moved _getRepeaterPrefixMatchNearLocation since I don't need the function anywhere else anymore.

lib/utils/contact_search.dart

@@ -1,6 +1,3 @@
-import 'package:latlong2/latlong.dart';
-
-import '../connector/meshcore_protocol.dart';
 import '../models/contact.dart';
 
 export 'contact_filter_types.dart';
@@ -46,55 +43,3 @@ String? _extractHexPrefix(String query) {
   if (!RegExp(r'^[0-9a-f]+$').hasMatch(cleaned)) return null;
   return cleaned;
 }
-
-Contact? getRepeaterPrefixMatchNearLocation(
-  List<Contact> contacts,
-  int pubkeyFirstByte, {
-  LatLng? searchPoint,
-  bool preferFavorites = false,
-}) {
-  final candidates = contacts
-      .where(
-        (c) =>
-            c.publicKey.isNotEmpty &&
-            c.publicKey.first == pubkeyFirstByte &&
-            (c.type == advTypeRepeater || c.type == advTypeRoom),
-      )
-      .toList();
-
-  if (candidates.isEmpty) return null;
-
-  candidates.sort((a, b) {
-    if (preferFavorites) {
-      final favA = a.isFavorite ? 1 : 0;
-      final favB = b.isFavorite ? 1 : 0;
-      final favCompare = favB.compareTo(favA);
-      if (favCompare != 0) return favCompare;
-    }
-
-    final seenCompare = b.lastSeen.compareTo(a.lastSeen);
-    if (seenCompare != 0) return seenCompare;
-
-    return a.publicKeyHex.compareTo(b.publicKeyHex);
-  });
-
-  if (searchPoint == null) {
-    return candidates.first;
-  }
-
-  final distance = Distance();
-  Contact best = candidates.first;
-  var bestDistance = double.infinity;
-
-  for (final c in candidates) {
-    if (c.hasLocation && c.latitude != null && c.longitude != null) {
-      final d = distance(searchPoint, LatLng(c.latitude!, c.longitude!));
-      if (d < bestDistance) {
-        bestDistance = d;
-        best = c;
-      }
-    }
-  }
-
-  return best;
-}

lib/widgets/snr_indicator.dart

@@ -2,10 +2,63 @@ import 'package:flutter/material.dart';
 import 'package:latlong2/latlong.dart';
 
 import '../connector/meshcore_connector.dart';
-import '../utils/contact_search.dart';
+import '../connector/meshcore_protocol.dart';
 import '../l10n/l10n.dart';
+import '../models/contact.dart';
 import 'signal_ui.dart';
 
+Contact? _getRepeaterPrefixMatchNearLocation(
+  List<Contact> contacts,
+  int pubkeyFirstByte, {
+  LatLng? searchPoint,
+  bool preferFavorites = false,
+}) {
+  final candidates = contacts
+      .where(
+        (c) =>
+            c.publicKey.isNotEmpty &&
+            c.publicKey.first == pubkeyFirstByte &&
+            (c.type == advTypeRepeater || c.type == advTypeRoom),
+      )
+      .toList();
+
+  if (candidates.isEmpty) return null;
+
+  candidates.sort((a, b) {
+    if (preferFavorites) {
+      final favA = a.isFavorite ? 1 : 0;
+      final favB = b.isFavorite ? 1 : 0;
+      final favCompare = favB.compareTo(favA);
+      if (favCompare != 0) return favCompare;
+    }
+
+    final seenCompare = b.lastSeen.compareTo(a.lastSeen);
+    if (seenCompare != 0) return seenCompare;
+
+    return a.publicKeyHex.compareTo(b.publicKeyHex);
+  });
+
+  if (searchPoint == null) {
+    return candidates.first;
+  }
+
+  final distance = Distance();
+  Contact best = candidates.first;
+  var bestDistance = double.infinity;
+
+  for (final c in candidates) {
+    if (c.hasLocation && c.latitude != null && c.longitude != null) {
+      final d = distance(searchPoint, LatLng(c.latitude!, c.longitude!));
+      if (d < bestDistance) {
+        bestDistance = d;
+        best = c;
+      }
+    }
+  }
+
+  return best;
+}
+
 class SNRUi {
   final IconData icon;
   final Color color;
@@ -67,6 +120,15 @@ class SNRIndicator extends StatefulWidget {
 }
 
 class _SNRIndicatorState extends State<SNRIndicator> {
+  bool _isValidSelfLocation(double lat, double lon) {
+    const double epsilon = 1e-6;
+    return (lat.abs() > epsilon || lon.abs() > epsilon) &&
+        lat >= -90.0 &&
+        lat <= 90.0 &&
+        lon >= -180.0 &&
+        lon <= 180.0;
+  }
+
   @override
   Widget build(BuildContext context) {
     final directRepeaters = widget.connector.directRepeaters;
@@ -166,11 +228,13 @@ class _SNRIndicatorState extends State<SNRIndicator> {
                 final selfLon = widget.connector.selfLongitude;
 
                 LatLng? selfPoint;
-                if (selfLat != null && selfLon != null) {
+                if (selfLat != null &&
+                    selfLon != null &&
+                    _isValidSelfLocation(selfLat, selfLon)) {
                   selfPoint = LatLng(selfLat, selfLon);
                 }
 
-                final contact = getRepeaterPrefixMatchNearLocation(
+                final contact = _getRepeaterPrefixMatchNearLocation(
                   allContacts,
                   repeater.pubkeyFirstByte,
                   searchPoint: selfPoint,