I like the s20. It does do very well. I use a lot of the features. I do a lot in manual mode too. And previous models just didn't seem to handle as well as this. But I still like the op7pro for certain situations it does amazing
His isn't that issue. Look at his download mode info. Bootloader l. Which means locked. Any that can be unlocked display a u I believe. I had this issue on another device. It's all caused by Knox guard and buying subsidized device
According to your device it shows oem unlock l. Which means locked. This device looks to have Knox guard mdm service. Looks to be leased. It is permanently locked until removed from Knox mdm server.