I have a new Samsung Galaxy A33 5G. My wife bought 2 of them in Malaysia. When I put my TPG SIM in the phone I get a message "SIM 1 not provisioned". When I look for "Network operators" I get the message "Error while searching for networks" When I put my wife's Optus SIM in the phone everything works. When I put my TPG SIM back into my old phone everything works. The network mode is LTE/3G/2G (auto connect). I seleted the Network mode 5G/LTE/3G/2G (auto connect). When I scan for Network operators I get 3 available networks:     Virgin - Unable to connect. Try Later     Telstra Mobile - Your SIM card does not allow a connection to this network     Vodafone AU - Your SIM card does not allow a connection to this network After more testing I have noticed that my old phone still accepts calls even though it has no SIM. I tried restarting and a power off, but it still rings when called.   IGNORE THE ABOVE!!! My J7 has the capability for 2 SIM's and I was using the dead overseas SIM, not realising it was there. So my TPG SIM was still in the phone - hence it would ring, and the old SIM would not work in the A33. It is all working now.   ... View more