My phone rings and vibrates at random

I have the Fairphone for a year and a half, and I’ve had several problems. The lattest is that the phone rings and vibrates indiscriminately and I can´t stop it. I don´t know if it is a hardware or software problem.

Thank you. Best regards.

Is it possible that the sounds and vibrations are linked to notifications? Maybe you miss them because they disappear before you see them. I’m thinking of the “free Wifis available” notification for example.

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