diff --git a/apps/ios/Shared/Model/SimpleXAPI.swift b/apps/ios/Shared/Model/SimpleXAPI.swift
index 3c7e5da589..2f2c2934de 100644
--- a/apps/ios/Shared/Model/SimpleXAPI.swift
+++ b/apps/ios/Shared/Model/SimpleXAPI.swift
@@ -487,6 +487,11 @@ func setUserProtoServers(_ serverProtocol: ServerProtocol, servers: [ServerCfg])
     try await sendCommandOkResp(.apiSetUserProtoServers(userId: userId, serverProtocol: serverProtocol, servers: servers))
 }
 
+func addKnownProtoServer(server: String) async throws {
+    let userId = try currentUserId("addKnownProtoServer")
+    try await sendCommandOkResp(.apiAddKnownProtoServer(userId: userId, server: server))
+}
+
 func testProtoServer(server: String) async throws -> Result<(), ProtocolTestFailure> {
     let userId = try currentUserId("testProtoServer")
     let r = await chatSendCmd(.apiTestProtoServer(userId: userId, server: server))
diff --git a/apps/ios/Shared/Views/ChatList/ServersSummaryView.swift b/apps/ios/Shared/Views/ChatList/ServersSummaryView.swift
index a6a353c068..d70bc2380a 100644
--- a/apps/ios/Shared/Views/ChatList/ServersSummaryView.swift
+++ b/apps/ios/Shared/Views/ChatList/ServersSummaryView.swift
@@ -385,9 +385,9 @@ struct SMPServerSummaryView: View {
                     .textSelection(.enabled)
                 if let known = summary.known, !known {
                     Button {
-                        // TODO
+                        addKnownServer()
                     } label: {
-                        Text("TODO Add as known")
+                        Text("Add as known")
                     }
                 }
             } header: {
@@ -497,6 +497,21 @@ struct SMPServerSummaryView: View {
             indentedInfoRow("errors", "\(stats._connSubErrs)")
         }
     }
+
+    func addKnownServer() {
+        Task {
+            do {
+                try await addKnownProtoServer(server: summary.smpServer)
+                await MainActor.run {
+                    // TODO disable button, etc.
+                }
+            } catch let error {
+                await MainActor.run {
+                    alert = errorAddingServerAlert(error)
+                }
+            }
+        }
+    }
 }
 
 private func indentedInfoRow(_ title: LocalizedStringKey, _ value: String) -> some View {
@@ -509,9 +524,20 @@ private func indentedInfoRow(_ title: LocalizedStringKey, _ value: String) -> so
     }
 }
 
+private func errorAddingServerAlert(_ error: Error) -> SomeAlert {
+    SomeAlert(
+        alert: mkAlert(
+            title: "Error adding server",
+            message: "Make sure server address is in correct format (\(responseError(error)))."
+        ),
+        id: "error saving server"
+    )
+}
+
 struct XFTPServerSummaryView: View {
     var summary: XFTPServerSummary
     var statsStartedAt: Date
+    @State private var alert: SomeAlert?
 
     var body: some View {
         List {
@@ -520,9 +546,9 @@ struct XFTPServerSummaryView: View {
                     .textSelection(.enabled)
                 if let known = summary.known, !known {
                     Button {
-                        // TODO
+                        addKnownServer()
                     } label: {
-                        Text("TODO Add as known")
+                        Text("Add as known")
                     }
                 }
             } header: {
@@ -543,6 +569,7 @@ struct XFTPServerSummaryView: View {
                 statsSection(stats)
             }
         }
+        .alert(item: $alert) { $0.alert }
     }
 
     private func sessionsSection(_ sess: ServerSessions) -> some View {
@@ -580,6 +607,21 @@ struct XFTPServerSummaryView: View {
             indentedInfoRow("errors", "\(stats._deleteErrs)")
         }
     }
+
+    func addKnownServer() {
+        Task {
+            do {
+                try await addKnownProtoServer(server: summary.xftpServer)
+                await MainActor.run {
+                    // TODO disable button, etc.
+                }
+            } catch let error {
+                await MainActor.run {
+                    alert = errorAddingServerAlert(error)
+                }
+            }
+        }
+    }
 }
 
 #Preview {
diff --git a/apps/ios/SimpleXChat/APITypes.swift b/apps/ios/SimpleXChat/APITypes.swift
index 9dacedb31b..6998b36249 100644
--- a/apps/ios/SimpleXChat/APITypes.swift
+++ b/apps/ios/SimpleXChat/APITypes.swift
@@ -71,6 +71,7 @@ public enum ChatCommand {
     case apiSendMemberContactInvitation(contactId: Int64, msg: MsgContent)
     case apiGetUserProtoServers(userId: Int64, serverProtocol: ServerProtocol)
     case apiSetUserProtoServers(userId: Int64, serverProtocol: ServerProtocol, servers: [ServerCfg])
+    case apiAddKnownProtoServer(userId: Int64, server: String)
     case apiTestProtoServer(userId: Int64, server: String)
     case apiSetChatItemTTL(userId: Int64, seconds: Int64?)
     case apiGetChatItemTTL(userId: Int64)
@@ -224,6 +225,7 @@ public enum ChatCommand {
             case let .apiSendMemberContactInvitation(contactId, mc): return "/_invite member contact @\(contactId) \(mc.cmdString)"
             case let .apiGetUserProtoServers(userId, serverProtocol): return "/_servers \(userId) \(serverProtocol)"
             case let .apiSetUserProtoServers(userId, serverProtocol, servers): return "/_servers \(userId) \(serverProtocol) \(protoServersStr(servers))"
+            case let .apiAddKnownProtoServer(userId, server): return "/_known server \(userId) \(server)"
             case let .apiTestProtoServer(userId, server): return "/_server test \(userId) \(server)"
             case let .apiSetChatItemTTL(userId, seconds): return "/_ttl \(userId) \(chatItemTTLStr(seconds: seconds))"
             case let .apiGetChatItemTTL(userId): return "/_ttl \(userId)"
@@ -377,6 +379,7 @@ public enum ChatCommand {
             case .apiSendMemberContactInvitation: return "apiSendMemberContactInvitation"
             case .apiGetUserProtoServers: return "apiGetUserProtoServers"
             case .apiSetUserProtoServers: return "apiSetUserProtoServers"
+            case .apiAddKnownProtoServer: return "apiAddKnownProtoServer"
             case .apiTestProtoServer: return "apiTestProtoServer"
             case .apiSetChatItemTTL: return "apiSetChatItemTTL"
             case .apiGetChatItemTTL: return "apiGetChatItemTTL"