confirm caused by firmware update. Can go to samsung service center to resolve it.
		
		
	 
Been there yesterday, got the standard company policy treatment.
Cut and paste from my Samsung Community post:
"
Visited Plaza Sing's service center yesterday 6 Feb 2023 regarding my Note 20 Ultra's green line issue.
Service center agent gave a scripted company policy reply; no warranty, there is no official announcement of such issue, the internet and community feedback is not sufficient to ask for an exception.
As that seems to be the limit on how the service agent can assist, i proceed to ask about formal assistance.
1. Checking the phone (OOW) will cost around SGD $30+, where they will identify if the issue is hardware or software; upon asking how does that help me, i was greeted by a awkward silence (not that i am optimistic, if they are able to identify or acknowledge it as a firmware induced induced issue)
2. Straight to LCD replacement; near SGD $400; 3 to 4 working days. No loan set so prepare a spare phone if going for it. This option is as good as sucking it up and accepting it is user's fault or wear and tear luck.
Both options are not acceptable to me and the agent could not do anything more for me. So i enquire how i could bring this issue up; i was advised to write in to their Samsung CEO email. With a disappointed heart, i left the service center.
It is at this point i questioned why i paid a SGD $1800+ premium for Note 20 Ultra... 
"
Post link here: 
https://r1.community.samsung.com/t5...tra-vertical-green-line/td-p/17990896/page/10