diff --git a/flexiapi/app/Account.php b/flexiapi/app/Account.php
index b480df8..3950422 100644
--- a/flexiapi/app/Account.php
+++ b/flexiapi/app/Account.php
@@ -39,9 +39,10 @@ class Account extends Authenticatable
     use HasFactory;
 
     protected $connection = 'external';
-    protected $with = ['passwords', 'admin', 'emailChanged'];
+    protected $with = ['passwords', 'admin', 'emailChanged', 'alias'];
+    protected $hidden = ['alias', 'expire_time', 'confirmation_key'];
     protected $dateTimes = ['creation_time'];
-    protected $appends = ['realm'];
+    protected $appends = ['realm', 'phone'];
     protected $casts = [
         'activated' => 'boolean',
     ];
@@ -72,6 +73,11 @@ class Account extends Authenticatable
         return $query->where('id', '<', 0);
     }
 
+    public function phoneChangeCode()
+    {
+        return $this->hasOne('App\PhoneChangeCode');
+    }
+
     public function passwords()
     {
         return $this->hasMany('App\Password');
@@ -112,6 +118,20 @@ class Account extends Authenticatable
         return config('app.realm');
     }
 
+    public function getResolvedRealmAttribute()
+    {
+        return config('app.realm') ?? $this->domain;
+    }
+
+    public function getPhoneAttribute()
+    {
+        if ($this->alias) {
+            return $this->alias->alias;
+        }
+
+        return null;
+    }
+
     public function requestEmailUpdate(string $newEmail)
     {
         // Remove all the old requests
@@ -150,7 +170,7 @@ class Account extends Authenticatable
 
         $password = new Password;
         $password->account_id = $this->id;
-        $password->password = Utils::bchash($this->username, $this->domain, $newPassword, $algorithm);
+        $password->password = Utils::bchash($this->username, $this->resolvedRealm, $newPassword, $algorithm);
         $password->algorithm = $algorithm;
         $password->save();
     }
diff --git a/flexiapi/app/Http/Controllers/Account/PasswordController.php b/flexiapi/app/Http/Controllers/Account/PasswordController.php
index b3d1c2c..f032cf4 100644
--- a/flexiapi/app/Http/Controllers/Account/PasswordController.php
+++ b/flexiapi/app/Http/Controllers/Account/PasswordController.php
@@ -23,8 +23,6 @@ use App\Http\Controllers\Controller;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Mail;
 
-use App\Account;
-use App\Password;
 use App\Helpers\Utils;
 use App\Mail\ConfirmedRegistration;
 
@@ -56,7 +54,7 @@ class PasswordController extends Controller
                 // If one of the password stored equals the one entered
                 if (hash_equals(
                     $password->password,
-                    Utils::bchash($account->username, $account->domain, $request->get('old_password'), $password->algorithm)
+                    Utils::bchash($account->username, $account->resolvedRealm, $request->get('old_password'), $password->algorithm)
                 )) {
                     $account->updatePassword($request->get('password'), $algorithm);
                     $request->session()->flash('success', 'Password successfully changed');
diff --git a/flexiapi/app/Http/Controllers/Account/RegisterController.php b/flexiapi/app/Http/Controllers/Account/RegisterController.php
index 4e5244e..9c38558 100644
--- a/flexiapi/app/Http/Controllers/Account/RegisterController.php
+++ b/flexiapi/app/Http/Controllers/Account/RegisterController.php
@@ -28,7 +28,6 @@ use Carbon\Carbon;
 
