The mobile block other devices jammer uses the latest interference technology to generate constant electromagnetic signals, covering mobile communication GSM, CDMA, GPRS, local call, and PHS frequency bands, so that mobile phones cannot be used in certain places, thus solving some of the current life In the negative impact due to mobile phone signal. Common mobile cell phone jammer on the market have operating frequencies: 869~894MHz; 925~960MHz; 1805~1880MHz and 1900~1990MHz, etc. The operating frequency bands are CDMA800, GSM900, DCS1800, and PCS1900. It can control the range of about 40 meters in diameter, using DC-DC converter input voltage and 5V output voltage. After 3G signals are on the market, the working frequency bands of mobile phone signal jammers on the market have also been upgraded from the previous four frequency bands to five frequency bands. On the basis of the previous four frequency bands, a frequency band of 2100 to 2200 has been added. Used to shield and interfere with the 3G frequency band. For the uplink and downlink channels of the mobile phone system, it uses techniques such as frequency multiplication, frequency division, and frequency hopping filtering to analyze the required shielding frequency; customize a spherical shielding space according to the Power of the mobile block other devices jammer, and automatically form a shielding magnetic field within the specified range , So that mobile phones (including PHS-China Telecom PHS GSM-China Unicom, China Mobile, CDMA-China Unicom) mobile phones in this space are invalid. When the mobile phone jammer is in working condition, it can disable the signal receiving and sending function of the mobile phone within the specified range, and cannot dial out and dial in, so as to achieve the purpose of mandatory prohibition.
So how to crack the jammer? Here are three ways to crack the signal jammer.
One of the ways to crack the mobile phone signal jammer
Enter your phone settings, click "Network Settings", change the network mode to "Manual Mode", then enter "Network Search", wait until the words "China Mobile" or "China Unicom" appear, then exit immediately. The phone will have a signal, but the length of anti-blocking time depends on the quality of the phone. This method is applicable to most mobile phones. Principle: The mobile phone originally works in a certain frequency range. The mobile phone and the base station are connected by radio waves to complete the transmission of data and sound with a certain baud rate and modulation method. Then the mobile block other devices jammer scans from the low end frequency of the forward channel to the high end at a certain speed during the working process. This scanning speed can cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station. The mobile phone is manifested as a search network, no signal, no service system and other phenomena.
The second method of cracking signal mobile phone jammer
Because the working principle of the mobile block other devices jammer is to shield the mobile phone by interfering with the mobile phone signal of the designated band, so long as the mobile phone's receiving and transmitting frequency can be modified to prevent it from being shielded, the signal jammer can only shield the mobile phone signal of 900---1800MHZ, and the mobile phone The receiving transmission frequency of 850-1900MHZ is much larger than the shielding range of the mobile phone jammer, so as long as the receiving transmission frequency of the mobile phone is adjusted to the maximum in the mobile phone settings, the mobile phone signal can be received normally.
The third method to crack the mobile phone signal jammer
This method has relatively high requirements for the mobile phone and the environment, but the effect is the best and most concealed, provided that the mobile phone must have wifi wireless Internet access function and there must be an available wireless network around. After searching and successfully connecting to an available wireless network with a mobile phone, even if the mobile phone has no signal, it can still surf the Internet without traffic.