problem - MX5 powers off sporadically

I have a problem with my MX5. Phone powers off sporadically. It shows immediately 0% of battery than screen turns off with waiting circle and at the end phone switches off. I think it’s not related whit software version because I have tried many different with the same effect. From the power graph you can see there is no rule when it happen. Sometimes during operation sometimes when the screen is powered off. During switch off there is no temperature increase. Any idea ? Thank you for help in advance.

@ja_to_on have you tried to restore with clear data?
If it continues maybe it’s a hardware issue and you have to sent it to your reseller

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