Mobile number portability guide


MNP is an acronym of Mobile Number Portability. MNP allows users to change their telecom service providers or service location without changing the mobile no. If you are not satisfied with services of existing service providers or services are costly or any other reason, you can replace the telecom service provider while retaining the same telephone no.

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Code Division Multiple Access technology overview


CDMA is an acronym of Code Division Multiple Access. It is a second generation mobile communication system; it is the combination of FDMA and TDMA, and in this system, a user has access to the entire bandwidth for the entire duration. Here different CDMA codes are used to distinguish different users i.e. each user is assigned a unique code which is called PN codes.

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Difference between 1G, 2G, 3G and 4G wireless technologies


1G Wireless Technology

  • The 1G technology uses FDMA for different Subscribers by the single user on a single channel.
  • Voice quality is moderate, and effect of noise is more as the FDMA is analog communication.
  • It doesn’t support the Data services; Mobile handset battery will give less backup.
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Overview of 2G Technology


2G Technology also called as Second generation wireless communication systems introduced in the year 1990 in Europe. There are two types of system supported in 2G Technology they are:

  • CDMA System
  • TDMA system
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SIM Card and its functions


The full form of SIM is Subscriber Identity Module. SIM card is small memory card containing the information about various network settings and information such as the mobile number and its Key for GSM and CDMA. It also holds text messages and contact details. It has to be inserted in the GSM/3G/LTE handset to work. Depending on the size of the chip there are different types.

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