Contacts were on the phone, not the SIM card.
The contacts were imported on both the N96 and the N900 from a Nokia suite back up that I keep on my laptop……I would imagine too many for a SIM card anyway.
Should also point out that I used the same method of installing contacts onto an E7 that I use to have until the USB port went T*ts up. However my car also use to display contact names from the E7perfectly.
As said previously, I have just re-flashed my phone with a new image Version 20.2020.36.2.203.1 so all historic data has gone from the phone.
Give me a few more days and I will look into having another go via the SUU testing download.