The RAM memory together with the processor ensures the running of applications on your mobile device, but it also takes care of the simple operation of the operating system. It is very important to distinguish operational memory from user memory, which is mentioned later in the text.
The user memory creates space in the phone for storing files, and the operating memory expresses the capacity with which the phone is able to operate with these files. Simply put, RAM is a high-speed memory in which the device stores currently needed applications. He thus has significantly faster access to them than if he had to use the storage space of his mobile phone. In the case of choosing the right RAM capacity, the rule is that the larger the operating memory, the more applications the phone will have quickly accessible. The specific need for operating memory varies depending on how you use your mobile phone.
The size of the operating memory
If you compare two phones with the same RAM capacity, each may end up giving you completely different performance. Therefore, don’t just go by the capacity, but take into account other factors as well. RAM greater than 3 GB is the standard today, we strongly advise against buying a device that is less than 2 GB. .
Phones with a capacity lower than 2 GB of RAM would not bring you smooth operation, but rather smooth suffering, and even this capacity is no terno. Today’s mid-range smartphones have an operating memory between 4 and 6 GB of RAM, which is a capacity that should be enough for most users without any problems.
The phone’s processor is an absolutely fundamental component of its performance. It affects its normal operation, ensures the trouble-free operation of applications, and its frequency determines the speed of the phone’s reactions. The frequency of the processor is given in gigahertz (GHz), translating into billions of operations per second. In general, the higher the frequency and the greater the number of cores, the more powerful the processor.
In very layman’s terms, it can be said that if the phone is processing something, it will divide the processing between the individual cores and thereby speed up its execution. Unlike computers, this applies to the vast majority of applications. However, a higher number of processor cores does not necessarily mean the lightning performance of your mobile device, you need to take into account the manufacturer of the processor and its exact type. At the time of writing (October 2020), the fastest processor in the world was the Qualcomm 865+ with a processor frequency of over 3 GHz, however the most powerful was the Apple A12Z with a frequency of around 2.4 GHz. To compare the performance of processors, you can use the website Versus.com , for example .
When choosing a processor, it depends a lot on the other specifications of the phone, because different phones need different processor capacity for their basic operation. It is therefore very difficult to formulate the ideal ratio of the correct performance and the number of cores, it is always necessary to directly verify the given model and find out how the processor in it is able to react to different situations. In general, the AnTuTu website can be used for a simple performance comparison .
Previously, a high-quality camera was the privilege of only the most expensive phones and was considered a kind of superior equipment. Nowadays, on the other hand, a good camera is considered an essential part of smartphones. Camera resolution is expressed in megapixels. The quality of the photos is mainly ensured by precise optics and a powerful sensor, which does not necessarily have a high number of megapixels.
A valid comparison of the ability to take pictures is offered by the DXOMARK website and reviews comparing photos from different devices. So you should not only be interested in the number of megapixels, but also in the size of the lens, the quality of the sensor, and you should also pay attention to the quality of the flash. More expensive devices also have optical stabilization and a movable aperture. These functions are very important for photography and filming.
An example of the difference in megapixels
Most devices have multiple cameras, as a rule at least 2, most often 4. Each of these cameras represents a different function due to the different focal length. There is usually a basic camera with high resolution, a telephoto lens with a long focal length for taking distant objects or macro photos, a wide-angle lens for taking photos of architecture, nature and sports, and a special 4th sensor that provides depth of field (it senses the distance differences between the background and the subject) object and thus allows the background to be blurred).
Unfortunately, their size is often not indicated by the manufacturer, but it is important to at least state that larger sensor dimensions mean higher quality of the photos taken. Really good sensors start at around 1/2.00″, in October 2020 the largest sensor in a smartphone was 1/1.33″, which is still more than 4x smaller chip than in an ASP-C camera. So definitely don’t expect better quality photos from a photomobile than from a camera.
Current smartphones offer their users a flash in the form of an LED diode, which does not offer as strong a light as a camera flash, but thanks to its characteristics, it can also be used for lighting as a flashlight. It is also possible to purchase external flashes that can be connected to the mobile phone.
In general, it can be said that average mobile cameras, with which it is possible to take photos in basic quality, are currently around 12 Mpx, below this limit there are mostly cameras of very low quality. If you are looking for really high-quality photos, you should therefore choose a camera with a quality of 24 Mpx and higher. The exception to the rule are iPhone phones, which, thanks to high-quality optics and a chip, achieve exceptional photo quality even with 12 MPx. Don’t forget the front camera, which allows you to take selfies, which are very popular today, or make video calls.
|It can only be found on the cheapest smartphones, complications may arise when installing just a few applications.
||It is the minimum threshold for using the phone for multimedia entertainment purposes. This storage can be considered the lower limit you should insist on.
||It offers a decent base for storing photos taken, music and applications.
