iphone 12 mini black screen issue

Hello Frederik18,

you need to do a forced reset-

• push and release the VOL up button

• push and release the VOL down button

• push and hold the side button

(right side on iPhone) until you see

the apple logo appear, only then

release the side button

This will force your iPhone 12 mini to forcibly reset and bring your iPhone back to life. Let me know if you need more assistance. Good luck.👍