iPhone won’t turn on
Why my iPhone 14 has a black screen and won’t turn on after charging all night on a undamaged combo phone/watch charging stand?
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If your iPhone is unresponsive, connect your iPhone directly to its Power Adapter via a charging cable - and allow the iPhone to charge. Then, while still connected to external power, try a forced-restart:
Force restart iPhone - Apple Support
If iPhone still doesn’t turn on, or if it gets stuck during start up, see the Apple Support article If your iPhone, iPad, or iPod touch won’t turn on or is frozen. Or if your iPad isn’t working correctly after you restart it, see the iPad Support website.
If you continue to experience difficulties, you will need to seek assistance directly from from Apple Support. You can contact the Support Team using the Support link at top-right or bottom-left of this page.
Alternatively, if you have access to another Apple device, you can initiate and manage your support cases using the excellent Apple Support App. If not already installed, the App can be downloaded from the App Store:
https://apps.apple.com/gb/app/apple-support/id1130498044
You might also visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to test and assess your iPhone: