After a month of calling o2 customer services every day I have eventually got my watch to work properly.
No thanks to o2 may I add.
The problem is with the update installed with text and call on other devices.
Anyone who has had the same problem as me getting the watch and phone to connect using the o2 network data connection should try this. It worked for me. Uninstall this update. When the update for text and call for other devices has been removed. The option for WiFi calling preferred then changes to mobile network calling preferred. Select this option.
Make sure that auto update is not selected for galaxy store apps.
Then got to watch advanced settings on the phone and select remote connection. This is important. Press screen on the text not on the slider. This should take you to a screen and the bottom section has a slider for using remote connection when Bluetooth is turned off. Select this.
Reboot phone and watch and viola I now have a remote connection to make calls with out my phone next to watch.
PLEASE NOTE STAFF IN FARGATE SHEFFIELD BRANCH THAT THE WATCH DOES HAVE THIS CAPABILITY. PLEASE IN FUTURE DO YOUR HOMEWORK BEFORE TELLING CUSTOMERS RUBBISH AND THEN PUTTING PHONE DOWN ON THEM FOR SIMPLY HAVING THE ORDASITY TO DISAGREE WITH YOU.
