

Not the parent commentor, but I do something very similar with Tasker. Whenever my phone disconnects from one of a list of Bluetooth connections (like my watch or my car) or even if it just gets a solid jolt to the accelerometers, it goes into lockdown mode. This means the screen gets locked and biometrics can no longer be used to unlock it, requiring the entering of a PIN code to unlock.
Are you 100% certain it’s not a cell phone tower?
These are often just appear as a sheet metal pillar from the outside. If you see a small windowless concrete hut surrounded by a fence somewhere on the property, the church could be leasing to a telecom and hiding the antennas inside their oversized idol. Icing on the cake is that this is often a method the telecoms use to hide their operations from local municipalities so that they can avoid taxes until caught.