The iPhone 12 won’t support 5G in dual SIM mode at launch

Image: Apple

Apple’s latest iPhone supports 5G networks, but not if you use the device in dual SIM mode, according to an internal Apple training document revealing the issue that began circulating on Reddit over the weekend.

Dual SIM mode is a feature introduced on the iPhone line with the iPhone XS, and it’s useful for those traveling or staying abroad (or people who maintain work and personal lines on the same device) by allowing both a physical Nano SIM line and data-only service from another carrier using an eSIM simultaneously.

But that apparently interferes with the iPhone 12’s ability to run on 5G networks, at least for now. Here’s the wording from the Apple document:

“Does 5G work with Dual SIM?”

When using two lines in Dual SIM mode, 5G…

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