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Invalid input pop-up on Nexus 6p

suresh473

Lurker
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.
 

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  • IMG-20170920-WA0000.jpg
    IMG-20170920-WA0000.jpg
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