Rumours of Apple finally adopting dual SIM card support for its iPhone have been floating around for a while. However, evidence found within iOS 12 developer beta 5 suggests that the feature might be coming to future iPhone models .
According to 9to5Mac, the discovery was made in a diagnostics reports. The report makes two references to the existence of a second SIM card tray as “second SIM status” and “second SIM tray status”. The report of the second SIM tray does seem to still be on a software level for now, but there’s no denying the fact that Apple is clearly getting ready to jump on to the dual SIM bandwagon for future iPhones.
Having an iPhone with the Dual SIM card feature would also help Apple boost its sales in countries within Asia, Africa, and the Middle East, where non-iOS devices with the dual SIM feature are exceedingly popular among smartphone users.

There’s no word as to when Apple may want to make this feature available, but seeing how Apple’s annual iPhone event just a month away, there’s a possibility that we could hear more about the feature then. Who knows, it could even make its way into the rumoured 6.5-inch “iPhone X Plus”.