Samsung, when will the S21 ultra 512 GB be in stock. I have been waiting for 4 months for the 512 gb model. Because samsung removed the SD card slot smaller GB models will not work for me, there is not enough storage on those phones. With taking photos in raw and video in 4K. The smaller models will fill up to fast. I check every week to see if the 512 GB are in stock. This model is never in stock. Please on the next phones add the SD card slot back.