About dual-sim 5G availability in iPhone 12
iPhone 12 media review embargo lifted today. The China variants with dual physical sims confirms supporting 5G+4G DSDS outright. However the [review](https://imgur.com/gallery/LKIeXl8) noticed, the 5G SA (standalone) option will be greyed out when both lines are in use. You can enable the SA option by disable the line inside the cellular settings instead of removing the actual sim card.