 use App\Account;
 use App\Alias;
-use App\Rules\SIP;
 use App\Rules\WithoutSpaces;
 use App\Helpers\Utils;
 use App\Libraries\OvhSMS;
diff --git a/flexiapi/app/Http/Controllers/Api/AccountPhoneController.php b/flexiapi/app/Http/Controllers/Api/AccountPhoneController.php
new file mode 100644
index 0000000..d046fc5
--- /dev/null
+++ b/flexiapi/app/Http/Controllers/Api/AccountPhoneController.php
@@ -0,0 +1,84 @@
+<?php
+/*
+    Flexisip Account Manager is a set of tools to manage SIP accounts.
+    Copyright (C) 2020 Belledonne Communications SARL, All rights reserved.
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as
+    published by the Free Software Foundation, either version 3 of the
+    License, or (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace App\Http\Controllers\Api;
+
+use Illuminate\Http\Request;
+use App\Http\Controllers\Controller;
+
+use App\Rules\WithoutSpaces;
+use App\Helpers\Utils;
+use App\Libraries\OvhSMS;
+
+use App\PhoneChangeCode;
+use App\Alias;
+
+class AccountPhoneController extends Controller
+{
+    public function requestUpdate(Request $request)
+    {
+        $request->validate([
+            'phone' => [
+                'required', 'unique:external.aliases,alias',
+                'unique:external.accounts,username',
+                new WithoutSpaces, 'starts_with:+', 'phone:AUTO'
+            ]
+        ]);
+
+        $account = $request->user();
+
+        $phoneChangeCode = $account->phoneChangeCode ?? new PhoneChangeCode;
+        $phoneChangeCode->account_id = $account->id;
+        $phoneChangeCode->phone = $request->get('phone');
+        $phoneChangeCode->code = Utils::generatePin();
+        $phoneChangeCode->save();
+
+        $ovhSMS = new OvhSMS;
+        $ovhSMS->send($request->get('phone'), 'Your ' . config('app.name') . ' validation code is ' . $phoneChangeCode->code);
+    }
+
+    public function update(Request $request)
+    {
+        $request->validate([
+            'code' => 'required|digits:4'
+        ]);
+
+        $account = $request->user();
+
+        $phoneChangeCode = $account->phoneChangeCode()->firstOrFail();
+        if ($phoneChangeCode->code == $request->get('code')) {
+            $account->alias()->delete();
+
+            $alias = new Alias;
+            $alias->alias = $phoneChangeCode->phone;
+            $alias->domain = config('app.sip_domain');
+            $alias->account_id = $account->id;
+            $alias->save();
+
+            $phoneChangeCode->delete();
+
+            $account->refresh();
+
+            return $account;
+        }
+
+        $phoneChangeCode->delete();
+        abort(403);
+    }
+}
diff --git a/flexiapi/app/Http/Controllers/Api/Admin/AccountController.php b/flexiapi/app/Http/Controllers/Api/Admin/AccountController.php
index b7f2b11..831b0b9 100644
--- a/flexiapi/app/Http/Controllers/Api/Admin/AccountController.php
+++ b/flexiapi/app/Http/Controllers/Api/Admin/AccountController.php
@@ -107,7 +107,7 @@ class AccountController extends Controller
 
         $password = new Password;
         $password->account_id = $account->id;
-        $password->password = Utils::bchash($account->username, $account->domain, $request->get('password'), $request->get('algorithm'));
+        $password->password = Utils::bchash($account->username, $account->resolvedRealm, $request->get('password'), $request->get('algorithm'));
         $password->algorithm = $request->get('algorithm');
         $password->save();
 
diff --git a/flexiapi/app/Http/Controllers/Api/PasswordController.php b/flexiapi/app/Http/Controllers/Api/PasswordController.php
index d9132e8..637d3b1 100644
--- a/flexiapi/app/Http/Controllers/Api/PasswordController.php
+++ b/flexiapi/app/Http/Controllers/Api/PasswordController.php
@@ -30,7 +30,7 @@ class PasswordController extends Controller
             foreach ($account->passwords as $password) {
                 if (hash_equals(
                     $password->password,
-                    Utils::bchash($account->username, $account->domain, $request->get('old_password'), $password->algorithm)
+                    Utils::bchash($account->username, $account->resolvedRealm, $request->get('old_password'), $password->algorithm)
                 )) {
                     $account->updatePassword($request->get('password'), $algorithm);
                     return response()->json();
diff --git a/flexiapi/app/Http/Middleware/AuthenticateDigestOrKey.php b/flexiapi/app/Http/Middleware/AuthenticateDigestOrKey.php
index c24bd81..e6e7ffc 100644
--- a/flexiapi/app/Http/Middleware/AuthenticateDigestOrKey.php
+++ b/flexiapi/app/Http/Middleware/AuthenticateDigestOrKey.php
@@ -22,7 +22,6 @@ namespace App\Http\Middleware;
 use App\Account;
 use App\Helpers\Utils;
 
-use Fabiang\Sasl\Sasl;
 use Illuminate\Validation\Rule;
 use Illuminate\Support\Facades\Auth;
 use Illuminate\Http\Response;
@@ -45,7 +44,7 @@ class AuthenticateDigestOrKey
      */
     public function handle($request, Closure $next)
     {
-        $validator = Validator::make(['from' => $request->header('From')], [
+        Validator::make(['from' => $request->header('From')], [
             'from'    => 'required',
         ])->validate();
 
@@ -95,7 +94,7 @@ class AuthenticateDigestOrKey
             $storedNonce->save();
 
