Hello asfand.98,
Thank you for reaching out in Apple Support Communities. I understand you are seeing blue lines on your screen. I can help with this. If this is happening even during start up, it means there is a hardware issue and your iPhone will need to be inspected. You can find the nearest location below.
Thank you for reaching out in Apple Support Communities. I understand you are seeing blue lines on your screen. I can help with this. If this is happening even during start up, it means there is a hardware issue and your iPhone will need to be inspected. You can find the nearest location below.
Apple - Find Locations
Take care.