chore: improve variant compare

README.md

@@ -5,13 +5,17 @@ A fully free and open-source Local Profile Assistant implementation for Android
 There are two variants of this project, OpenEUICC and EasyEUICC:
 
 |                               |            OpenEUICC            |      EasyEUICC      |
-|:------------------------------|:-----------------------------------------------:|:-----------------:|
+| :---------------------------- | :-----------------------------: | :-----------------: |
 | Privileged                    | Must be installed as system app |         No          |
 | Internal eSIM                 |            Supported            |     Unsupported     |
-| External (Removable) eSIM     |                    Supported                    |     Supported     |
+| External eSIM [^1]            |            Supported            |      Supported      |
 | USB Readers                   |            Supported            |      Supported      |
 | Requires allowlisting by eSIM |               No                |  Yes -- except USB  |
-| System Integration            | Partial (carrier partner API unimplemented yet) |        No         |
+| System Integration            |          Partial [^2]           |         No          |
+| Minimum Android Version       |      Android 11 or higher       | Android 9 or higher |
+
+[^1]: Also known as "Removable eSIM"
+[^2]: Carrier Partner API unimplemented yet
 
 Some side notes:
 1. When privileged, OpenEUICC supports any eUICC chip that implements the SGP.22 standard, internal or external. However, there is __no guarantee__ that external (removable) eSIMs actually follow the standard. Please __DO NOT__ submit bug reports for non-functioning removable eSIMs. They are __NOT__ officially supported unless they also support / are supported by EasyEUICC, the unprivileged variant.