatively high magnification. In the same paragraph, four main parameters can be indicated: resolution, aperture ratio, focal length and additional sensor data.
Resolution(in megapixels, MP)
The resolution of the sensor used for the telephoto lens.
The maximum resolution of the resulting image directly depends on the resolution of the sensor; and the high resolution of the "picture", in turn, allows you to display small details better. On the other hand, an increase in the number of megapixels in itself can lead to a deterioration in the overall image quality — due to the smaller size of each individual pixel, the noise level increases. As a result, the direct resolution of the camera has little effect on the quality of photos and videos — a lot also depends on the size of the sensor, the features of the optics and various design tricks used by the manufacturer.
As for the resolution of a telephoto lens, it is, usually, somewhat lower than that of the main optics (see "Main lens") or corresponds to it. It does not make sense to provide higher values for a number of reasons — in particular, beca
...use a wide-angle main lens requires a fairly significant supply of pixels for digital zoom, and this is not so critical for a telephoto lens — its zoom level itself is quite high.
Aperture
Aperture describes the ability of a lens to transmit light. It is written as a fractional number, for example f/1.9. Moreover, the larger the number in the denominator, the lower the aperture ratio, for example, an f/2.6 lens will transmit less light than f/1.9.
High aperture gives the camera a number of advantages: it allows you to shoot at low shutter speeds, minimizing the likelihood of “shake”, and also makes it easier to shoot in low light and shoot with artistic background blur (bokeh). However, for a telephoto lens, such features are not as important as for the main camera — such lenses usually have a specific purpose, and in this case a large depth of field is often more desirable, achieved just at a small aperture. So in general, this parameter is more of a reference than practically significant when choosing.
Focal length
The focal length is a distance between the sensor and the centre of the lens (focused to infinity), at which the most clear image is obtained on the sensor. However, for smartphones, the specifications indicate not the actual, but the so-called equivalent focal length — a conditional indicator recalculated using special formulas. This indicator can be used to evaluate and compare cameras with different sensor sizes (the actual focal length cannot be used for this, since with a different sensor size the same real focal length will correspond to different viewing angles).
Anyway, the viewing angle and the degree of magnification directly depend on the equivalent focal length: a larger focal length gives a smaller viewing angle and a larger size of individual objects that fall into the frame, and a decrease in this distance, in turn, allows you to cover more space. And since telephoto lenses must provide more magnification than the main optics, they, by definition, have a longer focal length. However compared to classic telephoto lenses for digital cameras, this distance is small — about 50 – 60 mm, or even less than 40 mm (which for a conventional camera corresponds to medium-focus and wide-angle optics, respectively). But this cannot be called a disadvantage, given the peculiarities of filming on smartphones. In addition, there are exceptions — smartphones with "long-range" optics of 80 mm or more, which is already quite a decent indicator for a traditional camera.
Field of view(in degrees) It characterizes the size of the area covered by the lens, as well as the size of individual objects "seen" by the camera. The larger this angle is, the more of the scene gets into the frame, but the smaller the individual objects in the image are. The field of view is directly related to the focal length (see above): increasing this distance narrows the field of view of the lens, and vice versa.
Note that this parameter is generally considered important for professional use of the camera rather than for amateur photography. Therefore, the viewing angle data is given mainly for smartphones equipped with advanced cameras — including in order to emphasize the high class of cameras in this way. Specifically, in telephoto lenses, these angles are relatively small — we recall that high magnification in such optics is achieved precisely by narrowing the field of view. In most cases, the size of this field lies in the range of 45 – 52°.
Additional Sensor Data
Additional information regarding the sensor installed in the telephoto lens. This item can specify both the size (in inches) and the sensor model, and sometimes both parameters at once. Anyway, such data is provided only if the device is equipped with a high-class sensor. With the model, everything is quite simple: knowing the name of the sensor, you can find detailed data on it. The size is worth considering a little more.
The size of the sensor is traditionally indicated in fractional parts of an inch — accordingly, for example, a 1/3.4" sensor will be larger than 1/4". Larger sensors are considered more advanced, as they provide a better image at the same resolution. This is due to the fact that due to the larger sensor area, each individual pixel is also larger and receives more light, which improves sensitivity and reduces noise. Of course, the actual image quality will also depend on a number of other parameters, but in general, a larger sensor size usually means a more advanced camera. However, it should be said that sensors in telephoto lenses are generally noticeably smaller than in main lenses — for example, the mentioned 1/3.4" and 1/4" are quite common options. This is mainly due to the secondary role of such cameras — small sensors are cheaper. In addition, with long-range shooting, a large sensor, for a number of reasons, is not as important as in a regular one.