             // Validation
-            $validator = Validator::make($auth, [
+            Validator::make($auth, [
                 'opaque'    => 'required|in:'.$this->getOpaque(),
                 //'uri'       => 'in:/'.$request->path(),
                 'qop'       => 'required|in:auth',
diff --git a/flexiapi/app/Libraries/OvhSMS.php b/flexiapi/app/Libraries/OvhSMS.php
index 08a6e9b..754ebc1 100644
--- a/flexiapi/app/Libraries/OvhSMS.php
+++ b/flexiapi/app/Libraries/OvhSMS.php
@@ -19,7 +19,6 @@
 
 namespace App\Libraries;
 
-use App\Device;
 use Ovh\Api;
 
 class OvhSMS
@@ -55,9 +54,9 @@ class OvhSMS
             'validityPeriod'    => 2880
         ];
 
-        $resultPostJob = $this->_api->post('/sms/'. $this->_smsService . '/jobs', $content);
+        $this->_api->post('/sms/'. $this->_smsService . '/jobs', $content);
         // One credit removed
 
-        $smsJobs = $this->_api->get('/sms/'. $this->_smsService . '/jobs');
+        $this->_api->get('/sms/'. $this->_smsService . '/jobs');
     }
 }
\ No newline at end of file
diff --git a/flexiapi/app/PhoneChangeCode.php b/flexiapi/app/PhoneChangeCode.php
new file mode 100644
index 0000000..57df589
--- /dev/null
+++ b/flexiapi/app/PhoneChangeCode.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace App;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class PhoneChangeCode extends Model
+{
+    use HasFactory;
+
+    protected $connection = 'local';
+
+    public function account()
+    {
+        return $this->belongsTo('App\Account');
+    }
+}
diff --git a/flexiapi/composer.phar b/flexiapi/composer.phar
new file mode 100755
index 0000000..9efd41a
Binary files /dev/null and b/flexiapi/composer.phar differ
diff --git a/flexiapi/database/factories/AccountFactory.php b/flexiapi/database/factories/AccountFactory.php
index 86b6459..f63f0ba 100644
--- a/flexiapi/database/factories/AccountFactory.php
+++ b/flexiapi/database/factories/AccountFactory.php
@@ -21,7 +21,6 @@ namespace Database\Factories;
 
 use App\Account;
 use Illuminate\Database\Eloquent\Factories\Factory;
-use Illuminate\Support\Str;
 
 class AccountFactory extends Factory
 {
diff --git a/flexiapi/database/factories/PasswordFactory.php b/flexiapi/database/factories/PasswordFactory.php
index 911ead0..842c7a2 100644
--- a/flexiapi/database/factories/PasswordFactory.php
+++ b/flexiapi/database/factories/PasswordFactory.php
@@ -21,10 +21,7 @@ namespace Database\Factories;
 
 use App\Account;
 use App\Password;
-use App\User;
 use Illuminate\Database\Eloquent\Factories\Factory;
-use Illuminate\Support\Str;
-use Illuminate\Support\Facades\DB;
 
 class PasswordFactory extends Factory
 {
diff --git a/flexiapi/database/factories/PhoneChangeCodeFactory.php b/flexiapi/database/factories/PhoneChangeCodeFactory.php
new file mode 100644
index 0000000..bde9eff
--- /dev/null
+++ b/flexiapi/database/factories/PhoneChangeCodeFactory.php
@@ -0,0 +1,42 @@
+<?php
+/*
+    Flexisip Account Manager is a set of tools to manage SIP accounts.
+    Copyright (C) 2020 Belledonne Communications SARL, All rights reserved.
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as
+    published by the Free Software Foundation, either version 3 of the
+    License, or (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace Database\Factories;
+
+use App\Helpers\Utils;
+use App\Password;
+use App\PhoneChangeCode;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+class PhoneChangeCodeFactory extends Factory
+{
+    protected $model = PhoneChangeCode::class;
+
+    public function definition()
+    {
+        $password = Password::factory()->create();
+        $password->account->generateApiKey();
+
+        return [
+            'account_id' => $password->account->id,
+            'code'   => Utils::generatePin(),
+            'phone'  => '+3312341234',
+        ];
+    }
+}
\ No newline at end of file
diff --git a/flexiapi/database/migrations/2021_02_10_160119_add_phone_change_codes_table.php b/flexiapi/database/migrations/2021_02_10_160119_add_phone_change_codes_table.php
new file mode 100644
index 0000000..0be2a57
--- /dev/null
+++ b/flexiapi/database/migrations/2021_02_10_160119_add_phone_change_codes_table.php
@@ -0,0 +1,24 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddPhoneChangeCodesTable extends Migration
+{
+    public function up()
+    {
+        Schema::connection('local')->create('phone_change_codes', function (Blueprint $table) {
+            $table->bigIncrements('id');
+            $table->integer('account_id')->unsigned();
+            $table->string('code');
+            $table->string('phone');
+            $table->timestamps();
+        });
+    }
+
+    public function down()
+    {
+        Schema::connection('local')->dropIfExists('phone_change_codes');
+    }
+}
diff --git a/flexiapi/resources/views/documentation.blade.php b/flexiapi/resources/views/documentation.blade.php
index e26f527..880bc67 100644
--- a/flexiapi/resources/views/documentation.blade.php
+++ b/flexiapi/resources/views/documentation.blade.php
@@ -100,6 +100,24 @@ For the moment only DIGEST-MD5 and DIGEST-SHA-256 are supported through the auth
     <li><code>password</code> required, the new password</li>
 </ul>
 
