diff --git a/apps/member/forms.py b/apps/member/forms.py
index c4940bf6..8735dc8e 100644
--- a/apps/member/forms.py
+++ b/apps/member/forms.py
@@ -10,6 +10,7 @@ from django.contrib.auth.forms import AuthenticationForm
 from django.contrib.auth.models import User
 from django.db import transaction
 from django.forms import CheckboxSelectMultiple
+from phonenumber_field.formfields import PhoneNumberField
 from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
 from note.models import NoteSpecial, Alias
@@ -45,6 +46,11 @@ class ProfileForm(forms.ModelForm):
     A form for the extras field provided by the :model:`member.Profile` model.
     """
     # Remove widget=forms.HiddenInput() if you want to use report frequency.
+    phone_number = PhoneNumberField(
+        widget=forms.TextInput(attrs={"type": "tel", "class": "form-control"}),
+        required=False
+    )
+
     report_frequency = forms.IntegerField(required=False, initial=0, label=_("Report frequency"))
 
     last_report = forms.DateTimeField(required=False, disabled=True, label=_("Last report date"))
@@ -72,7 +78,12 @@ class ProfileForm(forms.ModelForm):
         if not self.instance.section or (("department" in self.changed_data
                                          or "promotion" in self.changed_data) and "section" not in self.changed_data):
             self.instance.section = self.instance.section_generated
-        return super().save(commit)
+        instance = super().save(commit=False)
+        if instance.phone_number:
+            instance.phone_number = instance.phone_number.as_e164
+        if commit:
+            instance.save()
+        return instance
 
     class Meta:
         model = Profile
diff --git a/apps/member/templates/member/profile_update.html b/apps/member/templates/member/profile_update.html
index 2f018381..e0975c22 100644
--- a/apps/member/templates/member/profile_update.html
+++ b/apps/member/templates/member/profile_update.html
@@ -10,7 +10,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
         {{ title }}
     </h3>
     <div class="card-body">
-        <form method="post">
+        <form method="post" id="profile-form">
             {% csrf_token %}
             {{ form | crispy }}
             {{ profile_form | crispy }}
@@ -20,4 +20,46 @@ SPDX-License-Identifier: GPL-3.0-or-later
         </form>
     </div>
 </div>
+{% endblock %}
+
+{% block extrajavascript %}
+<!-- intl-tel-input CSS/JS -->
+<script>
+(() => {
+    const input = document.querySelector("input[name='phone_number']");
+    const form = document.querySelector("#profile-form");
+
+    if (!input || !form) {
+        console.error("Input phone_number ou form introuvable.");
+    }
+
+    const iti = window.intlTelInput(input, {
+        initialCountry: "auto",
+        nationalMode: false,
+        autoPlaceholder: "off",
+        geoIpLookup: callback => {
+            fetch("https://ipapi.co/json")
+                .then(res => res.json())
+                .then(data => callback(data.country_code))
+                .catch(() => callback("fr"));
+        },
+        loadUtils: () => import("https://cdn.jsdelivr.net/npm/intl-tel-input@25.5.2/build/js/utils.js"),
+    });
+
+    form.addEventListener("submit", function(e){
+        if (!input.value.trim()) {
+            return;
+        }
+
+        const number = iti.getNumber(intlTelInput.utils.numberFormat.E164);
+        if (number) {
+            input.value = number;
+            form.submit();
+        } else {
+            e.preventDefault();
+            input.focus();
+        }
+    });
+})();
+</script>
 {% endblock %}
\ No newline at end of file
diff --git a/apps/wei/templates/wei/weiregistration_form.html b/apps/wei/templates/wei/weiregistration_form.html
index fae85e0f..4964814d 100644
--- a/apps/wei/templates/wei/weiregistration_form.html
+++ b/apps/wei/templates/wei/weiregistration_form.html
@@ -11,7 +11,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
         {{ title }}
     </h3>
     <div class="card-body">
-        <form method="post">
+        <form id="registration-form" method="post">
             {% csrf_token %}
             {{ form|crispy }}
             {{ membership_form|crispy }}
@@ -22,6 +22,46 @@ SPDX-License-Identifier: GPL-3.0-or-later
 {% endblock %}
 
