Hi Miarosehill,
Thank you for contacting Apple Support Communities. Based on what you stated, it seems like the iPhone is stuck on a black screen and is not responding. I would recommend you use this article to help troubleshoot the issue.
If your screen is black or frozen, you might need to force restart your device. A force restart won't erase the content on your device. You can force restart your device even if the screen is black or the buttons aren't responding. Follow these steps:
- iPad models with Face ID: Press and quickly release the Volume Up button. Press and quickly release the Volume Down button. Then press and hold the Power button until the device restarts.
- iPhone 8 or later: Press and quickly release the Volume Up button. Press and quickly release the Volume Down button. Then press and hold the Side button until you see the Apple logo.
- iPhone 7, iPhone 7 Plus, and iPod touch (7th generation): Press and hold both the Top (or Side) button and the Volume Down buttons until you see the Apple logo.
- iPad with Home button, iPhone 6s or earlier, and iPod touch (6th generation) or earlier: Press and hold both the Home and the Top (or Side) buttons until you see the Apple logo."
If your iPhone, iPad, or iPod touch won't turn on or is frozen
Please don't hesitate to let us know if the steps resolved your issue or if you need additional assistance.
Cheers.