+<h4>Phone number</h4>
+
+<h4><code>POST /accounts/me/phone/request</code></h4>
+<p>Request a specific code by SMS</p>
+<p>JSON parameters:</p>
+<ul>
+    <li><code>phone</code> the phone number to send the SMS</li>
+</ul>
+
+<h4><code>POST /accounts/me/phone</code></h4>
+<p>Confirm the code received and change the phone number</p>
+<p>JSON parameters:</p>
+<ul>
+    <li><code>code</code> the received SMS code</li>
+</ul>
+
+<p>Return the updated account</p>
+
 <h4>Devices</h4>
 
 <h4><code>GET /accounts/me/devices</code></h4>
diff --git a/flexiapi/routes/api.php b/flexiapi/routes/api.php
index f0fe3fb..3194a37 100644
--- a/flexiapi/routes/api.php
+++ b/flexiapi/routes/api.php
@@ -34,6 +34,9 @@ Route::group(['middleware' => ['auth.digest_or_key']], function () {
     Route::get('accounts/me', 'Api\AccountController@show');
     Route::delete('accounts/me', 'Api\AccountController@delete');
 
+    Route::post('accounts/me/phone/request', 'Api\AccountPhoneController@requestUpdate');
+    Route::post('accounts/me/phone', 'Api\AccountPhoneController@update');
+
     Route::get('accounts/me/devices', 'Api\DeviceController@index');
     Route::delete('accounts/me/devices/{uuid}', 'Api\DeviceController@destroy');
 
diff --git a/flexiapi/tests/Feature/AccountApiTest.php b/flexiapi/tests/Feature/AccountApiTest.php
index d89c230..19c10e1 100644
--- a/flexiapi/tests/Feature/AccountApiTest.php
+++ b/flexiapi/tests/Feature/AccountApiTest.php
@@ -22,12 +22,9 @@ namespace Tests\Feature;
 use App\Password;
 use App\Account;
 use App\Admin;
-use App\User;
 
 use Illuminate\Foundation\Testing\RefreshDatabase;
-use Illuminate\Foundation\Testing\WithFaker;
 use Tests\TestCase;
-use Illuminate\Support\Facades\DB;
 
 class AccountApiTest extends TestCase
 {
@@ -38,7 +35,7 @@ class AccountApiTest extends TestCase
 
     public function testMandatoryFrom()
     {
-        $password = Password::factory()->create();
+        Password::factory()->create();
         $response = $this->json($this->method, $this->route);
         $response->assertStatus(422);
     }
@@ -109,8 +106,6 @@ class AccountApiTest extends TestCase
                 'domain' => $domain,
                 'activated' => false
             ]);
-
-        $this->assertFalse(empty($response1['confirmation_key']));
     }
 
     public function testUsernameNoDomain()
@@ -179,8 +174,6 @@ class AccountApiTest extends TestCase
                 'domain' => config('app.sip_domain'),
                 'activated' => true,
             ]);
-
-        $this->assertTrue(empty($response1['confirmation_key']));
     }
 
     public function testNotActivated()
@@ -208,8 +201,6 @@ class AccountApiTest extends TestCase
                 'domain' => config('app.sip_domain'),
                 'activated' => false,
             ]);
-
-        $this->assertFalse(empty($response1['confirmation_key']));
     }
 
     public function testSimpleAccount()
@@ -424,7 +415,7 @@ class AccountApiTest extends TestCase
             ]);
 