 {% block extrajavascript %}
+<!-- intl-tel-input CSS/JS -->
+<script>
+(() => {
+    const input = document.querySelector("input[name='emergency_contact_phone']");
+    const form = document.querySelector("#registration-form");
+
+    if (!input || !form) {
+        console.error("Input phone_number ou form introuvable.");
+    }
+
+    const iti = window.intlTelInput(input, {
+        initialCountry: "auto",
+        nationalMode: false,
+        autoPlaceholder: "off",
+        geoIpLookup: callback => {
+            fetch("https://ipapi.co/json")
+                .then(res => res.json())
+                .then(data => callback(data.country_code))
+                .catch(() => callback("fr"));
+        },
+        loadUtils: () => import("https://cdn.jsdelivr.net/npm/intl-tel-input@25.5.2/build/js/utils.js"),
+    });
+
+    form.addEventListener("submit", function(e){
+        if (!input.value.trim()) {
+            return;
+        }
+
+        const number = iti.getNumber(intlTelInput.utils.numberFormat.E164);
+        if (number) {
+            input.value = number;
+            form.submit();
+        } else {
+            e.preventDefault();
+            input.focus();
+        }
+    });
+})();
+</script>
+
 {% if not object.membership %}
 <script>
     $(document).ready(function () {
diff --git a/note_kfet/settings/base.py b/note_kfet/settings/base.py
index 1fa0a0ea..0910132e 100644
--- a/note_kfet/settings/base.py
+++ b/note_kfet/settings/base.py
@@ -305,8 +305,8 @@ PIC_WIDTH = 200
 PIC_RATIO = 1
 
 # Custom phone number format
-PHONENUMBER_DB_FORMAT = 'NATIONAL'
-PHONENUMBER_DEFAULT_REGION = 'FR'
+PHONENUMBER_DB_FORMAT = 'E164'
+PHONENUMBER_DEFAULT_REGION = None
 
 # We add custom information to CAS, in order to give a normalized name to other services
 CAS_AUTH_CLASS = 'member.auth.CustomAuthUser'
diff --git a/note_kfet/templates/base.html b/note_kfet/templates/base.html
index b6762c9b..524cf511 100644
--- a/note_kfet/templates/base.html
+++ b/note_kfet/templates/base.html
@@ -29,6 +29,8 @@ SPDX-License-Identifier: GPL-3.0-or-later
     <link rel="stylesheet" href="{% static "bootstrap4/css/bootstrap.min.css" %}">
     <link rel="stylesheet" href="{% static "font-awesome/css/font-awesome.min.css" %}">
     <link rel="stylesheet" href="{% static "css/custom.css" %}">
+    
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/intl-tel-input@25.5.2/build/css/intlTelInput.css">
 
     {# JQuery, Bootstrap and Turbolinks JavaScript #}
     <script src="{% static "jquery/jquery.min.js" %}"></script>
@@ -41,6 +43,8 @@ SPDX-License-Identifier: GPL-3.0-or-later
     {# Translation in javascript files #}
     <script src="{% static "js/jsi18n/"|add:LANGUAGE_CODE|add:".js" %}"></script>
 
+    <script src="https://cdn.jsdelivr.net/npm/intl-tel-input@25.5.2/build/js/intlTelInput.min.js"></script>
+    
     {# If extra ressources are needed for a form, load here #}
     {% if form.media %}
         {{ form.media }}
diff --git a/note_kfet/templates/registration/signup.html b/note_kfet/templates/registration/signup.html
index 7bd503eb..8aa15f8c 100644
--- a/note_kfet/templates/registration/signup.html
+++ b/note_kfet/templates/registration/signup.html
@@ -31,3 +31,45 @@ SPDX-License-Identifier: GPL-3.0-or-later
     </div>
 </div>
 {% endblock %}
+
+{% block extrajavascript %}
+<!-- intl-tel-input CSS/JS -->
+<script>
+(() => {
+    const input = document.querySelector("input[name='phone_number']");
+    const form = document.querySelector("#profile_form");
+
+    if (!input || !form) {
+        console.error("Input phone_number ou form introuvable.");
+    }
+
+    const iti = window.intlTelInput(input, {
+        initialCountry: "auto",
+        nationalMode: false,
+        autoPlaceholder: "off",
+        geoIpLookup: callback => {
+            fetch("https://ipapi.co/json")
+                .then(res => res.json())
+                .then(data => callback(data.country_code))
+                .catch(() => callback("fr"));
+        },
+        loadUtils: () => import("https://cdn.jsdelivr.net/npm/intl-tel-input@25.5.2/build/js/utils.js"),
+    });
+
+    form.addEventListener("submit", function(e){
+        if (!input.value.trim()) {
+            return;
+        }
+
+        const number = iti.getNumber(intlTelInput.utils.numberFormat.E164);
+        if (number) {
+            input.value = number;
+            form.submit();
+        } else {
+            e.preventDefault();
+            input.focus();
+        }
+    });
+})();
+</script>
+{% endblock %}
\ No newline at end of file