GSM Technology

GSM is the most popular standard for mobile phone service in the world. In much more then 200 countries in the world folks making use of GSM mobile service. However, various countries use distinct GSM Radio frequency for their mobile networks. Worldwide four frequencies are widely used for GSM mobile services. They are 850MHz, 900 MHz, 1800MHz and 1900MHz.

Although 850, 900 and 1800, 1900 frequency are really close, typically mobile phones can’t receive a lot more then 1 frequency at-a-time, a phone that works with 1 band, can not obtain signals of other bands. So if you want your mobile to work with numerous bands, you will need to have multi band mobiles. Based on your will need, you can go for dual, tri or quad band mobile set.

As a entire, both high and low frequency bands have some benefit and disadvantages. For high frequency service, the network is much less effected by the influences of the weather. And you can have more clear and un-interrupted connection. One more benefit of a high frequency is that you only require tiny antenna. Primary disadvantage of higher frequency band is its lower reach. These bands are very good for cities where density of mobile users is far more. Where as, lower frequency bands are excellent for rural areas since of their big area reach.

850 MHz is the lowest frequency utilized for GSM mobile service. As a result of this, 850 MHz network has a bigger and much more penetrating reach then the 900, 1800 and 1900 MHz network. Apart from that, the difference between the 850 MHz and the 900 MHz network hardly noticeable. Lower frequency services are very good in big building simply because of their far more penetrating reach. A disadvantage of a low frequency network is its low capacity.

900 MHz networks are very old networks. Like 850 MHz, 900MHz also has a larger and more penetrating reach then the 1800 and 1900 MHz network.

1800 MHz is a fairly high frequency for cellular phones. Simply because of this, 1800 MHz networks have a smaller and much less penetrating reach compare to 900 and 850 MHz networks. By this the reach in large buildings is low. An benefit of 1800 MHz networks is that the capacity is larger. This band is idle for cities where density of mobile users high.

1900 MHz available only in North America, some networks in Canada and South Africa. This band is not available in Europe or Asia. 1900 MHz quite similar to 1800MHz. Due to the fact of high frequency 1900 MHz band network isn’t interrupted by the influences of the weather and you can have a crystal clear connection most of the times. For this network, GSM provider needs to use more mini antennas. An benefit of 1900 MHz networks is that the capacity is bigger.