NSW is looking to introduce camera technology capable of detecting drivers using mobile phones while driving. The bill has already been introduced into parliament in March.
Full article here: https://www.transport.nsw.gov.au/news-and-events/media-releases/call-goes-out-to-tackle-mobile-phone-use-cars
Posted here for interest-sakes only. 
I believe there is one above the intersection of the Hume Hwy and Stacey st Bankstown.
Likely testing
Testing from January to April 2019. How will these cameras be identified on WAZE?
https://practicalmotoring.com.au/car-news/mobile-phone-detection-cameras-on-trial-in-nsw/
Assuming they get out of the testing phase and actually introduced onto the roads, they’d be “dummy cameras” until Waze’s app supports these camera types. This is just my opinion, but we shouldn’t really have to warn people not to touch their phone while driving. But we seem to do the same thing with speed cameras. Who knows, maybe HQ will support it.
The camera on the M4 is beside an existing Speed Camera.
Clune Ross Rd bridge or something like that.
Here’s some suggestions to upvote to assist with this reported problem.
https://waze.uservoice.com/forums/59223-waze-suggestion-box/suggestions/41012221-additional-camera-types-with-names-and-tts-define
https://waze.uservoice.com/forums/59223-waze-suggestion-box/suggestions/39158647-phone-detection-cameras
https://waze.uservoice.com/forums/59223-waze-suggestion-box/suggestions/39329725-in-nsw-australia-we-now-have-mobile-phone-detectio