diff --git a/app/controllers/registrant/sessions_controller.rb b/app/controllers/registrant/sessions_controller.rb
index 3d2ab7801..b495a1a6a 100644
--- a/app/controllers/registrant/sessions_controller.rb
+++ b/app/controllers/registrant/sessions_controller.rb
@@ -56,7 +56,10 @@ class Registrant::SessionsController < Devise::SessionsController
       session[:user_country] = response.user_country
       session[:user_id_code] = response.user_id_code
       session[:mid_session_code] = client.session_code
-      render json: { message: t(:check_your_phone_for_confirmation_code) }, status: :ok
+
+      render json: {
+        message: t(:confirmation_sms_was_sent_to_your_phone_verification_code_is, { code: response.challenge_id })
+      }, status: :ok
     else
       render json: { message: t(:no_such_user) }, status: :unauthorized
     end
diff --git a/app/controllers/registrar/sessions_controller.rb b/app/controllers/registrar/sessions_controller.rb
index 1fcd1e914..3fea41f75 100644
--- a/app/controllers/registrar/sessions_controller.rb
+++ b/app/controllers/registrar/sessions_controller.rb
@@ -111,7 +111,10 @@ class Registrar::SessionsController < Devise::SessionsController
     if @user.persisted?
       session[:user_id_code] = response.user_id_code
       session[:mid_session_code] = client.session_code
-      render json: { message: t(:check_your_phone_for_confirmation_code) }, status: :ok
+
+      render json: {
+        message: t(:confirmation_sms_was_sent_to_your_phone_verification_code_is, { code: response.challenge_id })
+      }, status: :ok
     else
       render json: { message: t(:no_such_user) }, status: :unauthorized
     end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index b95085cc7..2275b13b1 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -513,7 +513,7 @@ en:
   log_in: 'Log in'
   phone_no: 'Phone number'
   log_in_with_mid: 'Log in with mobile-id'
-  check_your_phone_for_confirmation_code: 'Check your phone for confirmation code'
+  confirmation_sms_was_sent_to_your_phone_verification_code_is: 'Confirmation sms was sent to your phone. Verification code is %{code}.'
   user_signature_is_invalid: 'User signature is invalid'
   session_timeout: 'Session timeout'
   user_cancelled: 'User cancelled'