To know about CDMA and GSM, it is very necessary to know the core features of both technologies. There are some similarities and differences which tells more about what they are and why one is preferred upon the other. It is sort of a competition between two technologies and yet the no one is declared best from the other. Here are similarities and differences which help you to decide which one is suitable for you and why second is not a good choice.

Similarities of CDMA & GSM

Cellular technologies

The first and the basic characteristic which is common among both is that they are cellular technologies. Both are used for the communication purpose. User can send and receive data, information, calls and SMSs.

Both technologies are offering best coverage in the areas where they are. Both are cellular technologies and there is no third party to interfere. The decision as to which one should be the choice is based on the cell phone you have or the service available in the area.

All the features are nearly common in both technologies. Both facilitate calls, SMS, data transfer, MMS, video streaming, internet and much more.

Differences between CDMA & GSM

Global VS Limited

GSM is a Global System for mobile communication. It is a source of seamless communication which is continuously crossing the boundaries to access the distant locality. It is prevailing even in the rural areas. While CDMA is originated from United States cover North America and some of Asian Territories. It is not available worldwide so ultimately large number of users prefers to switch on the GSM.
Cheap VS Expensive

GSM is a cheap service so economic on the user’s pocket. As GSM is globally effective and cheap a swell so is preferred on CDMA. CDMA is comparatively costly service and is not available worldwide. It is still restricted to some countries dominantly in American territories.
Data Delivery

Now-a-days mobiles are rapidly replacing PCs and laptops, so large amount of data transfer requirement is increasing in mobiles. In this regard, CDMA is one step ahead than GSM. However competition is still continued.

SIM Cards VS R-UIM Card

GSM technology is operated through SIM card. Any cell phone with SIM pocket can start receiving signals. The card has connection with the network. You don’t need to change the set just the activation of SIM required from the regional network operator. It configures with the area network and starts working.
CDMA phones have R-UIM card which has limited network in United States and parts of Asia. CDMA is enabled through phone sets. Once a phone is activated it has linked to only one network. If user wants up gradation they have to change phone set at the cost of old one.
Worldwide Roaming

GSM as stands for global system so is providing the phone facility to worldwide. Its aim is to target both advanced and rural areas while CDMA is aiming high and restricts to only American states and parts of Asia leaving completely rural areas.

Coded Security

Here CDMA wins the title. As CDMA claims code division multiple access. User has a specific frequency which he or she can use confidently as code is apply on the frequency in the spread spectrum. Only intended user can decode the information. This mode provides extra security and is beneficial for the users who are attached with the sensitive fields like military etc.

GSM is more mature network than CDMA. As it is in the field from the past many years and is stabled. CDMA is in its infancy, however, it is showing more tendency for the future and can stand alone having niche in cellular market.

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