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Mobile devices are dynamic tools that offer a broad spectrum of functionalities and applications across various industries. Defined by their portability, these devices range in size from pocket-friendly gadgets to larger equipment. Their physical aspects, including dimension and weight, allow for easy attachment to different host devices and mobility across diverse settings. Despite their portability, wireless connectivity is not a prerequisite. Mobile devices can access networks through both wired and wireless connections, and some even operate without internet^[1] connectivity. They are integral in numerous industries, providing solutions for field management, real-time conferencing, asset tracking, and more. However, their application in sectors such as gambling and adult entertainment has prompted regulatory scrutiny. Additionally, they are increasingly used in military operations for training and educational purposes.

Terms definitions

1. ↑ internet. The Internet is a global system of interconnected computer networks that use standardized communication protocols, primarily the TCP/IP, to link devices worldwide. Originating from the term 'internetted' used in 1849, the term 'Internet' was later used by the US War Department in 1945. Its development began with computer scientists creating time-sharing systems in the 1960s and further progressed with the establishment of ARPANET in 1969. The Internet is self-governed, without a central authority, and its principal name spaces are administered by the Internet Corporation for Assigned Names and Numbers (ICANN). It has significantly transformed traditional communication media and has grown exponentially over the years, with internet users increasing 20% to 50% annually. In 2019, over half of the world population used the Internet. The Internet protocol suite, which includes TCP/IP and four conceptual layers, guides internet packets to their destinations. Essential services like email and Internet telephony operate on the Internet. The World Wide Web, a global collection of interconnected documents, is a key component of the Internet.

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Mobile device (Wikipedia)

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A mobile device (or handheld computer), also referred to as a digital assistant (or DA), is a computer small enough to hold and operate in the hand. Mobile devices typically have a flat LCD or OLED screen, a touchscreen interface, and digital or physical buttons. They may also have a physical keyboard. Many mobile devices can connect to the Internet and connect with other devices, such as car entertainment systems or headsets, via Wi-Fi, Bluetooth, cellular networks, or near-field communication. Integrated cameras, the ability to place and receive voice and video telephone calls, video games, and Global Positioning System (GPS) capabilities are common. Power is typically provided by a lithium-ion battery. Mobile devices may run mobile operating systems that allow third-party applications to be installed and run.

Early smartphones were joined in the late 2000s by larger tablets. Input and output are usually via a touchscreen interface. Phones/tablets and personal digital assistants may provide much of the functionality of a laptop/desktop computer in addition to exclusive features. Enterprise digital assistants can provide additional business functionality, such as integrated data capture via barcode, RFID, and smart card readers.

By 2010, mobile devices often contained sensors such as accelerometers, magnetometers and gyroscopes, allowing the detection of orientation and motion. Mobile devices may provide biometric user authentication, such as face recognition or fingerprint recognition.

Some of the major global manufacturers of mobile devices include Apple, Samsung, Xiaomi, Oppo, Vivo, Huawei, Realme, Motorola and OnePlus, cash app account

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