With the recent leaks and images rolled out by China Telecom’s Facebook page effectively confirms that the new iPhones will have Dual SIM card slots. We’re not sure if all of the three iPhone models will get that or only the speculated iPhone XS will have the privilege.
But if we look at the images, both recent and older, we can see both the dual-SIM models are different. So we can also see two models with Dual SIM port or it can only be a Chinese variant to get that Dual SIM model. The dual SIM card tray will be backed by a capable modem, supporting dual 4G connectivity and covering China Telecom’s various networks.
Source – GSMArena , ithome, China Mobile