A Network Radio
Network Radios are a relatively new type of 2-way PTT (Push To Talk) Radio Communications Equipment that make use of existing electronic components, RF modules, touch screens and sub assemblies mass manufactured for the mobile telephone industry. These parts are used to create many styles of handheld, portable and 'in car' devices that feature built in PTT buttons and/or external plug in microphones with a PTT switch.
Most currently available Network Radios use the Android Operating System allowing easy installation and use of many Android Applications including 2-way simplex communications APPs such as Zello PTT that provides users with easy to operate Global simplex communications. Most network radios can also be used with Bluetooth headsets, speaker mics, headsets, media buttons, keyboards, mice and other peripherals.
There are growing numbers of unlicensed radio enthusiasts, licensed amateur radio operators and business users making good use of network radio equipment to communicate around the world.
Although You will hear some people stating that network radios are 'not real radio' or 'not using RF' they are indeed mistaken.
It is correct to state that Network Radios are 'not HAM radios' as they do not operate on frequencies allocated for licensed amateur operation and fall outside the scope of Amateur Radio licensing but they are real radio communications devices that do use RF.
Network radios are effectively classed as 'license exempt radio communications equipment' The end user does not require a license to operate these devices on mobile networks or WiFi connections as the bands of radio spectrum used for mobile network communications are licensed by the network infrastructure owners/network operators and WiFi connections use licence exempt 'ISM band' frequencies.