India Cellular Network


Tamilnow Articles -> Technology and Cellular Service Providers

Mobile phones were introduced in India only a decade ago but within this small period of time it has become an essential thing in our life. Today in India almost all cities, towns and many villages are covered by major mobile phone operators.


Mobile phone service providers divide each city into small cells and install a mobile phone tower in each cells so it is also called cellular phones. In cellular service there are two main technologies GSM and CDMA. GSM stands for Global System for Mobile Communications and CDMA stands for Code Division Multiple Access.


GSM service is available in more than 200 countries and is used by around 2 billion people worldwide. Normally GSM networks operate in 900 MHz or 1800 MHz. Another important feature of GSM is Subscriber Identity Module or SIM Card. It is a small smartcard which contains subscriber information and phonebook. For higher speed data transmission either GPRS or EDGE can be used in GSM phones.  


CDMA is a form of multiplexing which divide signals by random pseudo codes instead of conventional multiplexing methods like dividing by time or frequency. CDMA is widely used in cellular networks and global positioning systems (GPS).

Cellular Subscribers

As on Apr 2007 India has 167 million mobile phone subscribers. Out of this 125 million are GSM users and 41 million CDMA users.

Cellular Service Providers

BSNL, Bharti Airtel, Hutch, Idea, Aircel, Spice and MTL are the main GSM providers in India. Reliance Communications and Tata Indicom are the main CDMA providers in India.

Bharti Airtel

Airtel is providing cellular services in Delhi, Mumbai, Kolkata, Chennai, Andhra Pradesh, Gujarat, Haryana, Himachal Pradesh, Jammu and Kashmir, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Goa, Orissa, Punjab, Rajasthan, Tamil Nadu, UP and West Bengal. Airtel is the No.1 cellular service provider in India using GSM technology. Airtel has 23% market share in India with a total subscriber base of 38 million.

Reliance Communications

Reliance has both CDMA and GSM networks and total subscriber base of 29 million or 17% market share. It has GSM network in Assam, Bihar, Himachal Pradesh, Kolkata, North East, Madhya Pradesh, Orissa and West Bengal. Reliance has CDMA networks in other states and cities.

Bharat Sanchar Nigam Limited (BSNL)

BSNL is a state owned telecom company which has GSM presence in almost every cities and towns. BSNL has 27 million subscribers with a market share of 16%.


Hutch is another emerging GSM provider in India with coverage in Kerala, Mumbai, Delhi, Kolkata, Chennai, Gujarat, Andhra Pradesh, Karnataka and Punjab with a total subscriber base of 27 million.

Tata Indicom

Tata Indicom is a main CDMA provider in India with 16 million subscribers all over India. Tata Indicom has presence in almost every states and cities in India.

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