Mobile phone

                                   

Mobile phone

Mobile phone is the blessing of modern science .Silicon slip is used in this set which acts like memory .It is a cordless  telephone  system .It is very essential for the modern life.A mobile phne set works throughout sim card and a rechargeable battery .There are two kinds of communicating systems by mobile phone such as mobile to mobile and mobile to and T&T.Mobile to mobile system can’t communicate with T&T line but mobile to T&T  can communicate with eath other .There are three networking systems in the mobile phone .They are Zonal .NWD and ISD .Zonal system is used in a particular p;ace.NWD system is used in all over the country and ISD system work all over the world.There are mainly four mobile phone companies in our country than telephone such as Grameen .City cell ,Aktel and Banglalink .They serve the customers in wo way .(Prepaid and Post paid system).The use of mobile phone is more convenient than telephone call .The man Who sends The message will have to pay the  bill but  the receiver can respond the message without any payment .Now there lies a competition among all the mobile companies .Specially businessmen and the service men are much benefitted though the use of mobile phone .It is also useful to the doctor ,engineers and high officials .But the  calling charge was very high of the mobile phone when it was introduced .A mobile phone holder has to pay 6.90 taka per minute.Now the call rate has become lower .Despite of a lot of benefits.  It has also bad impact in our country .The criminals always use this phone to keep their secrecy and also  to avoid arrest .There is another dangerous impact of mobile .It produces   and ultra mangnetic wave which may cause the brain cancer .In spite of these, there is no alternative to mobile phone to make a latest civilization for communication and correspondence