User memory, as already described above, actually expresses the storage capacity of your mobile phone. Installed applications, downloaded files, taken photos or music, as well as the operating system, are stored in this memory. Memory capacity is expressed in gigabytes (GB) and more GB means greater storage capacity (Source: Spožebitelov.cz ).
Cell phones with a storage capacity below 4 GB are quite a rarity on today’s market, and we generally recommend sticking to at least 8 GB when choosing the lower limit. It should be remembered that phone manufacturers often add their applications to it from the start, so even before the first start of the phone, in the case of a small storage, you may have a substantial part of it occupied. If you intend to use the phone as a multimedia device, choose a storage size of at least 16 GB, but preferably 32 GB or more. The best mobile phones also offer an almost inexhaustible capacity of 256 GB for the average user.
At this point, it should be mentioned that some phones (for example, Apple products) do not offer the option of expanding the internal memory with a memory card. Therefore, if the phone you have chosen does not offer a large storage capacity, and moreover it is not possible to expand it with one of the memory cards, carefully consider whether the investment in it is really worth it.
The situation is a little different in the case of push-button phones with no or low-performance cameras. There is no need to give almost any weight to the size of the user’s memory here, and 4 GB of memory is more than enough.
Battery capacity is defined by the number of milliamp hours (mAh). More mAh generally means longer battery life, but two devices with the same battery capacity and other different equipment can have completely different battery life. It mainly depends on the energy that your phone consumes. This is influenced, for example, by the size and type of display or the efficiency of individual software and hardware components (primarily the processor).
Choice of battery capacity
It is basically impossible to determine the correct battery capacity, most models today offer a capacity of around 4,000 mAh, but you can also find batteries with a capacity of over 6,000 mAh in phones with high consumption. Batteries with a capacity below 2,500 mAh should now only be offered in models with minimal consumption, and you should carefully consider their choice. The exception is push-button telephones, which have an order of magnitude lower consumption thanks to their low performance and small display. A 1,500 mAh push-button phone will have significantly more battery life than a 4,000 mAh smartphone.
The problem with some smartphones is that the battery does not last very long in operation. Which can be a problem if you’re away from a place with an electrical outlet for an extended period of time. For these cases, it is useful to have a power bank or solar charger with you, thanks to which you can charge your phone even without an electricity connection. Most devices, however, have a battery saving mode, and by limiting the performance, you are able to reach five times the battery life at once.
The QuickCharge function can also make life much easier. Some smartphones can thus be recharged within an hour. The charging speed is defined in watts (W), a higher number means a faster charging speed. The normal value of fast charging is 15 W, exceptionally it reaches up to 65 W (as of October 2020). For the year 2021, the first phones supporting chargers with a power of over 100 W are planned to be launched. In practice, this will mean the possibility of recharging the battery in less than 15 minutes.
Quite often, in connection with smartphones, there is a mistaken assumption that the plastic construction is of poor quality and is only associated with phones of the lowest price category. However, this statement is far from generally valid and true. It is true that plastic is a significantly cheaper material than the others used, but it offers a comfortable hold on the phone and resistance to scratches and falls.
Similarly, the metal is also resistant to falls, but the resistance to scratches and visible fingerprints is somewhat neglected. The last frequently used material is glass, which is the prerogative of more expensive models. It looks elegant, but its practicality is quite low. It is easily damaged when dropped and fingerprints stick to it, which is also undesirable. Metal and glass phones also slide more in the hand.
In principle, it is impossible to state which of the materials is associated with a higher or lower price category, because each user is comfortable with a different material, and manufacturers act accordingly, and even on phones in a higher price category, they apply a plastic construction for greater practicality.
From an aesthetic point of view, the version with a transparent back is a new and rather interesting design option. With such phones, internal components that are otherwise hidden can be seen from the back.
||Durability, good hold
||Not very elegant appearance
||Elegant design, wireless charging option
||Visible fingerprints, risk of damage if dropped
||Solid material, elegant design
||Lower comfort when holding the phone
They are basically divided into durable phones and waterproof phones. The main difference is that while durable phones are defined at first sight by a more massive construction that survives even a fall or impact, the waterproof ones are indistinguishable from regular smartphones. The durability of constructions is expressed by the IP standard, which measures the ability to resist the penetration of dust and water into the phone under precisely given conditions (Source: Engineering Testing Institute ).
