Chosen Solution

i dropped my phone and the screen turn black.i can hear tthe phone ring,receiving texts,alarm,but i am not able to answer and no even turn it off.It is fixable?

Probably the LCD cable ripped which is a common occurrence on iPhone 5C when dropped. To fix this you will need to get the screen replaced. Guide to replace screen: iPhone 5c LCD and Digitizer Replacement Where to get the part: iPhone 5c LCD and Digitizer