Block Caller Id Info In Cell Phone For Student Break Time
In recent years, with the rapid development of mobile phones, it is not uncommon for students to use mobile phones to affect their life and learning. Many teachers who visited the dormitory at night said they often found that some students were using mobile phones to surf the Internet in bed, and some even in the middle of the night. It is still open at one or two o'clock, so in order to prevent students from playing mobile phones in the middle of the night and allow them to have a better rest, many schools have to choose to install Block Caller Id Info In Cell Phone in the dormitory. Actually, how to choose and install it will be explained one by one. Cell phone jammers installed in school dormitories are mainly used during noon and evening student breaks. Noon is generally 11:30 to 1:30, and evening is 10:30. until 2 am. That is to say, there is no need to shield the mobile phone signal 24 hours a day, so you can also choose cell phone jammer with ordinary power such as an external adapter.
Recently, the reporter found that in the Internet Digital Plaza of Hongqi Road, Urumqi, a number of businesses publicly sold an electronic instrument named " Block Caller Id Info In Cell Phone ". It's unnervingly powerful: a metal box worth around $200 actually works. Make the phone "shut down"? "This is a 'cell phone signal jammer', which can prevent mobile phones from making or receiving calls." The stall owner faces in front of a booth in Digital Plaza on September 14. The customer introduced the "cell phone signal jammer". The stall owner introduced and demonstrated to customers. After some debugging, he picked up a metal box the size of a mobile phone with several antennas on it, and asked customers and onlookers if the phone still had a signal. Everyone took out their mobile phones and fiddled with them, saying that they had no signal and could not make or receive calls. The reporter noticed that this "mobile phone signal jammer" is not the only point of sale in Digital Plaza, and the manufacturer and address are not marked on the product packaging. Depending on the shielding range, the price of a "mobile phone signal jammer" ranges from 100 yuan to 300 yuan. One businessman said that many organizations are now using this type of cell phone blocker to prevent employees from answering calls during a meeting, thereby affecting the process of the meeting.