How to prevent the phone from ringing at inopportune times?

On some important occasions, the phone rings every few minutes. This is a real problem, like at weddings sometimes the groom forgets to even turn off the phone. How to prevent this?

Topsignaljammer  2022.3

Imagine if you need to go to a concert hall and you like to be next to you always ringing your phone, or calling out loud, it makes you very angry, I think so. That's why concert halls are equipped with cell phone jammers. On the one hand, you can prevent the ringtones from disturbing the music performers, and on the other hand, you can ensure a better experience for the audience. If you're enjoying a great concert or a good movie and there's a theater nearby ringing your phone, everyone's going to be pissed. If you think it shouldn't happen in such a place, use a phone jammer.