Cell phone scrambling devices are smart and useful in some situations, but the problem is that not everyone has the right to use them anywhere. In the frequency band blocked by the jammer, all related mobile electronic communications equipment will lose their effectiveness.
They can be equipped in some security forces, prisons, and battlefields to avoid troublesome situations related to the equipment. In the US-Iraq war, the use of cell phone jammer played an important role. Installing a cell phone scrambler in the prison can help prisoners communicate with the outside to avoid unnecessary security incidents, such as escape, drug dealing.
