diff --git a/addons/default/visiosoft/base-theme/resources/css/register.css b/addons/default/visiosoft/base-theme/resources/css/register.css
index cbfd641bd..954390e8e 100644
--- a/addons/default/visiosoft/base-theme/resources/css/register.css
+++ b/addons/default/visiosoft/base-theme/resources/css/register.css
@@ -11,4 +11,19 @@
 .personal-advantages img {
     max-height: 60px;
     max-width: 60px;
+}
+
+.approved-phone {
+    background-color: #ebf2e5 !important;
+    border-color: #4a7c20 !important;
+}
+
+.rejected-phone {
+    background-color: #f8e6e9 !important;
+    border-color: #ba7b84 !important;
+}
+
+.phone-validation-error {
+    color: #c75050;
+    font-size: 14px;
 }
\ No newline at end of file
diff --git a/addons/default/visiosoft/base-theme/resources/js/register.js b/addons/default/visiosoft/base-theme/resources/js/register.js
index b5b0d5572..5930e77f5 100644
--- a/addons/default/visiosoft/base-theme/resources/js/register.js
+++ b/addons/default/visiosoft/base-theme/resources/js/register.js
@@ -1 +1,48 @@
 phoneMask("input[name='phone'],input[name='land_phone']");
+
+// Phone register validation
+//setup before functions
+let typingTimer;
+let doneTypingInterval = 650;
+let phoneInput = $(".validate-phone input[name='phone']");
+
+//on keyup, start the countdown
+phoneInput.on('keyup', function () {
+    clearTimeout(typingTimer);
+    typingTimer = setTimeout(function () {
+        doneTyping(phoneInput.val())
+    }, doneTypingInterval)
+});
+
+//on keydown, clear the countdown
+phoneInput.on('keydown', function () {
+    clearTimeout(typingTimer);
+});
+
+function doneTyping(phoneNum) {
+    if (!phoneNum.includes('_') && phoneNum !== "") {
+        let countryCode = $(".iti__selected-flag").attr('title').split("+");
+        countryCode = '+' + countryCode[countryCode.length - 1];
+
+        $.ajax({
+            type: 'GET',
+            data: {'phoneNumber': countryCode + phoneNum.substr(1)},
+            url: 'ajax/phone-validation',
+            success: function (response) {
+                if (response.userExists) {
+                    phoneInput.addClass('rejected-phone');
+                    phoneInput.removeClass('approved-phone');
+                    $('.phone-validation-error').removeClass('d-none')
+                } else {
+                    phoneInput.addClass('approved-phone');
+                    phoneInput.removeClass('rejected-phone');
+                    $('.phone-validation-error').addClass('d-none')
+                }
+            },
+        });
+    } else {
+        phoneInput.removeClass('approved-phone');
+        phoneInput.removeClass('rejected-phone');
+        $('.phone-validation-error').addClass('d-none')
+    }
+}
\ No newline at end of file
diff --git a/addons/default/visiosoft/base-theme/resources/lang/en/field.php b/addons/default/visiosoft/base-theme/resources/lang/en/field.php
index 4ff406659..9677f96b6 100644
--- a/addons/default/visiosoft/base-theme/resources/lang/en/field.php
+++ b/addons/default/visiosoft/base-theme/resources/lang/en/field.php
@@ -31,6 +31,9 @@ return [
     'personal_registration_list_3' => 'Send messages to the ad owners on the site.',
     'register_information_note' => 'The information on this page is taken for ' . env('APPLICATION_DOMAIN') . ' membership. You can find detailed information about the protection of personal data here.',
 
+    // Register page
+    'phone_validation_error' => 'This email address is in use by another member.',
+
     // Forgot Password
     'create_new_password' => 'Create New Password',
 ];
\ No newline at end of file
diff --git a/addons/default/visiosoft/base-theme/resources/views/addons/anomaly/users-module/partials/register-form.twig b/addons/default/visiosoft/base-theme/resources/views/addons/anomaly/users-module/partials/register-form.twig
index 697f139be..c63a55cb9 100644
--- a/addons/default/visiosoft/base-theme/resources/views/addons/anomaly/users-module/partials/register-form.twig
+++ b/addons/default/visiosoft/base-theme/resources/views/addons/anomaly/users-module/partials/register-form.twig
@@ -47,6 +47,25 @@
         'class' :'hidden',
     }).input|raw }}
 {% endif %}
+<div class="col-12">
+    <div class="form-group email-field phone-field_type register-phone mb-2">
+        <label class="control-label">
+            {{ trans('visiosoft.theme.base::field.phone_number') }}
+            <span class="required">*</span>
+        </label>
+
+        <div class="input-wrapper validate-phone">
+            {{ form.fields.phone.setValue(form.fields.phone.value).input|raw }}
+        </div>
+    </div>
+</div>
+<div class="col-12 mb-3">
+    <p class="phone-validation-error mb-0 d-none">
+        <i class="fa fa-times-circle"></i>
+        {{ trans('visiosoft.theme.base::field.phone_validation_error') }}
+    </p>
+</div>
+
 <div class="col-12">
     <div class="form-group password-field password-field_type">
         <label class="control-label">
@@ -58,16 +77,4 @@
             {{ form.fields.password.setPlaceholder(trans('visiosoft.theme.base::field.password')).input|raw }}
         </div>
     </div>
-</div>
-<div class="col-12">
-    <div class="form-group email-field phone-field_type register-phone">
-        <label class="control-label">
-            {{ trans('visiosoft.theme.base::field.phone_number') }}
-            <span class="required">*</span>
-        </label>
-
-        <div class="input-wrapper">
-            {{ form.fields.phone.setValue(form.fields.phone.value).input|raw }}
-        </div>
-    </div>
 </div>
\ No newline at end of file
diff --git a/addons/default/visiosoft/profile-module/src/Http/Controller/UserAuthenticator.php b/addons/default/visiosoft/profile-module/src/Http/Controller/UserAuthenticator.php
index 3771b1730..735d53103 100644
--- a/addons/default/visiosoft/profile-module/src/Http/Controller/UserAuthenticator.php
+++ b/addons/default/visiosoft/profile-module/src/Http/Controller/UserAuthenticator.php
@@ -224,4 +224,15 @@ class UserAuthenticator
     {
         return response()->json(['status' => $type, 'message' => $message]);
     }
+
+    public function phoneValidation(Request $request, UserRepositoryInterface $userRepository)
+    {
+        $phoneNum = str_replace(' ', '', $request->phoneNumber);
+        $userExists = $userRepository->findBy('gsm_phone', $phoneNum);
+        if ($userExists) {
+            return response()->json(['userExists' => true]);
+        } else {
+            return response()->json(['userExists' => false]);
+        }
+    }
 }
diff --git a/addons/default/visiosoft/profile-module/src/ProfileModuleServiceProvider.php b/addons/default/visiosoft/profile-module/src/ProfileModuleServiceProvider.php
index c36245a0c..8d19bab62 100644
--- a/addons/default/visiosoft/profile-module/src/ProfileModuleServiceProvider.php
+++ b/addons/default/visiosoft/profile-module/src/ProfileModuleServiceProvider.php
@@ -111,6 +111,7 @@ class ProfileModuleServiceProvider extends AddonServiceProvider
                 \Barryvdh\Cors\HandleCors::class,
             ]
         ],
+        'ajax/phone-validation' => 'Visiosoft\ProfileModule\Http\Controller\UserAuthenticator@phoneValidation',
 
         /* Login */
         'login-in' => 'Visiosoft\ProfileModule\Http\Controller\UserAuthenticator@attempt',