Is there any way to stop phone signals?

Hi all! I'm interested in the possibility of jamming smartphone signals. Is there any way to mute the phone? How to remove all signs? Is there any way?

Of course, there are such ways. Different signal jammers create certain obstacles in data communication. You need to know the frequency range to spot calls. Also, it would be best if you used special equipment for this. For example, mobile phone jammers can easily block calls within a set range. During the operation of the equipment, there will be no third-party sound. It creates only electronic interference.