diff --git a/requirements.txt b/requirements.txt
index f96da76..1fdf70c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,4 +17,6 @@ urllib3==2.4.0
 pydantic==2.11.3
 langchain==0.3.23
 langchain-groq==0.3.2
-email-validator==2.2.0
\ No newline at end of file
+email-validator==2.2.0
+pydantic-extra-types==2.10.3
+phonenumbers==9.0.3
\ No newline at end of file
diff --git a/tests/test_validation.py b/tests/test_validation.py
index 48407fe..6aa071e 100644
--- a/tests/test_validation.py
+++ b/tests/test_validation.py
@@ -2,11 +2,22 @@ from datetime import date
 
 from pydantic import ValidationError
 import pytest
-from tests.dummy import dummy_passport
+from tests.dummy import dummy_account, dummy_passport
 from validation.from_passport import FromPassport
 
 
 def test_check_expiry_date_after_issue_date() -> None:
     dummy = dummy_passport()
     with pytest.raises(ValidationError):
-        dummy.expiry_date = date(1900, 1, 1)
\ No newline at end of file
+        dummy.expiry_date = date(1900, 1, 1)
+
+def test_invalid_email() -> None:
+    dummy = dummy_account()
+    with pytest.raises(ValidationError):
+        dummy.email = "this is not a valid email account"
+
+def test_invalid_phone_number() -> None:
+    dummy = dummy_account()
+    with pytest.raises(ValidationError):
+        dummy.phone_number = "This should be invalid"
+    dummy.phone_number = "+41 32 333 33 33"
\ No newline at end of file
diff --git a/validation/from_account.py b/validation/from_account.py
index 5e91d4d..2f0a6bd 100644
--- a/validation/from_account.py
+++ b/validation/from_account.py
@@ -1,6 +1,6 @@
 from typing import Literal, Optional, Self
 from pydantic import BaseModel, ConfigDict, EmailStr, Field, model_validator
-
+from pydantic_extra_types.phone_numbers import PhoneNumber
 
 class FromAccount(BaseModel):
     """
@@ -32,5 +32,5 @@ class FromAccount(BaseModel):
     country: str = Field(min_length=1)
 
     name: str = Field(min_length=1)
-    phone_number: str = Field(min_length=6)
+    phone_number: PhoneNumber
     email: EmailStr
\ No newline at end of file
diff --git a/validation/llm_validate.py b/validation/llm_validate.py
index d0d9d8e..f2e155a 100644
--- a/validation/llm_validate.py
+++ b/validation/llm_validate.py
@@ -1,2 +1,7 @@
 # TODO
-# account.reference_currency corresponds to passport.country
\ No newline at end of file
+# account.reference_currency corresponds to passport.country
+
+# account.country ~ passport.country
+
+# account.city is in account.country 
+