Modernization Mobile Phones

8/6/2019 Modernization Mobile Phones

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Today people can live without food but they

cannot live without mobile phones.Mobile phones have become like a body partto the people. They carry the mobile phones

wherever they go (even to bathrooms).The first mobile phone was released in

1973 by Motorola Company.


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The idea of inventing the cellular phone wascame by the invention of shore-to-ship radiocommunication invented by Reginald Fessenden

in the second world war.He was called as the father of Radio-Broadcasting. He was a Canadian born in July 22,1932. The first Cellular phone was discovered by Joel Engel and Richard Frenkiel in the year 1971.Martin Cooper of Motorola was the one whomade the first cell phone call to his rival JoeEngel of AT&T Bell Labs.


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1. 1G-First generation-the 1980 s

The first popular mobile phones used

analogue radio technology.Most were actually fitted into cars as theequipment was so bulky.

This was the 1980 s


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Anal g t c no lo gy asome asic r ob lem s

name ly t ey e re bu lky,oo r a ud io uality, a d s o rt batt e ry lif e and

anyone it a sca nne rcou ld eave sd rop on

con se rvati on s.

Ne ve rt e le ss e arlyadop te rs bou g t t em

in drove s ic

en cou rag ed t e ope rati ng comp an ie s

to inve st b illion s in de ve lop ing be tt e r

phone s. Large mob ile phone


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The firstgeneration

mobile phonesworked with theFDMAtechnology.

The firstgenerationmobiles are largein size andheavy to carry.

The 1G mobilephones are usedonly for the voicecommunicationpurpose.

MOBILE PHONE

SHOP IN1980 S

MOBILE PHONE IN1980 S


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Theybecamedigital

devicesrather

analogue.

Securitywas muchbetter as itis harder to

eavesdropon digitalsignals.

2G mobilephones use

digitalcircuit

switchedtransmissions.

Thisultimatelyenabledquicker network

signaling,lowering

the amountof droppedcalls and

increasingcall quality.


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Advances in battery technology, as wellas computer chip technology alsohelped to make 2G cell phones muchsmaller than their predecessors. Withthese innovations, cell phone usagesoared.

B attery life improved because the phoneconsumed so much less power and they

became much smaller.


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As 2G digital networks were online,most of the time, they replaced analognetwork frequencies, effectively makingthem obsolete.

Phones based on 2G technology weremuch smaller than the brick telephonesof the mid to late 80's.

Most 2G cellular phones were usually inthe range of 100 to 200 grams, plusthey were hand held devices that weretruly portable without the need for alarge battery.


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The second generation mobile phones are worked withthe GSM and CDMA technologies.

The GSM technology was first introduced in Finland in the

year 1991.Many new features are invented in the secondgeneration.

Digital mobile phone networks were in use in the UnitedStates in 1990 and in Europe by 1991.


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Mobile phone in 1991 with adapter.

1G and 2G mobile phones


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I n the 3 rd generation phones,the way of transmitting and

receiving digital data changedfrom the usual circuitswitching method used for telephone calls over topacket-switching which is howthe internet works .


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The 4G mobile phones comewith the features of mobiletelephone, mobile internet,Video calls and mobile TV.

The mobiles can have theinternet connection downlink

up to 56Mbps and 22Mbps inuplink. You can have theVideo calls where you can see

the other end talker in yourphone.

The modern phones comeswith the touch screen

technology where everythingin touch.


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Modernization Mobile Phones