When you purchase a smartphone, see the description often statements such as "Supports LTE bands 3, 7 and 20". In the mobile technology be used for different wireless standards in different frequency ranges. In this article we will explain to you what it has with the frequency bands, the Smartphone.
Frequency bands in Smartphones
Frequency bands frequency ranges are actually characterized by a lower and upper wave length of the frequency.
The international telecommunications Union (ITU) and the Federal Communications Commission (FCC) have divided the entire frequency range of 3 Hz to 3 THz (to 3,000,000,000 Hz) frequency bands.
Frequency band 9 includes, for example, in the range of 300 MHz to 3 GHz.
The individual bands are, in turn, divided into bands. So there are, for example, the LTE-bands.
In Germany, three LTE bands are used. Band 3, with a frequency range of 1,800 MHz, Band 7, 2600 MHz and Band 20 to 800 MHz.
Alternatively, the LTE-bands with the 800 Band, or simply be referred to as LTE 800, LTE 1800 and LTE 2.600.
Because in other countries, other frequency bands are used for LTE technology, it is important, what are the LTE frequency bands are supported by which phone.
LTE 800 will only be used on the country, LTE and 1,800 and 2,600 are mainly in cities.
The 800 Band, the Telekom, Vodafone and O2 share. The 1,800 he Band use only, Telekom and Eplus, the 2,600 he Band to use all four German mobile communications provider.
Also, for the mobile radio standards GSM (G), GPRS (2G), Edge (E) and UMTS (3G) to be used in different countries, different frequency bands, but less than in the case of LTE. Nevertheless, it may be that you will not be able to use, for example, a Smartphone from the USA in Germany. Is used in Germany, the so-called Quad-band.
An example: The iPad 3 has a LTE antenna fitted, but it supports only the 700 and the 2,100 he-LTE-Band. In order for you to not be able to use LTE with the iPad 3 in Germany.
In the next article, we will show you how you on Android, all of the frequency bands unlock.