On the other hand, protection against falling and other parameters are governed by military standards MIL-STD-810. Even phones that meet these standards are not only associated with the highest price class, as the lay public sometimes mistakenly believes. Often decently functioning durable phones are already available in the middle price range. For example, if you are worried about operating your phone in harsh working conditions, a durable construction may be the ideal solution for you. Water resistance, in turn, ensures the possibility of safe use in the rain, or even underwater photography. If you are more interested in waterproof construction, we recommend reviews of waterproof phones on Vybero.cz.
A big advantage when choosing a new smartphone is the possibility to check its qualities based on available user reviews, which focus on its strengths and weaknesses. As it was already said in the previous chapters, it is not a problem to find, for example, pictures taken from the camera of the selected phone on the Internet and very easily get an idea of the real qualities of this device.
Unfortunately, as with most multimedia devices, it is true for mobile phones that nice parameters do not always mean top performance, for example due to poor compatibility of individual components. Therefore, we strongly recommend that you take into account the experiences of customers who have already purchased a smartphone and can give you very good feedback before making a choice.
This chapter discusses some minor but still very important concepts that can significantly affect your choice of new mobile phone.
When choosing a phone, you should definitely consider its ability to connect to mobile networks. You currently have a choice of 4 types of mobile networks.
3G : 3G connection was still available in October 2020, but it is expected to be switched off in 2021. Therefore, we do not recommend buying a device that only allows connection to the 3G network.
4G : This network will offer you the possibility of a fast data connection. 4G networks are sometimes mistakenly confused with the term LTE. At the time of writing (October 2020), 4G and LTE network availability was standard.
5G : In 2020, the gradual launch of the 5G network in the Czech Republic began. At the end of the year, this network was available to a limited extent, especially in large cities. Compared to the 4G network, it offers a multiple increase in transmission speed.
LTE: It doesn’t reach 4G speeds, so it’s really just a sort of intermediate sometimes also referred to as 3.5G. So don’t be fooled by the marketing ploys that put the two technologies on the same level. However, sometimes LTE can also be a 4G network.
Interesting fact: Did you know that the SIM card, unlike the SD card, is not a storage device, but a microcomputer with its own processor?
The classic SIM card size that you are probably used to from older phone models is no longer used in new smartphones. Currently, phones are manufactured that support micro-SIM or nano-SIM. Both formats are miniatures of the original classic SIM cards. If these concepts are unfamiliar to you, don’t worry. Most Czech mobile operators offer either free cutting of the SIM card to the required format, or its complete exchange for a new one in the correct size.
In connection with the issue of SIM cards, it is also worth mentioning that many of today’s models have a dual SIM function, which allows multiple SIM cards to be connected to one phone at the same time. You can use this option, for example, if you have one card for data transfer purposes and another for classic voice services, or if you need to use the services of several operators at the same time for work reasons.
The possibility of using the so-called eSIM card is gradually being introduced. If your device supports this standard, you can use the SIM card even without the need to physically insert it into the device. The eSIM card is only a virtual matter and is gradually starting to gain traction in the Czech Republic as well. The advantage of this design is the possibility of placement even in very small devices, such as smart watches.
Phone sensors are sensors that enable additional functions of the phone. They are often neglected when choosing new smartphones, but their role can be crucial.
Gravity sensor : This sensor is an absolute staple in all smartphones and ensures their ability to rotate the screen according to movement and process external movements.
Gyroscope : Provides a more accurate measurement of movement than the gravity sensor and is essential for controlling the phone with motion gestures (shake) and playing games.
Proximity sensor : Enables automatic display locking when approaching an object. It is mainly used for the purpose of locking the screen when brought close to the ear, so as not to end the call with the ear.
Time of Flight sensor : Measures the distance from obstacles using an IR signal. The equipment they have provides the ability to better estimate the depth of field when taking pictures.
Light sensor : Allows you to automatically reduce and increase the brightness of the display according to the surrounding environment. If you are in a dark environment, the brightness of the display is automatically reduced and vice versa.
Fingerprint sensor : These sensors are the domain of smartphones in higher price classes and are mainly used for their security. It is usually located either on the front of the smartphone and its home button “Home Button” or on the back cover, and after setting it is possible to lock the phone instead of the security code just by reading the fingerprint.
