Today, there is a wide variety of cell phones available for communication and it is very cheap to buy one, so whether you are an old man or a young boy, you can get a good working cell phone at your disposal. Although each coin has two different sides. Today, people are misusing this communication tool on a large scale. With the misuse, more and more people are advocating that we should be polite and follow cell phone etiquette. There are also various wifi jammer to prevent privacy invasion, how can we prevent our cell phones from being blocked? Here are the specific methods
Method 1: Tap the phone settings, tap "Network Search" in "Network Settings", change the network mode to "Manual Mode", then enter "Network search", wait until the word "China Mobile" or "China Unicom" appears, then immediately exit. The phone will have a signal, but the length of the anti-blocking time depends on the quality of the phone. Note: Some cell phones can only be set up successfully for 10 seconds to have a signal, but enough to send and receive text messages (repeat the search) This method is applicable to most cell phones.
Method 2: Hold down the listen and end keys and press 139 244 or 138 133 or 1980 7889
This is the popular key, generally used in schools are not changed, so you may want to try (higher examinations and special electronic detection equipment, a use of the alarm)
Method 3: The application of this method is relatively narrow, is the use of Bluetooth to allow the phone to achieve the purpose of use, if you just want to transfer files and so on you can open the Bluetooth for transmission, but this is only applicable to file transfer and a small range of contact between, in addition, if the installation of Bluetooth messaging software is also possible to send messages.
Jammer mart professional production of a variety of shielding equipment including wifi signal jammer, etc., welcome to consult