Lenovo k6 power network issue

Hi,
     I recently got Lenovo K6 power ,but Iam facing a issue that some times while calling,network signals of both the networks get lost and comeback after a minute.





This has happned twice .Any solutions





Edit: So this has happened 5 times now.





Every time I call through Jio 4g network ,after 3-4 minutes,network automatically vanishes and have to manually deavticate and activate sim card to get network back?
any advice?


Please help.


Thanks!


I didn't find the right solution from the Internet.


References:

forums.lenovo.com/t5/K-and-Vibe-Z-Series-Smartphones/Lenovo-k6-power-network-issue/m-p/3585987


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