My iPhone is randomly shutting itself down?

Hey there, personally I am a android phone user I do not know much about iPhone so I have been facing this issue recently which is every time I use to connect my apple wireless headphone it shut down itself first i was facing this same issue with my chatting apps but it resolved on its own. so should i leave it that way?

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DeluxedEdition · 26-30, F

Go to your battery capacity in your settings and see how your battery’s doing and see if it’s running optimally this is what my phone was doing and then I realized that my battery is running on 50% optimization. I just had my phone repaired and they told me I could probably go another month for getting my battery replaced

Ellishhardy55 · 26-30, M

@DeluxedEdition alright let me check if it works...