Comprehensive notes on Mobile Technologies Class 12

Comprehensive notes on mobile technologies – in this article you are going to learn about popular mobile technologies like 1G, 2G, 3G, 4G, 5G, and mobile processors. So let’s begin!

Comprehensive notes on Mobile Technologies Class 12

As you know nowadays mobile has changed our life. Almost everyone is using mobile for many different reasons. Using mobile is very convenient because you can use it anywhere, communicate with people anywhere, IoT enables the control of the smart devices at home and other places.

In this article Comprehensive notes on Mobile Technologies Class 12 we will see the architecture of mobile like 1G,2G,3G,4G,5G, and mobile processors. Let’s discuss these for Comprehensive notes on Mobile Technologies Class 12.


G stands for generation here. The first generation 1G came around 1982. In this network system, users can do voice calls only. It was using an only analog signal that was carrying out the voice from the caller to the server.

Mobile Technologies Class 12 - 1G 2G Mobiles
Mobile Technologies Class 12 – 1G 2G Mobiles


The second generation of mobile network system was developed in 1991. This network system was using the digital signal for data transmission. The more features were added in 2G as more people can communicate simultaneously and improved the security with signal encryption. In this technology SMS and MMS were introduced.

3G 4G 5G for Mobile Technologies Class 12
3G 4G 5G for Mobile Technologies Class 12


The 3G was developed during the late 90s, but it was introduced around 2001. It provided both voice and data services. In fact, 3G network system has increased the use of the internet as it was used in mobiles. It provides internet access via the same radio towers which are providing network signal to mobile phones.

It has more data capacity and good voice quality in calls. More calls can be done using same frequency range with faster data transfer speed.


4G has changed the entire world and smart phones came into the picture. In India, Reliance Jio has launched the 4G first with free of cost and rapidly changed the market of smart phones and internet. 4G provides better speed and given the access to wireless devices with interactive multimedia, voice, radio, internet and broadband service.

For more details click here.

The next technology for Comprehensive notes on Mobile Technologies Class 12 is 5G, let’s see!


It currently in the under-construction stage. It will be more helpful for IoT and Machine to Machine (M2M) communication. M2M means a direct connection between wired and wireless devices. It allows transferring data in Gbps. It is expected that it will support all the devices of the future with IoT.

For more details refer this article.

To read the about the mobile processors for Mobile Technologies Class 12 follow this link and read about the mobile system organizations:

Mobile processors

Now we will discuss wireless mobile communication protocols for Mobile Technologies Class 12.

Wireless mobile communication Protocols

As per the syllabus we will discuss the wireless mobile communication protocols such as GSM, GPRS and WLL. So here we go!

GSM SIM for 3G 4G 5G for Mobile Technologies Class 12
GSM SIM for 3G 4G 5G for Mobile Technologies Class 12


It stands for Global System for Mobile communications. This was established in Europe in the mid-1980s. and its very popular all over the world almost.

It covers the areas and mobile users need one SIM (Subscriber Identification Module) cards from the service providers for mobile communications. As you know some the names are BSNL, Vodafone, Airtel, Idea etc. SIM cards are small chips installed in the mobile devices.

GSM uses TDMA (Time Division Multiple Access) allows eight simultaneous call on same radio frequency. It works by dividing a radio frequency into time slots and then allocating slots to multiple calls.

To read more about GSM – Click here.


GPRS stands for General Packet Radio Service. As you know that it is basically used to track the location of a particular device. As you have seen the full form, it used the packet switching technique. It enables the efficient capacity of data through mobiles. The important factors of GPRS are Channel Bandwidth, Modulation type, Data handling, and Max data rate.

GPRS enabled businessmen to keep in touch with the office whilst they were away and this trend increased as time progressed and data capabilities improved. With 2G GPRS data usage started to increase and the trend to move towards data rather than voice being the primary requirement for cellphone handsets was set in motion, although it would be some years before data revenues outstripped voice revenues.


It stands for Wireless in Local Loop. It is analogous with local with telephone services. It provides transceivers for line-of-site multichannel connection. Each customer is equipped with a mini-station of low power into the telephone which is connected.

It consists of transceivers and WLL interfaces assembled in a metal box. Two cables and a telephone connector are only the outlets from the box. One cable connects to an antenna and telephone connectors. Fax or modem could be also connected for fax or computer communications.

Read more about : WLL

So here I am concluding my article if you have any doubt, query or suggestions , feel free to ask in the comment section.

Thank you for reading this article.

Follow this link to read more for Computer Science Class 12.

Computer Science Class 12

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