Presented by Elmira Petrosyan

1.  Presented by Elmira Petrosyan

2.  The mobile phone or cell phone is a long-range, portable electronic device used for mobile communication. In addition to the standard voice function of a telephone, current mobile phones can support many additional services such as SMS for text messaging, email, packet switching for access to the Internet, and MMS for sending and receiving photos and video. Most current mobile phones connect to a cellular network of base stations (cell sites), which is in turn interconnected to the public switched telephone network (PSTN) 

3.  Various cell phones from the past 10–15 years.Legend:1. NEC Cellstar 500 series (1992)2. Nokia 2110 series (1994)3. Nokia 5120 (1998)4. Kyocera 2135 (2002)5. Audiovox CDM8300 (2002)6. Samsung SCH-A650 (2004)

4. In 1945, the zero generation (0G - radio telephone) of mobile telephones was introduced. 0G mobile telephones were not officially categorized as mobile phones, since they did not support the automatic change of channel frequency during calls, which allows the user to move from one cell (the base station coverage area) to another cell, a feature called "handover". The first commercial cellular network was launched in Japan by NTT in 1979. Fully automatic cellular networks were first introduced in the early 1980s (the 1G generation) with the Nordic Mobile Telephone (NMT) system in 1981. This was followed by a boom in mobile telephone usage, particularly in Northern Europe. 1G (or 1-G) is short for first-generation wireless telephone technology, cellphones. These are the analog cellphone standards. 1G networks use the radio (analog ) signals. The first "modern" network technology on digital 2G (second generation) cellular technology was launched in 1991 in Finland on the GSM standard which also marked the introduction of competition in mobile telecoms. A digital system is one that uses discrete values (often electrical voltages), representing numbers or non-numeric symbols such as letters or icons, for input, processing, transmission, storage, or display, rather than a continuous range of values ( as in an analog system).

5. A decade later, 3G (Third Generation) was again launched in Japan. Until the early 1990s, most mobile phones were too large to be carried in a jacket pocket, so they were typically installed in vehicles as car phones. With the miniaturization of digital components, mobile phones have become increasingly handy over the years. 3G typically provide service at 5-10 Mb per second.3G networks are wide area cellular telephone networks which evolved to incorporate high-speed internet access and video telephony. In December 2005, 100 3G networks were operating in 40 countries, according to the Global mobile Suppliers Association, in Asia, Europe, Canada and the USA 4G (also known as beyond 3G), an acronym for Fourth-Generation Communications System, is a term used to describe the next step in wireless communications. A 4G system will be able to provide a comprehensive IP solution where voice, data and streamed multimedia can be given to users on an "Anytime, Anywhere" basis, and at higher data rates than previous generations.

6. Iphones The iPhone is a multimedia, Internet-enabled mobile phone designed and marketed by Apple Inc. It has a multi-touch screen with virtual keyboard and buttons. The iPhone's functions include those of a camera phone and a portable media player ("iPod"), in addition to text messaging and visual voicemail. It also offers Internet services including e-mail, web browsing. It is a mobile phone that uses the GSM The iPhone was introduced, first in the United States on June 29, 2007

7. Manufacturers Nokia Corporation is currently the world's largest manufacturer of mobile telephones, with a global device market share of approximately 36% in 2007. Other mobile phone manufacturers include Apple Inc., Audiovox (now UT Starcom), Benefon, BenQ-Siemens, High Tech Computer Corporation (HTC), Fujitsu, Kyocera, LG Mobile, Mitsubishi, Motorola, NEC, Neonode, Panasonic, Pantech Curitel, Philips, Research In Motion, Sagem, Samsung, Sanyo, Sharp, Siemens, Sierra Wireless, SK Teletech, Sonim Technologies, Sony Ericsson, T&A Alcatel,Toshiba, and Verizon. There are also specialist communication systems related to (but distinct from) mobile phones. The mobile phone manufacturers can be grouped into two. The top five are available in practically all countries and comprise about 75% of all phones sold. A second tier of small manufacturers exists with phones mostly sold only in specific regions or for niche markets. The top five in order of market share are Nokia, Motorola, Samsung, SonyEricsson and LG.

8. A network effect is a characteristic that causes a good or service to have a value to a potential customer which depends on the number of other customers who own the good or are users of the service. In other words, the number of prior adopters is a term in the value available to the next adopter. One consequence of a network effect is that the purchase of a good by one individual indirectly benefits others who own the good — for example by purchasing a telephone a person makes other telephones more useful. This type of side-effect in a transaction is known as an externality in economics, and externalities arising from network effects are known as network externalities.

9. Subscriptions Global System for Mobile communications(GSM ) is the most popular standard for mobile phones in the world, 82% of the global mobile market uses this standard . GSM is used by over 2 billion people across more than 212 countries. The key advantage of GSM systems to consumers has been better voice quality and low-cost the Short message service (SMS, also called "text messaging"). Like other cellular standards, GSM allows network operators to offer roaming services so that subscribers can use their phones on GSM networks all over the world.

10.  Internet - various information and services, such as electronic mail, online chat, file transfer, and other resources of the World Wide Web (WWW). MMS - Multimedia Messaging Service is a standard for telephony messaging systems that allows sending messages that include multimedia objects (images, audio, video, rich text). MMS for sending and receiving photos and video.

11. MAGTI – a cellular communication operator SIM Card – 5 GEL Mobile to mobile – 0.288 GEL Mobile to Georgia- 0.288 GEL Mobile to International(00) - 0.7-0.9-1.9 GEL

12. Geocell(LAI-LAI) SIM Card - 10(5) GEL Monthly fee(ADVANCE) - 7(5) GEL Goecell to Geocell – 0.259( 0.28) GEL Goecell to other GSM - 0.288 GEL Goecell to Wire phone - 0.288 GEL Goecell to International- 0.9-1.9 GEL

13. BEELINE SIM Card - 5 GEL Starting balance - 10 (5)GEL Beeline to Beeline– 0.02 (O.27) GEL Beeline to other GSM - 0.288(O.27) GEL Beeline to Wire phone - 0.288 (0.27) GEL Beeline to International- 0.65-1.9 GEL