Apple declared to support dual SIM card at the iPhone XS announcement event and shared some details.
First of all, the solution requires one SIM card slot. The user inserts a physical SIM equipped with Apple 's eSIM technology. The company currently uses eSIM technology on both the iPad and Apple Watch, and is offering it to the iPhone for the first time.
As expected by analyst Ming-Chi Kuo, iPhone XS supports Dual SIM Dual Standby (DSDS), which automatically activates a specific SIM card when the phone enters. The active line is also displayed in the called number. DSDS technology offers many benefits to end users. Most notably, you can move across the border and coverage zone without replacing the SIM card.
Chinese users need to use two physical SIM cards (one on each side of the iPhone's SIM card slot) because Apple does not have authorization to launch eSIM in that country .
Unfortunately, for those who are looking forward to the dual SIM feature, a small footnote on the Apple site reveals that the eSIM features will be disabled on startup. The company plans to enable this feature through future iOS 12 software updates, but states that it can not present concrete schedule for release.
In irrelevant notes, the new iPhone XS and XS Max can be charged faster than the iPhone X in combination with a compatible wireless charger. The exact increase in power is not yet known, but it may be 9 W or 10 W which is the general output level of Qi …