MOBILE PHONE IS AN ESSENTIAL PART OF OUR DAILY LIFE. MOBILE PHONE IS GOOD TOOL FOR COMMUNICATION, THAT IS PRIMARY USE OF MOBILE PHONE. AT PRESENT IT IS TOOL FOR INTERNET, CAMERA, MUSIC, E-MAIL, CHATING, PRINTING AND MANY MORE...
The point is that the overall form factor and size of mobile phones have also changed a lot over the years, and for this reason, we've decided to go back in time to the moment it all began, so that, eventually, you'll get an idea why you're now able to read this article from your smartphone's browser.
1. Although many developments in the field of portable communications were carried out in the United States, Europe didn't lag behind. Hence, the first fully automatic mobile phone system, called MTA (Mobile Telephone system A), was developed by Ericsson and commercially released in Sweden in 1956. That system was based on manual control and it has 40 kilos weights.
2. The successor of the MTA system was called MTB and used transistors, which translated into a much lower weight (around 9 kilos). It was introduced in 1965, used DTMF signaling and attained a maximum number of 600 customers.
3. Evolution of mobile phones throughout the 1960's and early 1970's While the Americans and Europeans were busy improving on designs and segmenting the mobile spectrum, Russian and East-European scientists also tackled this particular field.
4. The next year, Kupriyanovich came up with an even smaller version, which weighed only around 500 grams.
5. Also in 1958, the USSR began to deploy its first mobile phone service, called "Altay," dedicated to motorists. What's really interesting to mention here is the fact that s me upgraded versions of the "Altay" are still in use in the most remote parts of Russia. Another interesting evolution was represented by the pocket mobile automatic phone RAT-0,5, combined with a base station RATZ-10 (RATC-10), a system developed by a team of Bulgarian researchers.
6. in 1970 by Amos E. Joel, Jr., an Bell Labs engineer, who invented an automatic "call handoff" system to allow mobile phones to move In December 1971, AT&T submitted a proposal for cellular service to the Federal Communications Commission; unfortunately, the FCC approved the proposal only in 1982. By then, Europe had already taken the lead in the field of mobile communications, via the ARP network, which was launched in 1971 in Finland.
7. 1973 - the first analog mobile phone call in US
is made Despite the fact that mobile communications had been there for quite a long time, the first "official" mobile phone call was carried out in 1973. The two parties involved were Dr. Martin Cooper from Motorola and Dr. Joel S. Engel, head of research at AT&T's Bell Labs, who were actually rivals in this particular field. The handheld used in this operation was in fact a prototype of the first "true" mobile phone, Motorola's DynaTAC.
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