Size of the display for this product, measured diagonally, usually in inches.

Type of display (screen) e.g. LCD.

Resolution of the display for the system

A family of processors is a group of processors produced by one company over a short period of time e.g. Intel Pentium processors.

The model number for the processor in a computer.

The number of central processing units ('cores') in a processor. Some processors have 1 core, others have 2 (e.g. Intel Core Duo) or more (e.g. the Intel Xeon E7-2850 has 10 cores).

The amount e.g of data which can be stored inside the device.

Types of memory cards which can be used with this product.

The maximum size of memory card that can be used with this device.

The resolution of the images produced with the rear camera, given in MP (megapixel. 1 MP = 1 million pixels).

Indicates the digital zoom capacity, the number of times that the picture is enlarged thanks to digital technology.

Indicates the type of the camera at the front of the product, dual or single.

Whether or not the rear camera features its own flash.

This is the maximum frame rate, also known as frame frequency and frames per second (FPS). It is the frequency (rate) at which an imaging device produces unique consecutive images called frames. The term applies equally well to film and video cameras, computer graphics, and motion capture systems. Frame rate is most often expressed in frames per second (FPS) and is also expressed in progressive scan monitors as hertz (Hz).

Indicates the type of the camera at the back of the product, dual or single.

Device focusing a camera or other piece of equipment automatically.

How many SIM cards the device can hold.

Popular technology that allows an electronic device to exchange data or connect to the internet wirelessly using radio waves.

The type of wireless local area network (LAN): ad-hoc (where units in a network communicate peer-to-peer) or Infrastructure (units communicate with each other via an access point). A LAN interconnects computers in a small area e.g. home, school or office.

Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers, and a wide variety of handheld devices including mobile phones. Because it uses radio-wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for emails or news updates, for example.

The type of bluetooth technology in the product e.g. Bluetooth Smart (v4.0).

Modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal (High Frequency Signal), with a modulating signal which typically contains information to be transmitted. The aim of digital modulation is to transfer a digital bit stream over an analog bandpass channel, for example over the public switched telephone network (where a bandpass filter limits the frequency range to between 300 and 3400 Hz), or over a limited radio frequency band. The aim of analog modulation is to transfer an analog baseband (or lowpass) signal, for example an audio signal or TV signal, over an analog bandpass channel at a different frequency, for example over a limited radio frequency band or a cable TV network channel.

The type of cellular connection subscription.

The device features a socket into which a USB cable can be plugged.

The type of USB connector/port that this product has.

Universal Serial Bus (USB) is an industry standard developed in the mid-1990s that defines the interface used for connection, communication and power supply between computers and electronic devices. Every new version - for example 1.1, 2.0, 3.0 - is much faster than the previous one.

How headphones connect to a device e.g. wirelessly or via a cable and connector.

Multimedia Messaging Service (MMS) is a standard way to send messages that include multimedia content to and from a mobile phone over a cellular network

The format is determined by shape, size, presentation and medium.

The colour e.g. red, blue, green, black, white.

The IP code classifies and rates the degree of protection provided against the intrusion (including body parts such as hands and fingers), dust, accidental contact, and water by mechanical casings and electrical enclosures. It is published by the International Electrotechnical Commission (IEC). The digits (characteristic numerals) indicate conformity with the conditions summarized in the tables below. Where there is no protection rating with regard to one of the criteria, the digit is replaced with the letter X. an electrical socket rated IP22 is protected against insertion of fingers and will not be damaged or become unsafe during a specified test in which it is exposed to vertically or nearly vertically dripping water. Another example is the Sony Xperia Z Ultra, one of the first cellular phones to be IP-rated; it is rated at IP58 and marketed as "dust resistant" and can be "immersed in 1.5 meter of freshwater for up to 30 minutes".

Physical effects from which the product is protected e.g. water resistant, crash proof.

A scanner used to identify a person's fingerprint for security purposes. After a sample is taken, access to a computer or other system is granted if the fingerprint matches the stored sample. A PIN may also be used with the fingerprint sample.

Global Positioning System (GPS) is a space-based satellite navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. The system provides critical capabilities to military, civil and commercial users around the world. It is maintained by the United States government and is freely accessible to anyone with a GPS receiver.

Whether the navigation system can locate the phone's position.

The audio formats which this device or software can read/use e.g. MP3, MP4.

The type of video formats that can be used by this device.

Description of a technology platform including a processor, chipset, platform software and wired networking capabilities

A measure of the charge stored by the battery. Determined by the mass of active material contained in the battery.

Number of hours on average for continuous play. This is dependent on the device battery capacity.

The measurement or extent of something from side to side.

The distance from the front to the back of something.

Height of the product

Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.