How can I extend warranty in my A12. I just purchased it 2 months ago. I heard that warranty can be extended for 1 more year.

About 15 months ago I bought galaxy m21 and after 2 days of android 12 update, it got blacked out entirely. First it started to hang on logo and being rebooted, then shut down. I tried contacting service centres, they informed that the motherboard ha...