CompatibilityCheck: Show unknown status if OMAPI feature flag is not found

app-unpriv/src/main/java/im/angry/openeuicc/util/CompatibilityCheck.kt

@@ -87,7 +87,7 @@ internal class HasSystemFeaturesCheck(private val context: Context): Compatibili
             PackageManager.FEATURE_SE_OMAPI_UICC
         )) {
             failureDescription = context.getString(R.string.compatibility_check_system_features_no_omapi)
-            return State.FAILURE
+            return State.FAILURE_UNKNOWN
         }
 
         return State.SUCCESS

app-unpriv/src/main/res/values/strings.xml

@@ -6,7 +6,7 @@
     <string name="compatibility_check_system_features">System Features</string>
     <string name="compatibility_check_system_features_desc">Whether your device has all the required features for managing removable eUICC cards. For example, basic telephony and OMAPI support.</string>
     <string name="compatibility_check_system_features_no_telephony">Your device has no telephony features.</string>
-    <string name="compatibility_check_system_features_no_omapi">Your device has no support for accessing SIM cards via OMAPI. If you are using a custom ROM, consider contacting the developer to determine whether it is due to hardware or a missing feature declaration in the OS.</string>
+    <string name="compatibility_check_system_features_no_omapi">Your device / system does not declare support for OMAPI. This could be due to missing support from hardware, or it could be simply due to a missing flag. See the following two checks to determine whether OMAPI is actually supported or not.</string>
     <string name="compatibility_check_omapi_connectivity">OMAPI Connectivity</string>
     <string name="compatibility_check_omapi_connectivity_desc">Does your device allow access to Secure Elements on SIM cards via OMAPI?</string>
     <string name="compatibility_check_omapi_connectivity_fail">Unable to detect Secure Element readers for SIM cards via OMAPI. If you have not inserted a SIM in this device, try inserting one and retry this check.</string>