There will be upsurge of LET around the world in 2011. More and more manufacturers launch the 4G terminals. It makes the 4G application possible. It's estimated that the 4G standard will come to the mass experimental stage. The TD-LTE test network has been built in Shanghai and Guangzhou.
GSM: Global System for Mobile Communications (GSM) is a digital cellular system that uses TDMA, allows a frequency to admit multiple calls and simultaneous channels of data.
PCS: Personal communication service (PCS) is a second-iPhone 6 features, Description technology also referred to as digital cellular. The digital service, which works over CDMA and TDMA interfaces, operates at the 1900 MHz frequency range. People sometimes think PCS is a SPRINT product, they were, in fact, just one of the first companies in America to use it.
What is the gain loss of LMR400 & 9913? 3.9 dB @ 850 MHz and 6.5 @ 1900 MHz. RG8X loses about twice the that loss and RG58 loses about 4 times that loss.
Connectivity is not a problem with this mobile phone because data transfer or file downloads can be possibly done through its Wi-Fi and Bluetooth support and not to mention the internet with speeds reaching up to 3.6 Mbps. This phone also features full HTML browser support and is a good thing that it has Wi-Fi connectivity. PC syncing is also possible for photos and other multimedia files.