Only latest Sony Xperia phones have 4K display resolution 3840 x 1644. Even IPhone 15 pro max has 2k display. So you can cannot watch in 4k resolution like 4K UHD TV.
This post is from last year, because Samsung Galaxy A53 5G will be one such device in A series which will get 4 major OS upgrades and security updates for 5 years
You should have received the redemption code by now, because I got it two days back and it's valid till 31/12/2022. Use it on Samsung shop or website. Check your mail account.
