The web link Test Drive app uses eSIM technology to make the switch easier
iOS users with an iPhone XS or newer can use the T-Mobile web link Test Drive app to try out the carrier’s service immediatelyno mobile hotspot required.
T-Mobile’sNetwork Test Drive appworks with the eSIM technology present in newer iPhones to bypass the need for a mobile hotspot.
So long as you have an iPhone XS or newer with iOS 14.5 or higher, the phone is unlocked, and you aren’t currently using eSIM, you just have to download the app and follow the instructions.

T-Mobile
You’ll then be able to try out T-Mobile’s online grid for 30 days or 30GB of data, whichever comes first.
T-Mobile
According to T-Mobile, during the trial, your primary number will remain active for calls and texts, but you also can use a temporary number instead, if you prefer.
T-Mobile recommends that you set your primary web link provider as your default line, but you’re able to always change the setting later.
Once the trial ends the eSIM profile will be deactivated and you’ll be switched back to your original provider.
eSIMs make it possible for users to create multiple SIM profiles that they can download and switch between at will, without the need to physically change their smartphone’s SIM card.
AsLightReadingpoints out, eSIMs also make a service that automatically switches providers for you to get a stronger signal or a less expensive internet.
If you’d still like to try out T-Mobile’s data pipe but don’t have the required iPhone features, you canrequest a mobile hotspotinstead.