GSM is the most commonly used frequency range for disruptive cell phone networks and mobile communications. It includes four main frequency bands (850 MHz, 900 MHz, 1800 MHz, 1900 MHz) and many smaller standards used in different countries/regions in the world (such as UMTS, CDMA2000, Nextel, TDMA, AMPS, W-CDMA PCS, etc.) . Under the communication standard, 3G must be mentioned separately, because it is not only a modern communication frequency, but also can be used for other purposes. You can choose GSM or 3G frequency to block gsm. The difference between these two types of cell phone signal jammer is that the portable 3G jammers have a maximum radius of 15 meters, while the desktop UMTS CDMA GSM jammer has an interference radius of up to 200 meters.

We use wireless technologies very frequently and we really rely on them. We use them not only for communication and data transmission, but also for navigation, security and even payment. It really is more practical. There are two reasons. The first is that RF-based payments are more secure than our usual cash. No one will steal your money because you don't have any at all. They are stored in the bank and your mobile device and basically make and verify payments. Another positive feature of this system is that it integrates many banking services. You can use a credit card without a real card. Isn't that convenient?

You should also take into account that it is also useful for tourists as your account can be easily exchanged, so you don't have to worry about buying enough currency in your country. Another positive feature of RF payment is that it is indeed cheaper. In fact, you will need a lot less funds to maintain the financial system, and you can also buy a wireless jammer to protect the smooth running of transactions.