General cell phone memory expansion is to expand the ROM

 The shielding frequency of cell phone jammer can be customized according to requirements of customers.
Advantage of this approach is to identify them more intuitive, very simple to operate. The disadvantage is the limited scope of identification, identification of lithium-ion battery only effective, but not very convenient to implement, who would carry it around with a steelyard? Here, "the wind blows", in fact, refers to the careful observation of the color appearance of cell phone batteries, cell cell phone whether the appearance of the same color. Currently, many cell phone manufacturers, in order to gain a firm foothold in the market quite a mixed bag, protect their own interests, often through continuous technological innovation, to strive to improve the technological level of cell phone battery, with a view to suppression by high-quality counterfeit batteries to ensure quality battery sales.
Currently the main use of WAP 1.2 and 2.0 versions. Generally low-end cell phones can only browse the 1.2 version, the current mainstream cell phones have support for version 2.0. With the 2.0 version to use cell phones to browse the contents more lively, as you can stand there like a computer background music, background image, so that the mobile web had become monotonous colorful. The English full EDGE Enhanced Data rate for GSM Evolution, the meaning of Chinese GSM services to improve the data rate.  From a technical point of view, GSM1800 because of the high frequency band, making the signal penetration ability, so the tall buildings of the complex environment can bring good call quality and communication coverage.
OMS full depth of the terminal on the cell phone ordered a "flying letters, newsletters, wireless music player, 139 mailboxes, Monternet, Cell phonebook Manager, Treasure, etc." China mobile data services, making China the first time mobile data services and cell phones combination of the user experience to achieve the depth of their own. OMS core competence is another major developer in the development of multiple applications on the OMS tool, but also compatible with icell phone, AndroidS60, windows mobile and some other small tools. By Apple for the iCell phone operating system. It is mainly used for iCell phone and iPod touch. Another Nokia MAEMO systems, LINUX and Samsung's own cell phone operating system developed by BADA. The company also can carry out the shielding design of cell phone jammer for other frequency channels according to customer’s requirements.
ROM is divided into a one-time cure, optical and electrical erase erase rewrite of two types. In layman's terms, the cell phone equivalent of the computer's RAM memory, is generally fixed, are cell phones running the space. ROM equivalent of a computer hard drive to store data. General cell phone memory expansion is to expand the ROM.