Got the new Sim card which is R15 on Wednesday afternoon. I was hoping that it resolved the whole 5G connectivity issue. But still having issues with MMS or SMS. it's basically hit or miss. Sometimes I get them and sometimes I don't. the problem with my S20 Ultra is that I do get a 5G icon at top, but it appears to be wayyy slower than LTE. The new card does nothing at least for my phone. Also still dropping all data every now and then!