Why is there a green line on my phone?

More Questions

• What is green line and purple line in metro?
• Why is there a line on my phone screen?
• Where the mind is without fear line by line explanation?
• How to hack a phone with phone number?
• What happens if head line and life line not joined?
• How to clone android phone to new phone?
• What is difference between line and line segment?
• How to control other phone with my phone?
• What is top line and bottom line?
• What is horizontal line and vertical line?