Good news for common problem with iPhone 13 Pro and iPhone 13 Pro Max where screen goes all white or all green.
Most shops would diagnose this issue as iPhone LCD problem and would recommend LCD replacement.
However, it turns out that in some cases this issue is not caused by the damage to the lcd flex but is in fact an issue that can be solved by a relatively cheaper repair. The solution involves removal of the display, isolation of two connection points on the LCD flex and jumper wire soldering to the connectors. Do not try this at home, it is still a delicate operation but our experienced technicians can safely perform it.
The cost of this repair is half the cost of the LCD replacement.