Other sensors : Other sensors are also widely used and offer new possibilities and services. These sensors include, for example, a hygrometer, barometer (atmospheric pressure sensor), pedometer, digital compass (magnetic sensor).
GPS navigation and others are part of most mobile devices. Almost all mobile phones have the ability to operate navigation, as long as the phone is connected to the Internet. However, this method of navigation is not nearly as accurate and reliable as a real GPS. Therefore, when choosing, you should look for a phone that has a built-in GPS module, so you will not need a connection in data mode for possible navigation.
Thanks to the size of the displays, high-quality speakers and convenient operation, the navigation contained in mobile phones today can be considered a full-fledged replacement for the separate ones, and therefore, if you want GPS, definitely insist on it being part of your mobile phone, because this will save you a substantial investment for another device. But why do manufacturers allow connection to several navigation systems at the same time? The reason for this is the ability to more precisely determine the location based on the acquisition of data from multiple sources.
In 2020, there were already 4 navigation systems available, each falling under a different nation or establishment. Below you can find a list of them.
GPS – It is the longest available publicly available navigation option for ordinary users. The advantage is its availability on almost all devices, the disadvantage is lower accuracy and speed of location determination. The system is managed by the US military, so it is not guaranteed.
GLONASS – The Russian navigation system is also available worldwide, compared to other systems it provides the lowest accuracy.
Galileo – It is the European navigation system that is the only one that is completely under civilian administration. The administrative seat of the command is in the Czech Republic. It offers the highest accuracy of any existing navigation system (as of October 2020).
Other systems – Some large and economically strong countries build their own navigation systems, but they are usually only local. These are, for example, BeiDou (China), NavIC (India) and QZSS (Japan)
||Accuracy in the civil sector
||about 3.6 meters
||approx. 4.5 – 7.4 meters
||approx. 1 meter
Today almost every smartphone on the market offers you a connection to a Wi-Fi network. Differences can be found between individual Wi-Fi versions. Currently, Wi-Fi 5 (or 802.11ac) with a maximum transmission speed of 165 MBps is common. In 2020, the new Wi-Fi 6 (802.11ax), which offers up to 10x higher transmission speed, is gradually being introduced. If you need to transfer large volumes of data, it is better to choose the 802.11ax standard.
Just like the Wi-Fi technology mentioned above, Bluetooth is also a part of every smartphone. Through this technology, you can transfer data between devices for free, or connect your phone to external devices. The latest and fastest Bluetooth technology is v5.0, but older versions (such as 4.2) will do just fine for general purposes.
It is a technology that works on a similar basis to the aforementioned Bluetooth. It is also a wireless data transfer system from one device to another. However, NFC is significantly more gentle on battery drain and has a high data transfer rate. NFC also enables the use of a mobile phone or smart watch as a substitute for a payment card. It is also possible to quickly connect some devices, such as wireless headphones, to a smartphone by simply touching them using NFC. Therefore, if you are going to buy a smartphone in a higher price category, NFC technology should be available to you.
It is also used to transfer data between two devices, but recently it has been on the decline due to the convenience of the aforementioned technologies, which offer greater comfort. The infrared transmission that the Infraport uses is significantly slower, requires both devices to point at each other, and only works over a very short distance. The advantage is the possibility of using it as a replacement for the remote control of some appliances, especially televisions.
In recent years, the mobile phone segment has become quite turbulent, while decades of established manufacturers have come to an end, a number of new ones are entering the market with interesting gadgets and technologies. After many years, for example, the traditional LG ceased production, due to sanctions reflecting possible security risks, Huawei ceased to be interesting in Europe, and Nokia left the premium phone market. We will analyze the most interesting brands in more detail below.
The South Korean brand Samsung is the largest supplier of smartphones in the world. Although it traditionally fights for its place with Apple and Xiaomi, most of the time it is a few percent higher in sales. It owes its leadership both to a number of innovations and to its own production of processors and camera sensors.
Samsung specializes rather in the middle class, and products for the most demanding, at low price levels, do not offer a very good price-performance ratio. You can choose between the Galaxy M, A, XCover and S series. Each has its own specifics, which we cover in more detail in the article What are Samsung mobile phones .
Samsung phones work with the Android operating system, but a rather massive but well-tuned OneUI superstructure is added on top of it. Like Apple, developers are betting on wider collaboration within the same ecosystem. You can therefore fully use, for example, a Samsung smart watch only with a mobile phone of the same company.
