I have had good results a cople of times when having to use a Samsung service centre (in Indonesia and in Malaysia). Now my S21 fe has succumbed to the dreaded thin vertical lines on the screen, so I thought I would check with local "customer service" (in Paknam) before the next step of a factory reset - or taking a hammer to it.

 

Place is empty save for 3 staff, who make me take a queue ticket before they will talk to me. Not a good look........

 

I show the phone screen, they immediately go "oh, that. B7,000, you have to go to a mall (?no idea what that meant), and parts take a long time to come." Clearly could not give a ****. A Thai shrug that meant "just go away and leave us alone".

 

This is an issue affecting many thousands of customers globally, who appear to have a problem with Amoled screens around the 2-year mark. Samsung can't be a#sedto find a fix and their local "service " "personnel" are a disgrace.

 

I've been on Samsung for decades but tomorrow, I'm off to find any sub-B7,000 phone (even a Chinese one) that might work. Samsung can stick it in the appropriate orifice.

Alternative would be to source and replace the screen yourself. Price for OLED screen  with fingerprint support from around 2500 to 4000 baht. Fitting, I imagine, no more than 500 baht.