I'm currently on T-Mobile, switched towards the end of last year. T-Mobile promised eSIM support by end of year. They rolled out- in the end of December- support for eSIM for pay-as-you-go accounts only. I'm a T-Mobile One postpaid customer (like most users) and I can't use eSIM. eSIM was a huge draw for me for the new generation of iPhones. I travel a lot, and I want to be able to pop a local SIM card in and get data. The new T-Mobile One plans allow you to get EDGE data speeds and keep using your US number while abroad- combining this plan with a local SIM card for data would allow me to still get my texts/calls on my US number while using LTE data locally when travelling. It's now February. I'm planning my first trip out of the country since getting my iPhone XR. And still no eSIM option. I'll have to remove my T-Mobile SIM card when I get in another country, thus blocking me from getting any regular text messages/calls (just iMessages). And there's still no ETA. Does anyone else find this infuriating? Apple advertised this feature as a dual SIM and the carrier's slow rollout of support makes it unusable.