The traditional American manufacturer was the first to bring to the world and mass spread the smartphone as we know it today. The Android operating system did not exist then, so phones are handled by the iOS system. Apple releases a new iPhone, as it calls its mobile phones, every year. It specializes only in expensive, but also perfectly tuned and quality-made devices.
You can expect a perfectly working system without jams, wide compatibility within the ecosystem of different Apple devices, beautiful photos and video. But what you won’t see are bigger innovations. The manufacturer is in no hurry to replace components, rather competition comes with new technologies.
Compatibility with other systems is also tragic. It is therefore not recommended to buy an iPhone for users working with Windows or Linux. We compared the company’s phones on a separate page .
The company based in Beijing (China) introduced its first smartphone, the Mi1, only in 2011. It is by far the youngest of the big three, which together hold most of the market (Samsung, Apple, Xiaomi). The brand earned its place with an extreme pace of innovation, a very favorable price and excellent marketing.
The Chinese brand thus became a “lovebrand” to some extent. The manufacturer focuses on all price levels, from the cheapest to premium devices for tens of thousands of crowns. The Poco brand also belongs to the same manufacturer. We covered the brand in more detail in the article What are Xiaomi phones ?
As was said in the beginning, the price is a very important factor that will directly influence your decision. If you only have limited price options, don’t expect an all-around high-performance device. In the following summary, we will compare phones and their parameters according to individual price categories.
Frequently asked questions about mobile phones
How and what to choose a mobile phone?
It is absolutely essential for a considered choice to determine right from the start what you expect from the phone. If you’re looking for a construction phone, you’re probably better off with one of the rugged phones. On the other hand, more expensive touch models are suitable for gamers, lovers of photography, filming or social networks. On the other hand, push-button telephones with simple controls and a button with an SOS function may suit seniors better. You can find the best mobile phones in our comparison .
In which category to search for a mobile phone?
Choosing the right model is a purely individual matter. For ordinary users, the most suitable category will probably be the one with a price of up to CZK 10,000. Users working in demanding conditions will be most interested in drop-resistant phones. Phones for seniors are proud of their simpler controls adapted to older generations. The stars of social networks, as well as photography and video lovers, will be interested in photomobiles. Mobile phones with a price of up to CZK 15,000 are intended for avid gamers. Demanding users can find themselves among iPhones, mobile phones over CZK 15,000 or flexible phones. Less demanding users will be satisfied with a device priced below CZK 5,000.
What materials are smartphones made of?
In the lower price ranges, you will most often come across a plastic version, or in combination with a metal frame. The higher you search above 5,000 CZK, the more likely you will come across a device with a glass back embedded in a metal frame. Both solutions have their advantages. Plastic is more resistant to falling, phones are lighter and hold better. The glass back feels more luxurious, not very drop resistant, but allows for wireless charging.
What is the difference between LTE and 5G connections?
In general, an LTE connection is a designation for a 3.5G or 4G connection. This enables a maximum real transfer speed of around 12.5 megabytes per second (MB/s). In contrast, the new 5G standard enables a speed 10 times higher. In practice, this means that what you would download on 4G LTE for 40 minutes will take less than a minute on the 5G network. The 5G network was gradually launched in the Czech Republic in 2020.
What was the best mobile of 2021?
At the end of 2021, Apple released its iPhone 13 Pro Max , which turned out to be the best phone of 2021 in many ways. For the first time, the manufacturer really won with its battery life, but also with performance. Series 13 also brought Cinematic mode with a blurred background when shooting video and overall excellent cameras. If we were to focus on a narrow category, such as photography only, or performance only, we would find better alternatives. But Apple products won out with their overall versatility.
What are the TOP phones of 2022?
In 2022, the cards are already being shuffled a bit more. Samsung offers the Galaxy S22 Ultra model with a stylus in the body, the brightest display in the world and an ultrazoom camera, while the Honor Magic4 Ultimate won the DXOMark tests and is the best camera phone. In terms of price and versatile equipment in the premium class, we can easily call the Google Pixel 6 Pro the best.
But at the beginning of 2022, the release of the highest model of the 12th series of Xiaomi, which could come with a 200 megapixel sensor, similar to LiDAR from the iPhone and the most powerful processor, was still awaited.
Tested dTest smartphones?
At dTest, they provide long-term smartphone testing. At the same time, they focus on the quality of the display, performance, speakers and cameras. However, there are more detailed tests that we draw on in our comparisons.