Imagine the following situation. You are sitting in a nice restaurant and you want to interrupt your cell phone call because the phone caller keeps talking about their problems and doesn't want to stop doing so. In this case, you need a cell phone jammer. Later you think you are being followed and you don't want to allow it. In this case, a GPS signal blocker is required.
The first thing you should know here is that if you buy them separately, the price may even be slightly lower than all of these jammers, but all you have to do is know that it is much more comfortable. Also, some of the latest and more expensive models give you the option to block two or three frequencies at a time, and we think that's a great thing. There are some signal jammers that block all 10 frequencies.
But nothing is perfect, and we should tell you that the more frequently you block at the same time, the faster the battery will discharge. So if you're looking for a portable universal frequency shield, pay attention to the battery specifications, as you don't need a signal shield that charges every half an hour. Also look for a lighter adapter so you can charge your device in your car.