diff --git a/homeassistant/components/sms/sensor.py b/homeassistant/components/sms/sensor.py
index fc2310426e3..eb6c6ab22e1 100644
--- a/homeassistant/components/sms/sensor.py
+++ b/homeassistant/components/sms/sensor.py
@@ -3,7 +3,7 @@ import logging
 
 import gammu  # pylint: disable=import-error
 
-from homeassistant.components.sensor import SensorEntity
+from homeassistant.components.sensor import SensorEntity, SensorEntityDescription
 from homeassistant.const import DEVICE_CLASS_SIGNAL_STRENGTH, SIGNAL_STRENGTH_DECIBELS
 
 from .const import DOMAIN, SMS_GATEWAY
@@ -14,48 +14,40 @@ _LOGGER = logging.getLogger(__name__)
 async def async_setup_entry(hass, config_entry, async_add_entities):
     """Set up the GSM Signal Sensor sensor."""
     gateway = hass.data[DOMAIN][SMS_GATEWAY]
-    entities = []
     imei = await gateway.get_imei_async()
-    name = f"gsm_signal_imei_{imei}"
-    entities.append(
-        GSMSignalSensor(
-            hass,
-            gateway,
-            name,
-        )
+    async_add_entities(
+        [
+            GSMSignalSensor(
+                hass,
+                gateway,
+                imei,
+                SensorEntityDescription(
+                    key="signal",
+                    name=f"gsm_signal_imei_{imei}",
+                    device_class=DEVICE_CLASS_SIGNAL_STRENGTH,
+                    unit_of_measurement=SIGNAL_STRENGTH_DECIBELS,
+                    entity_registry_enabled_default=False,
+                ),
+            )
+        ],
+        True,
     )
-    async_add_entities(entities, True)
 
 
 class GSMSignalSensor(SensorEntity):
     """Implementation of a GSM Signal sensor."""
 
-    def __init__(
-        self,
-        hass,
-        gateway,
-        name,
-    ):
+    def __init__(self, hass, gateway, imei, description):
         """Initialize the GSM Signal sensor."""
+        self._attr_device_info = {
+            "identifiers": {(DOMAIN, str(imei))},
+            "name": "SMS Gateway",
+        }
+        self._attr_unique_id = str(imei)
         self._hass = hass
         self._gateway = gateway
-        self._name = name
         self._state = None
-
-    @property
-    def name(self):
-        """Return the name of the sensor."""
-        return self._name
-
-    @property
-    def unit_of_measurement(self):
-        """Return the unit the value is expressed in."""
-        return SIGNAL_STRENGTH_DECIBELS
-
-    @property
-    def device_class(self):
-        """Return the class of this sensor."""
-        return DEVICE_CLASS_SIGNAL_STRENGTH
+        self.entity_description = description
 
     @property
     def available(self):
@@ -78,8 +70,3 @@ class GSMSignalSensor(SensorEntity):
     def extra_state_attributes(self):
         """Return the sensor attributes."""
         return self._state
-
-    @property
-    def entity_registry_enabled_default(self) -> bool:
-        """Return if the entity should be enabled when first added to the entity registry."""
-        return False