I always put my verizon phone on silent while in the sactuary. It does not inerfere with the sound system like my nextel does. I understand everyone's logic on why or why not to do this or that. However, I don't even look at my phone till after the service. I leave it on so I can see who called while I was in service. Cell phones are just like anything else, if you allow it to, it can become a distraction, Vibrate does make noticeable noise and if you have a phone with a SIM card just turn it off or leave it in the car cause it will cause feedback in the sound system. Nothing should interfere with God's time.