I have been experienceing poor coverage in the Ryde area since last Wednesday 20/3/19.
What has happened? Looking at my phone the coverage is either 3G or H+.
My LTE watch won't connect standalone either.
Other people at work also on Optus are experiencing the same issue.
The network coverage map under outages shows planned work at 3 separate towers today. Not sure if any of those towers are the ones you use?