T-Mobile today announced the launch of its new T-Mobile eSIM app (via VentureBeat), designed to allow iPhone XR, XS, and XS Max users to sign up for T-Mobile as a second carrier via the eSIM feature in the newest iPhones.

U.S. customers who want to try T-Mobile, existing customers that want separate lines, and people traveling to the United States can add T-Mobile as a secondary prepaid line to any iPhone XS, XS Max, or XR using the new T-Mobile app.



T-Mobile is offering three different prepaid eSIM plans:



T-Mobile ONE Prepaid with unlimited voice, text, and data for $70; 30 day expiry

Simply Prepaid with unlimited voice, text, and 10GB of LTE data for $40; 30 day expiry

Tourist Plan with 1000 minutes, unlimited text, and 2GB of LTE data for $30; 21 day expiry

Adding T-Mobile as a secondary carrier on a device is as simple as downloading the T-Mobile eSIM app, entering an email address, and following the activation steps within the app.

At the current time, T-Mobile is only offering prepaid eSIM plans, but the carrier says it will also offer postpaid ongoing eSIM plans in the future. For those looking for an immediate postpaid solution to add an ongoing T-Mobile service plan as a secondary eSIM option to an iPhone, our forum members have outlined a possible solution that some users have been able to get working.

The eSIM, or digital SIM, is designed to let new iPhone users activate a cellular plan from a carrier without the need to use a physical SIM card.

With eSIM support, dual-SIM functionality is available on the iPhone XR, XS, and XS Max, enabled through the existing physical SIM slot and the eSIM in all countries with the exception of China. In China, the new iPhones have two SIM card slots.

T-Mobile is the third U.S. carrier to implement support for the eSIM, following Apple's activation of the feature in iOS 12.1. Verizon and AT&T both added eSIM support to their services last week.

The T-Mobile eSIM app can be downloaded from the App Store for free. [Direct Link]