How can I tell if my iPhone is being hacked?

since two days i hear click and click the whole night on my iphone in the morning my bsttery emptied from 61 to 7 percent who was doing it i think someone is accessing my phone remotely

I did not do anything, it was happening last night the phone screen will lit and close as if someone is browsing my phone except it was not me and I kept hearing the sound of clicking i wonder if someone hacked my phone or Apple doing it

[Edited by Moderator]