One UI 5.1 released for S21 Ultra in other regions but in Pakistan we are still waiting for it even feb security patch has not been released yet. Pathetic services by Samsung Pakistan.
For those constantly posting about Samsung Goodlock app, you can use Goodlock modules by downloading their apks and using a 3rd party launcher. I am using them all for the last 2 years and they make you phone extremely fun to use.
Samsung ney yeh option aab remove kardi hai. Iphone ya oppo/vivo/chinese phone mein sim laga kaar chnage kardy air phir wapis apny mobile mein sim laga dein toh change ho jayay ga.