During the iPhone 12 keynote, Apple repeatedly highlighted 5G support alongside various new features. Now a document has surfaced that shows that 5G does not work in dual-SIM mode.
The iPhone 12 has a brand new design, many new features and offers the best 5G experience on the market. Greg Joswiak, Apple's marketing chief, explained it all as follows:
This is a huge leap for iPhone, delivering the best 5G experience on the market and bringing our most advanced technologies to users who want to get the absolute most out of their iPhone.
Now an Apple Sales FAQ is available on the Internet surfaced, which was made available to retailers and network operators. It shows that all iPhone 12 models support dual-SIM operation, but save 5G. As a reminder: Dual-SIM operation allows users to activate a physical and an electronic SIM card in the iPhone at the same time.
iPhone 12 5G support: Is an update the solution?
Users who have a private and business phone number often use the mode. Vacationers also like to use the feature. But let's get back to the iPhone 12. All four devices support 5G - but the new mobile communications standard does not seem to work in dual SIM mode. is called it in the document:
Does 5G work with dual SIM?
When using two lines in dual SIM mode, 5G data is not supported on either line and falls back to 4G LTE. If customers use eSIM only and have a 5G supported service plan, they will get 5G access.

According to this, users can only access 5G if they have activated a SIM card. It doesn't matter whether this is the eSim or a physical SIM card. For some users, this will certainly be a problem. But it is said to be just a software problem. The anonymous Reddit user claims that Apple will provide an update by the end of the year that will solve this problem. (Image: Apple)