Today, Apple released iOS 12.1.2 which is the fourth update in iOS 12 operating system since September. According to Apple’s release notes, they focus on addressing issues with eSIM activation and a cellular connectivity issue to make sure that it’s working properly and smooth experiencing for everyone.
eSIM functionality was first introduced in iOS 12.1 update and then expanded with iOS 12.1.1. Great news for everyone in U.S, all T-Mobile, Verizon, and AT&T espeically Sprint are now supporting the eSIM feature, as well as other multiple carriers around the world.
How to get this iOS 12.1.2? You can go into Settings on your iPhone, click General, you would be able to see software update to click it for download. It should be around 5 minutes awhile your Wi-Fi network is on and ready for download.