DISPLAY TYPES AND DEFINITIONS

What is Network Symbol G, E, 3G, H, H+ and 4G means :

G is for GPRS and is the slowest standard, it used is the GSM network (2G).
E is an extension of GPRS, it is called EDGE and it is correspondingly a little faster and uses the same old GSM network (2G).
3G stands for UMTS and it is the successor to the GSM network and faster (3G).
H and H+ are for HSPA and HSPA+ respectively. Both use the UMTS network, where H is faster than 3G and H+ is faster than H (3G+)
4G stands for LTE and is the fastest (4G).

What is Retina Display :

Retina Display (marketed by Apple with a stylized lowercase 'd' as Retina display) is a brand name used by Apple for liquid crystal displays that have a pixel density high enough that the human eye is unable to discern individual pixels at a typical viewing distance. The term is used for several Apple products, including the iPhone, iPod Touch, iPad, MacBook Pro, iPad Mini, and iPad Air.[1] Because the typical viewing distance is different, depending on each devices use, the pixels per inch claimed to be of Retina quality can differ, depending on the size of the display, with higher PPI for smaller displays and lower PPI for larger displays: 326 PPI for the smallest devices (iPhone, iPod Touch, and iPad Mini with Retina display), 264 PPI for mid-sized devices (iPad third generation and onwards, including iPad Air), and 220 PPI for larger devices (MacBook Pro). Click here for more details...

What is LED :

A light-emitting diode (LED) is a two-lead semiconductor light source that resembles a basic pn-junction diode, except that an LED also emits light.[7] When an LEDs anode lead has a voltage that is more positive than its cathode lead by approximately 0.6 to 2.2 Volts, current often flows and light is often emitted. On the other hand, when an LEDs anode lead has a voltage that is less positive than its cathode lead by approximately 0.6 to 2.2 Volts, current often does not flow and light is often not emitted. Click here for more details...

What is IPS Display :

IPS (In-plane switching) is a screen technology used for liquid crystal displays (LCDs). It was designed to solve the main limitations of the twisted nematic field effect (TN) matrix LCDs in the late 1980s, such as relatively high response time, strong viewing angle dependence and low-quality color reproduction. In-plane switching involves arranging and switching the molecules of the liquid crystal (LC) layer between the glass substrates. This is done in a plane parallel to these glass plates. Click here for more details...

What is LCD :

A liquid-crystal display (LCD) is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals. Liquid crystals do not emit light directly. Click here for more details...

What is TFT :

A thin-film transistor (TFT) is a special kind of field-effect transistor made by depositing thin films of an active semiconductor layer as well as the dielectric layer and metallic contacts over a supporting (but non-conducting) substrate. A common substrate is glass, because the primary application of TFTs is in liquid-crystal displays. This differs from the conventional transistor, where the semiconductor material typically is the substrate, such as a silicon wafer. Click here for more details...