Same problem faced in AndriodN updates 6.7.8.16 and 6.7.8.18

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6

2017-08-19 14:39

On 16 August I updated my M3 Note to 6.7.8.16 and on 18 August to 6.7.8.18 in both cases I faced same issue that sim cards are not detectin. No signal showing and also sound is cracking
       so resolve this next update. I downgraded my phone lower version 6.7.6.13