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The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation digital cellular networks used by mobile devices such as mobile phones and tablets.
An interesting special case of multi-mode phones is the WCDMA/GSM phone. The radio interfaces are very different from each other, but mobile to core network messaging has strong similarities, meaning that software sharing is quite easy. Probably more importantly, the WCDMA air interface has been designed with GSM compatibility in mind.
An ultra mobile PC is a full-featured, PDA-sized computer running a general-purpose operating system. Phones, tablets: a slate tablet is shaped like a paper notebook. Smartphones are the same devices as tablets, however, the only difference with smartphones is that they are much smaller and pocketable.
The Operating System (OS) is the program that manages all applications in a computer and is often considered the most important software. In order for a computer to run, applications make requests to the OS through an application programming interface (API), [ 10 ] and users are able to interact with the OS through a command line or graphical ...
In order to facilitate the development of applications for mobile devices, and the consistency thereof, various approaches have been taken. Most companies that ship a product (e.g. Apple, iPod/iPhone/iPad) provide an official software development kit (SDK).
Most GSM networks have a wide range of modified processors, but GPRS activation from the network is not generally supported, so WAP Push messages have to be delivered on top of the SMS bearer. On receiving a WAP Push, a WAP 1.2 (or later) -enabled handset will automatically give the user the option to access the WAP content.
Mobile/desktop convergence: the Librem 5 open-source mobile, when connected to a keyboard, screen, and mouse, runs as a desktop computer. This is a list of mobile phones with open-source operating systems .
GSM services are a standard collection of applications and features available over the Global System for Mobile Communications (GSM) to mobile phone subscribers all over the world. The GSM standards are defined by the 3GPP collaboration and implemented in hardware and software by equipment manufacturers and mobile phone operators .