With only a handful of networks supporting 5G now, as well as coverage being quite limited, even in major cities, iPhone 12 users may want to use two 5G SIMs in order to maximise their coverage or mix up their call and data usage. While this may seem like a minor inconvenience to some, it could come as a major blow to iPhone 12 fans who want to use a dual-sim smartphone to have separate work and personal lines. Suppose the limitation gets officially confirmed (and it looks like it will, as MacRumors received independent confirmation on the subject). So whatever your iPhone having a single or dual SIM card, 5G is out of the question for Indian users.
5G is automatically enabled on iPhone 12 and iPhone 12 Pro models, as long as users have chosen a supported wireless carrier that offers a 5G network.
According to the answer, 5G data will not be available if you use dual SIM cards, regardless of whether one or both subscriptions support 5G technology.
By means of an integrated SIM (eSIM) and a reversible SIM card slot, the new generation iPhone 12 series supports this, rather than forcing users to mount dual nano SIM cards. Otherwise, an LTE connection will be used.
The iPhone 12 recently launched with a bunch of improvements, and of course, 5G support. The good news is that "Smart Data" can be toggled off and disabled by users.
According to the company, "the Apple Limited Warranty covers your iPhone and Apple-branded accessories against manufacturing defects for one year from the date you bought your product".