Why did my iPhone go black?

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Tags

1. #iphone
2. #screen
3. #reset
4. #caused
5. #holding
6. #perform
7. #power
8. #quick
9. #appear
10. #problem
11. #black
12. #hardware
13. #there
14. #until
15. #apple
16. #usually
17. #button
18. #volume
19. #pressing