fix

app/src/main/java/com/grigowashere/loratester/LoraApp.java

@@ -42,6 +42,14 @@ public class LoraApp extends Application {
                 peerStatsCache
         );
         commandPoller.start();
+        telemetryUploader.registerPresence();
+        if (networkMonitor != null) {
+            networkMonitor.addListener(online -> {
+                if (online) {
+                    telemetryUploader.registerPresence();
+                }
+            });
+        }
     }
 
     public NetworkMonitor getNetworkMonitor() {

app/src/main/java/com/grigowashere/loratester/TelemetryUploader.java

@@ -299,6 +299,24 @@ public class TelemetryUploader implements TelnetClient.Listener {
         uploadExecutor.execute(() -> uploadTelemetry(payload));
     }
 
+    public void registerPresence() {
+        uploadExecutor.execute(() -> {
+            TelemetryPayload payload = new TelemetryPayload(
+                    settings.getOrCreateDeviceId(),
+                    phoneLabel(),
+                    null,
+                    null,
+                    null,
+                    null,
+                    null,
+                    null,
+                    null,
+                    System.currentTimeMillis() / 1000.0
+            );
+            uploadTelemetry(payload);
+        });
+    }
+
     private static String phoneLabel() {
         String manufacturer = Build.MANUFACTURER != null ? Build.MANUFACTURER : "";
         String model = Build.MODEL != null ? Build.MODEL : "";