China cell phone jammer doesn’t interrupt any other electronic device except the cell phone

Again, due to handoff failure caused by dropped calls. Network operators to transmit radio signals through the base station and for customer service, the base station's range is limited, so in a region, there may be a lot of base stations. All the base stations together is a network system, each base station has its own range, over this range, then mobile phone base stations to be replaced, thereby maintaining the cell phone is always in the network. Signals on the GSM, CDMA, DCS, PHS, and 3G bands can be stopped by   cell phone jammer .When a user during a call in a service beyond service area to another area when the user's voice channels and also from the original serving cell switching over, but if the new service area busy at this time, no extra channel assigned to the users, so the service area of the switch will fail, so the user will be interrupted during a call. Appropriate to increase the base station can alleviate this situation, but will also increase costs, and excessive base stations will increase the radiation, pollution of the environment. So, how not to increase the number of base stations, but also when the handoff can not easily dropped, the network operators look to solve the problem.
Also, because of temporary network failure, or network particularly busy, can also cause a bad cell phone signals. More ever,   china cell phone jammer doesn’t interrupt any other electronic device except the cell phone.For example, in the bustling business district, may also appear telephone call does not go out, it does not come to fight the case.
In addition to the network signal is not good reason other than cause, the other is a question of cell phone users. Mobile phone SIM card contacts are dirty can also cause poor receive and transmit signals, then as long as the Kaca out clean. There are a number of mobile phone users to take "special measures" - the phone turned on, unplug the battery will be "not in the service area," the response effect, It is reported that some people use this way to avoid the phone. The customer can turn   cell phone jammer on or off for the instant shielding or unshielding through the remote control function. However, service center staff advice we often use the SIM card in this way will shorten the life span, ultimately resulting in damage to the phone.
Dropped phone calls in the analysis
Both in phone call is dropped, due to abnormal termination calls for some reason. It is the mobile communications and strive to solve and not completely overcome the technical problems. There are three general reasons for dropped cell phone:
First, the strong radio interference can cause dropped calls. It is suggested that the main control software of this set of intelligent management system of   cell phone jammer should be installed in the computer whose Windows XP operation system can stably run.Since mobile communication is transmitted by air waves, when the air is being used on some radio waves interfere to a certain extent, so that the signal-noise ratio down to below the standard, the phone will automatically turn off, it off-line.
Second, stop the spread of emergence and reflections from buildings, radio interference on the receiving point will be off-line.
Third, the handoff failure occurred dropped the phone call from one location to another service area extended across the service area or re-cross, the user calls the voice channel to be switched from the original cell to the new service area, but the new business district.   cell phone jammer can generate shielding magnetic field (i.e. the mobile phone can not receive the signal) in the specific range.The user busy is random, if there is no effective voice switching channels available, the handoff will fail, resulting in dropped cell phone.