The term “eSIM” stands for “Embedded Subscriber Identification Module”. This is a hardware component which is built into modern mobile phones and tablets supporting eSIM services. 
Currently this is the iPhone 10 range of XS, XS Max and XR  and also iPhone 11 with an update to iOS 13.1.3. The Android Google Pixel 3, 3a and 4 is also supported. Compatible handsets will grow rapidly over the next few months as other manufacturers will launch phones with embedded SIMs. 

Steps for setting APN on iPhone 10S or 11.

1: Open Settings

2: Select "Mobile Data" ( "Cellular" if you have a USA iPhone )

3: Ensure that "Data Roaming" is set to ON

4: Select the installed plan

5: Select "Mobile Data Network" ( "Cellular Data Network" if you have a USA iPhone )

6: Check your plan to see what the APN should be set to."globaldata" is the required APN for most plans

7: Enter the APN e.g. as “globaldata" ( without the " quotation marks). Leave Username and Password blank

8: If you intend to use a Personal Hotspot ( tethering ) then also set the Personal Hotspot APN to the same values

We have a service for 230 countries around the world. Please search and I am sure that your country will be covered. As well as that country the same plan may well cover numerous other destinations.
All major credit and debits cards can be used during our very secure check out process. All prices include UK VAT and are shown in USD (United States Dollars)