diff --git a/app/javascript/submission_form/phone_step.vue b/app/javascript/submission_form/phone_step.vue
index d80ac512..b854c384 100644
--- a/app/javascript/submission_form/phone_step.vue
+++ b/app/javascript/submission_form/phone_step.vue
@@ -100,7 +100,7 @@
         <input
           :id="field.uuid"
           ref="phone"
-          :value="phoneValue"
+          :value="defaultValue && detectedPhoneValueDialCode ? phoneValue.split('+' + detectedPhoneValueDialCode).slice(-1).join('') : phoneValue"
           :readonly="!!defaultValue"
           class="base-input !text-2xl !rounded-l-none !border-l-0 !outline-none w-full"
           autocomplete="tel"
diff --git a/app/views/submissions/_detailed_form.html.erb b/app/views/submissions/_detailed_form.html.erb
index f6f832ff..3131a644 100644
--- a/app/views/submissions/_detailed_form.html.erb
+++ b/app/views/submissions/_detailed_form.html.erb
@@ -36,7 +36,7 @@
                     <custom-validation data-invalid-message="<%= t('use_international_format_1xxx_') %>">
                       <submitters-autocomplete data-field="phone">
                         <linked-input data-target-id="<%= "detailed_phone_#{item['linked_to_uuid']}" if item['linked_to_uuid'].present? %>">
-                          <%= tag.input type: 'tel', pattern: '^\+[0-9\s\-]+$', autocomplete: 'off', class: 'base-input !h-10 mt-1.5 w-full', placeholder: local_assigns[:require_phone_2fa] == true ? t(:phone) : "#{t('phone')} (#{t('optional')})", id: "detailed_phone_#{item['uuid']}", required: local_assigns[:require_phone_2fa] == true %>
+                          <%= tag.input type: 'tel', pattern: '^\+[0-9\s\-]+$', name: 'submission[1][submitters][][phone]', autocomplete: 'off', class: 'base-input !h-10 mt-1.5 w-full', placeholder: local_assigns[:require_phone_2fa] == true ? t(:phone) : "#{t('phone')} (#{t('optional')})", id: "detailed_phone_#{item['uuid']}", required: local_assigns[:require_phone_2fa] == true %>
                         </linked-input>
                       </submitters-autocomplete>
                     </custom-validation>