No network

Something to try. Phones connect with cell towers using Access Point Name settings. As a way of checking your settingx Google "Telstra APN settings", if with another provider use that provider's name instead. Record on paper your existing APN settings 100% correctly in case you have to revert. If you have a 5G phone include "5G" in your search. Also if you want to try something else go to Settings, Apps, three dots, show system apps, then search Apps for Phone. Within that find cache and choose to clear cache. You will lose your phone settings so you will lose your contacts so back them up first. Backup is in Settings, Backup and Restore. Use the Google option. Do a full backup. When you have done the fixes come back and choose Restore. You can choose to restore just the contacts.

Maybe take the phone into a Samsung Retailer Store in the City they can usually just as easily trouble-shoot these kinds of hyper-technical phonos telephone sim network cell tower complience issues. But um yeah, might even be as simple as an os software upgrade to the phone 🤷

Am angry 🤨 now. Another problem. My phone number appears on my lock screen 🫨 . Off to the store I went which is a big issue being disabled. The first thing I thought about consultant was omgoodness go home have shower, dress to the code which I'm sure Samsung have. Anyway he fixed 1 problem and before I could get another word out to get the other issue out to wit: My phone number keeps appearing on my lock screen. He was off to speak to someone who I assume was going to spend $$ Notice I said assume. So back to the end of the line I go. Then I thought to h**** with this and went home sulking alas with the same problem.