All about the smartphone – what is it and how does it work?

Our lives have been revolutionized by the advent of smartphones. These versatile devices have become an essential part of our daily routine, enabling us to stay connected with others and unleashing our creative potential. In this comprehensive article, we will delve into every aspect of smartphones that every novice user should be aware of – their inception, functionality, and practical applications.

LG, the smartphones company, has a rich history in the development of smartphone technology. In the 1990s, after the creation of the pocket personal computer, the idea of inventing a smartphone began to take shape. It was IBM who first combined the functionalities of a communicator and a cell phone, resulting in the creation of the first smartphone. The IBM Simon, with its built-in organizer, was the first phone to be released as a concept. Over the next few years, other manufacturers also entered the smartphone market with their own devices, such as the OmniGo HP 700 LX, Nokia 2110, and Nokia 9000, each bringing them closer to the ultimate goal of creating the perfect smartphone.

Here is an exclusive picture of the Nokia 9000.

The term "smartphone" made its debut when Sony Ericsson introduced the R380S phone, which was quite compact and handy. However, this device operated on the Symbian 5.1 OS, which did not support software development. Hence, the credit for inventing the smartphone cannot be attributed to a single company, as it was a collective effort.

What is a smartphone

According to the information provided by Wikipedia, the term "smart" is synonymous with "intelligent" or "savvy" in the English language. The concept behind the word "smartphone" is quite straightforward – it refers to a phone that possesses advanced capabilities beyond just making calls.

How a smartphone differs from a cell phone

In the realm of cell phones, dating back to their early inception, there were built-in features that served as organizers (such as alarm clocks, note-taking capabilities, and calendars). However, manufacturers sought to amplify these functionalities. This gave rise to the term "smartphone," a compound word formed by integrating two others: "smart" and "background."

As opposed to traditional cell phones, smartphones possess a more sophisticated operating system (such as Android, iOS, or Windows), which enables developers to write program code and execute fresh ideas. By installing third-party software, the device’s capabilities expand even further.

The operating systems Android, Windows, and iOS have made the distinction between a regular phone and a smartphone obsolete. Nowadays, the majority of devices, excluding the most budget-friendly options, provide internet access, email functionality, and other essential features.

What a smartphone is for

Smartphones offer a wide range of features beyond basic calling capabilities, surpassing those of traditional cell phones. These capabilities extend far beyond simple communication. This device enables users to browse the web, utilize GPS navigation, engage in social networking, facilitate interactive learning, access e-books, capture stunning photographs, participate in educational video games for children, and even conduct video editing. Moreover, this versatile mobile gadget can track your physical activity, including step counting and blood pressure monitoring. It can enhance various sports activities such as running, walking, and even jumping rope.

The possibilities and functionalities of this device are boundless, limited only by the user’s creativity and the assortment of installed applications. Furthermore, users can always expand the functionality of their smartphones by downloading new applications from the ever-growing app store, which constantly introduces fresh software.

How the smartphone is organized

Maybe when you first got your hands on a new smartphone, you might have wondered what it is made of. There are various variations, but every device has the same basic elements. In the following paragraphs, we will take a closer look at each component.

Body

The device enclosure serves to protect the internal components and main elements of the device from damage, ensuring a safer and more durable experience for the user.

It consists of buttons, a touch glass for easy phone control, and designated ports for connecting headphones and chargers, providing convenience and accessibility.

Various materials such as glass, ceramic, metal, and plastic are utilized in the manufacture of the enclosure, allowing for a wide range of options and styles to suit different preferences.

There are several types of cases available in the market. The monoblock case, for instance, features a solid structure without any moving parts, ensuring stability and durability. On the other hand, the slider case allows for easy access to the device by sliding it open or closed. Similarly, the folding case offers a compact and convenient design that can be easily folded and unfolded. Finally, the bendable case, although still in the developmental stage, presents a promising future with its elastic and flexible elements. However, due to the high cost involved in creating such technology, it is not yet commonly available.

Processor and motherboard

Utilizing a motherboard fortified with a processor (System on a Chip), the device becomes operational. The circuit board houses not only the processor but also crucial components such as a charge controller, LTE modem, Bluetooth, Wi-Fi, and a graphic accelerator.

Various prominent manufacturers design their own processors, serving as the foundation for the majority of smartphones, including MediaTek, Qualcomm, Samsung, Huawei, and Apple.

This is the internal view of a smartphone.

RAM and main memory

RAM, short for Random Access Memory, is a type of volatile memory utilized by operating systems like Android to temporarily store and process data. Its involvement is crucial for facilitating faster processes, calculations, and enabling multitasking. Different generations of RAM, such as LPDDR3, LPDDR4, LPDDR4X, and LPDDR5, offer improved performance compared to their predecessors. As of now, mobile devices come with RAM capacities ranging from 1GB to 16GB.

In contrast, the primary memory, unlike RAM, is designed for long-term data storage. It houses the firmware, operating system, system programs, as well as allows storage for videos, games, music, images, and documents.

Devices offering internal storage range from 16GB to 2TB. In case the PCB’s solid-state drive falls short, there is an option to insert a microSD card into the designated port. This will expand the device’s storage capacity, enabling it to accommodate more data.

Battery

Your mobile device utilizes an internal battery as its portable power supply. This battery can either be removable or non-removable, depending on the specific model of the device. The majority of mobile devices are equipped with lithium-ion batteries, which are easy to use, do not experience any memory effect, and do not require any calibration. Once the battery is fully charged, it automatically ceases to receive any additional charge from the charger.

Smartphone battery.

Sensors and modules

To ensure proper functioning of the mobile device, a suitable array of sensors and modules is necessary. The device comprises:

• Microphones: A majority of the devices have two microphones to enable stereo sound recording.
• Two speakers: One for communication purposes and the other for playing multimedia files.
• Main and front camera: Required for capturing photos and videos. The front camera also serves for taking selfies and making video calls.
• Wireless modules: Wi-Fi, LTE, Bluetooth, IrDA, GPS, NFC, and wireless charging.
• Hola sensor, accelerometer, thermal sensors, pedometer, as well as proximity and light sensors.

All the modules and sensors are linked with the motherboard, and they function through the processing capabilities of the CPU. By utilizing supplementary software, it becomes possible to manipulate them and expand the device’s functionality significantly.

Display

One of the crucial elements necessary for the functionality of a mobile device is the screen. The screen is responsible for displaying all the information that the user sees, and it relies on internal components to process this data. Mobile phones can be equipped with two different types of screens:

• AMOLED and Super AMOLED screens operate using LEDs.
• IPS, PLS, and TFT screens operate based on liquid crystals.

LED backlighting forms the foundation of all liquid crystal displays. The liquid crystals act as filters that modify the color of the white light passing through them.

However, AMOLED displays function in a different manner. Each pixel in an AMOLED display acts as an individual LED that can emit its own light. This design makes AMOLED screens more energy-efficient since the pixels that are not in use do not consume battery power. On the other hand, screens based on liquid crystals are more cost-effective, which makes them the preferred choice for budget devices.

Principle of operation

The mobile processor is responsible for processing the data it receives from the RAM and internal storage. To enable wireless connectivity, the smartphone utilizes specific modules, while additional sensors are incorporated for user-friendly interaction. The battery, on the other hand, can be charged using a charger and serves as the primary power source.

While technically not essential, the camera has become an integral feature of modern smartphones, as it allows users to capture images. The essential components are housed within the phone’s body, while the front panel is equipped with a touchscreen display that facilitates input and retrieval of required information.