First of all, what are your requirements? After years of development, there are many types of price jammers, such as mobile phone signal jammers and professional mobile phone buttons. Different sources of interference from mobile devices can be used in different places. If you want to block cell phone signals in the room, a small cell phone jammer is enough. However, if you want to use a larger device, you need a professional mobile jammer.
Second, where do you want to use it? If you want to transport it and use it elsewhere, a portable jammer will do. Some of them combine interference from mobile devices and gps blockers, and some of them combine mobile device blockers with Wi-Fi blockers. You should consider your situation and choose the correct function. This means that you cannot buy, sell or use jammers in these countries. Before buying a jammer, you need to check whether it is legal. The last one is your budget, the price of different insertion machines ranges from tens of dollars to thousands of dollars. You need to consider the price you can afford, and then choose the right one for you.