It’s getting worse.
Since yesterday my FP2 did not detect my Telekom (D) SIM card at all. Before that i did not get a service with this SIM card, but the card itself was detected.
I tried to change the SIM card slots, tried to switch off and let the battery out of the phone for some time. …by the way, ther seems to be another bug: i switched back on the phone (just my austrian provider, mobile data roaming off) and i was hours back in time. I had to manually set the time.
I will try the SIM card with an other phone when back home. The SIM is about 6 months old.