My screen is black after unpluging from the charger
Hello people, this is the situation:
1. I put my iPhone 6s (iOS 10.3.3) to charge. -ok
2. I check later, and it says 100% charged. -ok
3. I unplug the phone from the charger. -ok
4. I press the home button once, no response - THE SCREEN IS BLACK. - this is the problem
5. I press home button for the second time - IT WORKS EVERYTHING NORMAL (it displays the lock screen). - ok
What is happening on the step 4?