The ordinary one wasn't recognized so I broke out the micro SIM and tried it in my iPhone. It works flawlessly.
Then I used a micro-sim adapter to put it in my GNex again. Not working again. Then I tried to place the micro SIM manually in my GNex. Moved it a little bit — airplane mode on — airplane mode off. Again nothing. I also tried it with another micro SIM card. Again no luck.
The only type of SIM cards which seem to work are the old ones with the bigger connectors but sadly I can't get one of these anymore for my contact since they are all combi-SIM cards now.
So does anyone have an idea how to get that SIM card running in my GNex? It's too young to retire it :/
This is the equipment: