Hi, Recently I have updated my Nexus 6p to Android 8.0.0. I am observing pop-up saying invalid input by Sim toolkit for every 30 seconds(see the attachment). I tried rebooting the mobile multiple times, reinserted sim card, and did factory reset but of no use. I am in India and using Airtel Sim. Is the issue with sim or mobile? Any help on how to resolve is really appreciated.