Red line at the top right corner of my iPhone xr

Kinbeery360 wrote:

Please someone should tell me how to get rid of the red line at the top right corner of my iPhone xr

Reset or a Force Restart,

Force restart iPhone - Apple Support

Restore from backup, restore as new device.

Restore your iPhone, iPad, or iPod to factory settings - Apple Support

Put your iPhone in diagnostics mode - identify potential hardware and software issues

How to put your iPhone in diagnostics mode - Apple Support

for hardware issues take it in—

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"

Genius Bar Reservation and Apple Support Options - Apple

Outside the USA

Contact Apple for support and service - Apple Support

iPhone Repair and Service - Apple Support

iPhone Repair & Service - Apple Support

Check Device Coverage

Check Your Service and Support Coverage - Apple Support