diff --git a/app/controllers/verification/sms_controller.rb b/app/controllers/verification/sms_controller.rb
new file mode 100644
index 000000000..e0080753e
--- /dev/null
+++ b/app/controllers/verification/sms_controller.rb
@@ -0,0 +1,62 @@
+class Verification::SmsController < ApplicationController
+  before_action :authenticate_user!
+  before_action :verify_resident!
+  before_action :verify_attemps_left!, only: [:new, :create]
+
+  skip_authorization_check
+
+  def new
+    @sms = Sms.new(phone: params[:phone])
+  end
+
+  def create
+    @sms = Sms.new(sms_params.merge(user: current_user))
+    if @sms.save
+      redirect_to edit_sms_path, notice: t('verification.sms.create.flash.success')
+    else
+      render :new
+    end
+  end
+
+  def edit
+    @sms = Sms.new
+  end
+
+  def update
+    @sms = Sms.new(sms_params.merge(user: current_user))
+    if @sms.verify?
+      current_user.update(confirmed_phone: current_user.unconfirmed_phone)
+
+      if VerifiedUser.phone?(current_user)
+        current_user.update(verified_at: Time.now)
+      end
+
+      redirect_to_next_path
+    else
+      @error = t('verification.sms.update.error')
+      render :edit
+    end
+  end
+
+  private
+
+    def sms_params
+      params.require(:sms).permit(:phone, :confirmation_code)
+    end
+
+    def redirect_to_next_path
+      current_user.reload
+      if current_user.level_three_verified?
+        redirect_to account_path, notice: t('verification.sms.update.flash.level_three.success')
+      else
+        redirect_to new_letter_path, notice: t('verification.sms.update.flash.level_two.success')
+      end
+    end
+
+    def verify_attemps_left!
+      if current_user.sms_confirmation_tries >= 3
+        redirect_to account_path, notice: t('verification.sms.alert.verify_attemps_left')
+      end
+    end
+
+end
\ No newline at end of file
diff --git a/app/models/sms.rb b/app/models/sms.rb
new file mode 100644
index 000000000..61b06a091
--- /dev/null
+++ b/app/models/sms.rb
@@ -0,0 +1,47 @@
+class Sms
+  include ActiveModel::Model
+
+  attr_accessor :user, :phone, :confirmation_code
+
+  validates_presence_of :phone
+  validates :phone, length: { is: 9 }
+  validate :spanish_phone
+  validate :uniqness_phone
+
+  def spanish_phone
+    errors.add(:phone, :invalid) unless phone.start_with?('6', '7')
+  end
+
+  def uniqness_phone
+    errors.add(:phone, :taken) if User.where(confirmed_phone: phone).any?
+  end
+
+  def save
+    return false unless self.valid?
+    update_user_phone_information
+    send_sms
+    increase_sms_tries
+  end
+
+  def update_user_phone_information
+    user.update(unconfirmed_phone: phone, sms_confirmation_code: four_digit_code)
+  end
+
+  def send_sms
+    SMSApi.new.sms_deliver(user.unconfirmed_phone, user.sms_confirmation_code)
+  end
+
+  def increase_sms_tries
+    user.update(sms_confirmation_tries: user.sms_confirmation_tries += 1)
+  end
+
+  def verify?
+    user.sms_confirmation_code == confirmation_code
+  end
+
+  private
+
+    def four_digit_code
+      rand.to_s[2..5]
+    end
+end
\ No newline at end of file
diff --git a/app/views/verification/sms/_form.html.erb b/app/views/verification/sms/_form.html.erb
new file mode 100644
index 000000000..efa0f74b8
--- /dev/null
+++ b/app/views/verification/sms/_form.html.erb
@@ -0,0 +1,5 @@
+<%= form_for sms, url: sms_path do |f| %>
+  <%= render 'shared/errors', resource: sms %>
+  <%= f.hidden_field :phone %>
+  <%= f.submit t('verification.sms.form.submit_button') %>
+<% end %>
\ No newline at end of file
diff --git a/app/views/verification/sms/edit.html.erb b/app/views/verification/sms/edit.html.erb
new file mode 100644
index 000000000..89fbef5ff
--- /dev/null
+++ b/app/views/verification/sms/edit.html.erb
@@ -0,0 +1,16 @@
+<div class="row account">
+  <div class="small-12 column">
+
+    <h1 class="inline-block"><%= t('verification.sms.edit.title') %></h1>
+
+    <%= form_for @sms, url: sms_path, method: :put do |f| %>
+      <p><%= @error %></p>
+      <%= f.text_field :confirmation_code %>
+
+      <%= f.submit t('verification.sms.edit.submit_button') %>
+    <% end %>
+
+    <%= t('verification.sms.edit.resend_sms_text') %>
+    <%= link_to t('verification.sms.edit.resend_sms_link'), verified_user_path %>
+  </div>
+</div>
\ No newline at end of file
diff --git a/app/views/verification/sms/new.html.erb b/app/views/verification/sms/new.html.erb
new file mode 100644
index 000000000..eec63f6c6
--- /dev/null
+++ b/app/views/verification/sms/new.html.erb
@@ -0,0 +1,14 @@
+<div class="row account">
+  <div class="small-12 column">
+
+    <h1 class="inline-block"><%= t('verification.sms.new.title') %></h1>
+
+    <%= form_for @sms, url: sms_path do |f| %>
+      <%= render 'shared/errors', resource: @sms %>
+
+      <%= f.text_field :phone %>
+
+      <%= f.submit t('verification.sms.new.submit_button') %>
+    <% end %>
+  </div>
+</div>
\ No newline at end of file