A portable memory chip that helps to store the information about the user is known to be the subscriber identity module according to the term of the layman. That saves the data and information about the mobile phone user. To designate the country code of origin seventeen digit codes help to identify the name of the country with the unique user id and then the system carrier. The phone carriers can do the process of carrying about the country code. Through this process of maintaining the country code, the attributes can make out with the mobile phone bills and then makes the charge of using it. For the growth of the ph community, the web application named php lx makes out of the development framework. The SIM cards are easily transferred and easily can be handled from one device to the other device. The transactions can be easy by making the switching of the data over the contacts of the existing to new mobile phone and then the personal setting also transferred with the transaction.
Background of SIM card: In the year 1991 SIM cards were introduced in all the ways. In the case of the introduction, the SIM card was introduced in the size of the credit card. From the time of introduction, several updates are taken into account and the size of the SIM card makes smaller and smaller. The history of the global system of mobile communication makes more close to the evaluation of its arrangement of the mobile network. The cellular network of the second generation is developed to describe the protocol which is known to be the GSM that stands for. For the act of mobile communication, nowadays the GSM stands for the system of default global standards. A crucial part of the GSM network is known to be the SIM card that helps to store the information of the user especially used for the process of authentication. To connect with the GSM network the SIM card helps you to connect with your mobile phone network. The usage of the mobile phone system is very useful because the GSM network aids to track the usage of the mobile phone like the data usage, texts, and your minutes of mobile phone usage. And also the GSM network provides you the accurate mobile bills towards your usage. In countries like Europe, Asia, Africa, and other places the GSM is known to be the standard network. An additional network is interestingly along with the GSM network which is named as CDMA that is described as code division multiple accesses that Verizon and Sprint have carried over the Code Division Multiple Access. The usage of the Code Division Multiple Access helps to carry out over the lowering cost of the carriers and also the users carry over the network of the Global System of Mobile Communication of the mobile phone usage or else with Code Division Multiple Access of the usage of the mobile phones. That usage of CDMA or the use of GSM helps to low the cost of mobile phone usage. The brain devices of the mobile phone are known as SIM cards with the relation with other network connections.