From 7feaf71b9e601cc56c2fbd719e03d4def3ae0e2f Mon Sep 17 00:00:00 2001
From: Erik Montnemery <erik@montnemery.com>
Date: Wed, 27 May 2026 11:27:34 +0200
Subject: [PATCH] Make TrackerEntity in_zones win over lat/long (#172313)

---
 .../components/device_tracker/entity.py       | 16 ++++++++------
 .../components/device_tracker/test_entity.py  | 22 ++++++++++++++++---
 .../mobile_app/test_device_tracker.py         |  6 ++---
 3 files changed, 31 insertions(+), 13 deletions(-)

diff --git a/homeassistant/components/device_tracker/entity.py b/homeassistant/components/device_tracker/entity.py
index 86c87b4653a4..1b88346e4e0c 100644
--- a/homeassistant/components/device_tracker/entity.py
+++ b/homeassistant/components/device_tracker/entity.py
@@ -221,8 +221,8 @@ class TrackerEntity(
         """Return the entity_id of zones the device is currently in.
 
         The list may be in any order; the base class sorts it by zone radius
-        and discards zones which do not exist. Ignored if latitude and
-        longitude are both set.
+        and discards zones which do not exist. Takes precedence over latitude
+        and longitude when set (including when set to an empty list).
         """
         return self._attr_in_zones
 
@@ -252,11 +252,7 @@ class TrackerEntity(
     @callback
     def _async_write_ha_state(self) -> None:
         """Calculate active zones."""
-        if self.available and self.latitude is not None and self.longitude is not None:
-            self.__active_zone, self.__in_zones = zone.async_in_zones(
-                self.hass, self.latitude, self.longitude, self.location_accuracy
-            )
-        elif (zones := self.in_zones) is not None:
+        if (zones := self.in_zones) is not None:
             zone_states = sorted(
                 (
                     zone_state
@@ -270,6 +266,12 @@ class TrackerEntity(
                 None,
             )
             self.__in_zones = [z.entity_id for z in zone_states]
+        elif (
+            self.available and self.latitude is not None and self.longitude is not None
+        ):
+            self.__active_zone, self.__in_zones = zone.async_in_zones(
+                self.hass, self.latitude, self.longitude, self.location_accuracy
+            )
         else:
             self.__active_zone = None
             self.__in_zones = None
diff --git a/tests/components/device_tracker/test_entity.py b/tests/components/device_tracker/test_entity.py
index 0f136a3470fb..690e19f30122 100644
--- a/tests/components/device_tracker/test_entity.py
+++ b/tests/components/device_tracker/test_entity.py
@@ -683,15 +683,31 @@ async def test_load_unload_entry_tracker(
             None,
             1.0,
             2.0,
+            STATE_HOME,
+            {
+                ATTR_SOURCE_TYPE: SourceType.GPS,
+                ATTR_GPS_ACCURACY: 0,
+                ATTR_IN_ZONES: ["zone.home"],
+                ATTR_LATITUDE: 1.0,
+                ATTR_LONGITUDE: 2.0,
+            },
+            id="in_zones_wins_over_lat_long",
+        ),
+        pytest.param(
+            None,
+            [],
+            None,
+            50.0,
+            60.0,
             STATE_NOT_HOME,
             {
                 ATTR_SOURCE_TYPE: SourceType.GPS,
                 ATTR_GPS_ACCURACY: 0,
                 ATTR_IN_ZONES: [],
-                ATTR_LATITUDE: 1.0,
-                ATTR_LONGITUDE: 2.0,
+                ATTR_LATITUDE: 50.0,
+                ATTR_LONGITUDE: 60.0,
             },
-            id="in_zones_ignored_when_lat_long_set",
+            id="empty_in_zones_wins_over_lat_long",
         ),
         pytest.param(
             None,
diff --git a/tests/components/mobile_app/test_device_tracker.py b/tests/components/mobile_app/test_device_tracker.py
index 4f72791f8e02..01a9961fa0bb 100644
--- a/tests/components/mobile_app/test_device_tracker.py
+++ b/tests/components/mobile_app/test_device_tracker.py
@@ -172,16 +172,16 @@ async def setup_zone(hass: HomeAssistant) -> None:
             {"in_zones": []},
             "not_home",
         ),
-        # in_zones + gps: gps wins, in_zones recomputed from coordinates
+        # in_zones + gps: in_zones wins, gps coordinates still reported as attributes
         (
             {"gps": [10, 20], "in_zones": ["zone.school"]},
             {
                 "latitude": 10,
                 "longitude": 20,
                 "gps_accuracy": 30,
-                "in_zones": ["zone.home"],
+                "in_zones": ["zone.school"],
             },
-            "home",
+            "School",
         ),
     ],
 )