Top half of phone screen unresponsive

It seems like your phone's display is faulty and needs to be repaired or replaced. A few things could be causing the top half to become unresponsive:

• If the phone was recently dropped, there may be internal damage to the display connector cables or components. Impact can disrupt connections.
• The digitizer touch layer that detects touch input could be damaged. This is often a separate layer from the LCD display itself.
• Liquid damage or corrosion may have occurred on the display connectors or controller chip.
• An underlying software or graphics issue is less likely since a reset did not resolve it.

Before replacing the screen, I would recommend:

• Trying a forced reboot by holding power+vol down for 20+ sec. This may reset any software glitches.
• Visually inspecting the top of the screen for cracks/separated glass. External damage points to impact.
• Backing up data and testing a restore in case it's an odd software problem.
• Reseating the display cable connections internally after reading the iFixit repair guide.

If the problem persists after troubleshooting, a screen replacement likely is required.

Use reputable parts and follow guides carefully to avoid any further damage. This should fully restore the touch function.

iPhone 11 Screen

My top half of my phone is not reading my senses for my touch