diff --git a/Sources/AmiiboService/Public/Clients/AmiiboLiveClient.swift b/Sources/AmiiboService/Public/Clients/AmiiboLiveClient.swift
index ecac350..79e167d 100644
--- a/Sources/AmiiboService/Public/Clients/AmiiboLiveClient.swift
+++ b/Sources/AmiiboService/Public/Clients/AmiiboLiveClient.swift
@@ -372,21 +372,28 @@ private extension AmiiboLiveClient {
                 throw AmiiboServiceError.decoding
             case let urlError as URLError:
                 switch urlError.code {
+                case .cancelled:
+                    throw AmiiboServiceError.cancelled
+                case .cannotParseResponse:
+                    throw AmiiboServiceError.decoding
                 case .cannotFindHost,
                      .cannotConnectToHost,
+                     .dataNotAllowed,
                      .dnsLookupFailed,
+                     .internationalRoamingOff,
                      .networkConnectionLost,
                      .notConnectedToInternet,
+                     .secureConnectionFailed,
                      .timedOut:
                     throw AmiiboServiceError.notAvailable
                 default:
-                    throw AmiiboServiceError.unknown
+                    throw AmiiboServiceError.unknown(String(describing: urlError))
                 }
             default:
-                throw AmiiboServiceError.unknown
+                throw AmiiboServiceError.unknown(String(describing: clientError.underlyingError))
             }
         default:
-            throw AmiiboServiceError.unknown
+            throw AmiiboServiceError.unknown(String(describing: error))
         }
     }
     
diff --git a/Sources/AmiiboService/Public/Errors/AmiiboServiceError.swift b/Sources/AmiiboService/Public/Errors/AmiiboServiceError.swift
index aa0e432..e2817d9 100644
--- a/Sources/AmiiboService/Public/Errors/AmiiboServiceError.swift
+++ b/Sources/AmiiboService/Public/Errors/AmiiboServiceError.swift
@@ -28,8 +28,8 @@ public enum AmiiboServiceError: Error {
     case notFound
     /// The server returned an undocumented HTTP status code.
     case undocumented(_ statusCode: Int)
-    /// An unexpected error that does not fall into any other category.
-    case unknown
+    /// An unexpected error that does not fall into any other category, with a description of the underlying error.
+    case unknown(_ description: String)
 }
 
 // MARK: - Equatable
@@ -50,7 +50,7 @@ extension AmiiboServiceError: LocalizedError {
         case .notAvailable: "The backend service is currently unreachable due to a network or server issue."
         case .notFound: "No results were found matching the given filter criteria."
         case .undocumented(let statusCode): "The server returned an undocumented HTTP status code: \(statusCode)."
-        case .unknown: "An unexpected error occurred."
+        case .unknown(let description): "An unexpected error occurred: \(description)"
         }
     }
 
diff --git a/Tests/AmiiboService/Cases/Public/Services/AmiiboServiceMockTests.swift b/Tests/AmiiboService/Cases/Public/Services/AmiiboServiceMockTests.swift
index df8a219..3cdf2f7 100644
--- a/Tests/AmiiboService/Cases/Public/Services/AmiiboServiceMockTests.swift
+++ b/Tests/AmiiboService/Cases/Public/Services/AmiiboServiceMockTests.swift
@@ -261,6 +261,6 @@ private enum Errors {
         .notAvailable,
         .notFound,
         .undocumented(500),
-        .unknown
+        .unknown("An underlying error description.")
     ]
 }