During a recent prayer service in church, I found that my cell phone reception was so weak that I could barely receive calls or messages.Nothing like this had happened before, but since the phone rang so often at prayer recently, the signal in the church had become very weak
According to your description, it's likely that a phone jammer was placed in the church.Usually once the cell phone jammer is turned on, around five seconds, the signal will start to disappear.I suspect this is a measure taken by church workers to keep quiet during prayer