         // Set the new password with incorrect old password
-        $response = $this->keyAuthenticated($account)
+        $this->keyAuthenticated($account)
             ->json($this->method, $this->route.'/me/password', [
                 'algorithm' => $newAlgorithm,
                 'old_password' => 'blabla',
@@ -513,7 +504,8 @@ class AccountApiTest extends TestCase
             ->get($this->route.'/'.$admin->id)
             ->assertStatus(200)
             ->assertJson([
-                'id' => 1
+                'id' => 1,
+                'phone' => null
             ]);
     }
 
diff --git a/flexiapi/tests/Feature/AccountPhoneChangeTest.php b/flexiapi/tests/Feature/AccountPhoneChangeTest.php
new file mode 100644
index 0000000..f190f94
--- /dev/null
+++ b/flexiapi/tests/Feature/AccountPhoneChangeTest.php
@@ -0,0 +1,95 @@
+<?php
+/*
+    Flexisip Account Manager is a set of tools to manage SIP accounts.
+    Copyright (C) 2020 Belledonne Communications SARL, All rights reserved.
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as
+    published by the Free Software Foundation, either version 3 of the
+    License, or (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace Tests\Feature;
+
+use App\Password;
+use App\Account;
+use App\Admin;
+use App\PhoneChangeCode;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AccountPhoneChangeTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected $route = '/api/accounts/me/phone';
+    protected $method = 'POST';
+
+    public function testRequest()
+    {
+        $password = Password::factory()->create();
+        $password->account->generateApiKey();
+
+        $this->keyAuthenticated($password->account)
+            ->json($this->method, $this->route.'/request', [
+                'phone' => 'blabla'
+            ])
+            ->assertStatus(422);
+
+        // Send a SMS
+        /*$this->keyAuthenticated($password->account)
+            ->json($this->method, $this->route.'/request', [
+                'phone' => '+33667545663'
+            ])
+            ->assertStatus(200);*/
+    }
+
+    public function testConfirmLongCode()
+    {
+        $phoneChange = PhoneChangeCode::factory()->create();
+
+        $this->keyAuthenticated($phoneChange->account)
+            ->json($this->method, $this->route, [
+                'code' => 'wrong'
+            ])
+            ->assertStatus(422);
+    }
+
+    public function testConfirmGoodCode()
+    {
+        $phoneChange = PhoneChangeCode::factory()->create();
+        $phone = $phoneChange->phone;
+
+        $this->keyAuthenticated($phoneChange->account)
+            ->get('/api/accounts/me')
+            ->assertStatus(200)
+            ->assertJson([
+                'phone' => null
+            ]);
+
+        $this->keyAuthenticated($phoneChange->account)
+            ->json($this->method, $this->route, [
+                'code' => $phoneChange->code
+            ])
+            ->assertStatus(200)
+            ->assertJson([
+                'phone' => $phone,
+            ]);
+
+        $this->keyAuthenticated($phoneChange->account)
+            ->get('/api/accounts/me')
+            ->assertStatus(200)
+            ->assertJson([
+                'phone' => $phone
+            ]);
+    }
+}
\ No newline at end of file
diff --git a/flexiapi/tests/Feature/AuthenticateDigestAndKeyTest.php b/flexiapi/tests/Feature/AuthenticateDigestAndKeyTest.php
index 0ff69ee..586d15e 100644
--- a/flexiapi/tests/Feature/AuthenticateDigestAndKeyTest.php
+++ b/flexiapi/tests/Feature/AuthenticateDigestAndKeyTest.php
@@ -22,7 +22,6 @@ namespace Tests\Feature;
 use App\Password;
 
 use Illuminate\Foundation\Testing\RefreshDatabase;
-use Illuminate\Foundation\Testing\WithFaker;
 use Tests\TestCase;
 
 class AuthenticateDigestAndKeyTest extends TestCase
@@ -34,14 +33,14 @@ class AuthenticateDigestAndKeyTest extends TestCase
 
     public function testMandatoryFrom()
     {
-        $password = Password::factory()->create();
+        Password::factory()->create();
         $response = $this->json($this->method, $this->route);
         $response->assertStatus(422);
     }
 
     public function testWrongFrom()
     {
-        $password = Password::factory()->create();
+        Password::factory()->create();
         $response = $this->withHeaders([
             'From' => 'sip:missing@username',
         ])->json($this->method, $this->route);
diff --git a/flexisip-account-manager.spec b/flexisip-account-manager.spec
index d0195d3..44499d5 100644
--- a/flexisip-account-manager.spec
+++ b/flexisip-account-manager.spec
@@ -8,7 +8,7 @@
 #%define _datadir           %{_datarootdir}
 #%define _docdir            %{_datadir}/doc
 
-%define build_number 48
+%define build_number 49
 %define var_dir /var/opt/belledonne-communications
 %define opt_dir /opt/belledonne-communications/share/flexisip-account-manager
 %define env_file "$RPM_BUILD_ROOT/etc/flexisip-account-manager/flexiapi.env"