Cell phones are a common problem in prison: family visits are delivered via mail on baby diapers, smuggled into prison guards... The prisoners seem to have a lot of options to get the phone, and the land cannot be changed. cell phone jammer with prison guards to help maintain a safe internal environment.
In prison, the prisoners were always given education, and even gave up the phone - no. Therefore, officials must take strong action to directly prohibit unauthorized calls. The jammer car remote control works on these devices because the device is the most powerful way to prevent calls.