diff --git a/src/Pages/Properties/Factory.php b/src/Pages/Properties/Factory.php
index c628db1e..53f85f38 100644
--- a/src/Pages/Properties/Factory.php
+++ b/src/Pages/Properties/Factory.php
@@ -25,6 +25,7 @@ public static function fromArray(array $array): PropertyInterface
             Property::TYPE_CHECKBOX => Checkbox::fromArray($array),
             Property::TYPE_URL => Url::fromArray($array),
             Property::TYPE_EMAIL => Email::fromArray($array),
+            Property::TYPE_PHONE_NUMBER => PhoneNumber::fromArray($array),
             default => throw new Exception("Invalid property type: '{$type}'"),
         };
     }
diff --git a/src/Pages/Properties/PhoneNumber.php b/src/Pages/Properties/PhoneNumber.php
new file mode 100644
index 00000000..afef2e1e
--- /dev/null
+++ b/src/Pages/Properties/PhoneNumber.php
@@ -0,0 +1,67 @@
+<?php
+
+namespace Notion\Pages\Properties;
+
+/**
+ * @psalm-type PhoneNumberJson = array{
+ *      id: string,
+ *      type: "phone_number",
+ *      phone_number: string,
+ * }
+ */
+class PhoneNumber implements PropertyInterface
+{
+    private const TYPE = Property::TYPE_PHONE_NUMBER;
+
+    private Property $property;
+
+    private string $phone;
+
+    private function __construct(Property $property, string $phone)
+    {
+        $this->property = $property;
+        $this->phone = $phone;
+    }
+
+    public static function create(string $phone): self
+    {
+        $property = Property::create("", self::TYPE);
+
+        return new self($property, $phone);
+    }
+
+    public static function fromArray(array $array): self
+    {
+        /** @psalm-var PhoneNumberJson $array */
+
+        $property = Property::fromArray($array);
+
+        $phone = $array[self::TYPE];
+
+        return new self($property, $phone);
+    }
+
+    public function toArray(): array
+    {
+        $array = $this->property->toArray();
+
+        $array[self::TYPE] = $this->phone;
+
+        return $array;
+    }
+
+    public function property(): Property
+    {
+        return $this->property;
+    }
+
+    public function phone(): string
+    {
+        return $this->phone;
+    }
+
+    public function withPhone(string $phone): self
+    {
+        return new self($this->property, $phone);
+    }
+}
diff --git a/src/Pages/Properties/Property.php b/src/Pages/Properties/Property.php
index 91bef4a6..54d1c6f5 100644
--- a/src/Pages/Properties/Property.php
+++ b/src/Pages/Properties/Property.php
@@ -141,10 +141,10 @@ public function isEmail(): bool
         return $this->type === self::TYPE_EMAIL;
     }
 
-    // public function isPhoneNumber(): bool
-    // {
-    //     return $this->type === self::TYPE_PHONE_NUMBER;
-    // }
+    public function isPhoneNumber(): bool
+    {
+        return $this->type === self::TYPE_PHONE_NUMBER;
+    }
 
     // public function isCreatedTime(): bool
     // {
diff --git a/tests/Unit/Pages/Properties/PhoneNumberTest.php b/tests/Unit/Pages/Properties/PhoneNumberTest.php
new file mode 100644
index 00000000..393d40d2
--- /dev/null
+++ b/tests/Unit/Pages/Properties/PhoneNumberTest.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace Notion\Test\Unit\Pages\Properties;
+
+use Notion\Pages\Properties\PhoneNumber;
+use Notion\Pages\Properties\Factory;
+use PHPUnit\Framework\TestCase;
+
+class PhoneNumberTest extends TestCase
+{
+    public function test_create(): void
+    {
+        $phone = PhoneNumber::create("415-000-1111");
+
+        $this->assertTrue($phone->property()->isPhoneNumber());
+        $this->assertEquals("415-000-1111", $phone->phone());
+    }
+
+    public function test_change_phone(): void
+    {
+        $phone = PhoneNumber::create("415-000-1111")->withPhone("415-000-2222");
+
+        $this->assertEquals("415-000-2222", $phone->phone());
+    }
+
+    public function test_array_conversion(): void
+    {
+        $array = [
+            "id" => "abc",
+            "type" => "phone_number",
+            "phone_number" => "415-000-1111",
+        ];
+
+        $phone = PhoneNumber::fromArray($array);
+        $fromFactory = Factory::fromArray($array);
+
+        $this->assertEquals($array, $phone->toArray());
+        $this->assertEquals($array, $fromFactory->toArray());
+    }
+}