diff --git a/CHANGELOG.md b/CHANGELOG.md
index b3f5b35..e30ce57 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ v1.5
 - Fix FLEXIAPI-153 Add phone and email to be changed in the Activity panel
 - Fix FLEXIAPI-151 Migrate to hCaptcha
 - Fix FLEXIAPI-150 Use the same account_id parameter for both API and Web routes
+- Fix FLEXIAPI-149 Add a toggle to disable phone check on username for admin endpoints and forms
 - Fix FLEXIAPI-148 Reuse AccountService in the POST /api/accounts admin endpoint
 - FIX FLEXIAPI-146 Allow users to manage their own devices
 - Fix FLEXIAPI-145 Put back the 'code' parameter as an alias for the 'confirmation_key' for the activateEmail and activatePhone endpoints
diff --git a/flexiapi/.env.example b/flexiapi/.env.example
index 5f243ae..3086ea3 100644
--- a/flexiapi/.env.example
+++ b/flexiapi/.env.example
@@ -12,6 +12,8 @@ APP_FLEXISIP_PUSHER_FIREBASE_KEYSMAP= # Each pair is separated using a space and
 APP_API_KEY_EXPIRATION_MINUTES=60 # Number of minutes the generated API Keys are valid
 APP_API_ACCOUNT_CREATION_TOKEN_RETRY_MINUTES=60 # Number of minutes between two consecutive account_creation_token creation
 
+APP_ALLOW_PHONE_NUMBER_USERNAME_ADMIN_API=false # Allow phone numbers to be set as username in admin account creation endpoints
+
 # Risky toggles
 APP_ADMINS_MANAGE_MULTI_DOMAINS=false # Allow admins to handle all the accounts in the database
 APP_DANGEROUS_ENDPOINTS=false # Enable some dangerous endpoints used for XMLRPC like fallback usage
diff --git a/flexiapi/app/Http/Controllers/Admin/AccountController.php b/flexiapi/app/Http/Controllers/Admin/AccountController.php
index f7e3a15..97f915b 100644
--- a/flexiapi/app/Http/Controllers/Admin/AccountController.php
+++ b/flexiapi/app/Http/Controllers/Admin/AccountController.php
@@ -26,7 +26,7 @@ use Carbon\Carbon;
 
 use App\Account;
 use App\ContactsList;
-use App\Http\Requests\CreateAccountRequest;
+use App\Http\Requests\CreateAccountWithoutUsernamePhoneCheck;
 use App\Http\Requests\UpdateAccountRequest;
 
 class AccountController extends Controller
@@ -79,7 +79,7 @@ class AccountController extends Controller
         ]);
     }
 
-    public function store(CreateAccountRequest $request)
+    public function store(CreateAccountWithoutUsernamePhoneCheck $request)
     {
         $request->validate([
             'password' => 'confirmed'
diff --git a/flexiapi/app/Http/Controllers/Api/Admin/AccountController.php b/flexiapi/app/Http/Controllers/Api/Admin/AccountController.php
index 4994c9b..e04aa5c 100644
--- a/flexiapi/app/Http/Controllers/Api/Admin/AccountController.php
+++ b/flexiapi/app/Http/Controllers/Api/Admin/AccountController.php
@@ -21,17 +21,14 @@ namespace App\Http\Controllers\Api\Admin;
 
 use App\Http\Controllers\Controller;
 use Illuminate\Http\Request;
-use Illuminate\Support\Str;
 use Illuminate\Support\Facades\Log;
-use Carbon\Carbon;
 
 use App\Account;
 use App\AccountTombstone;
 use App\AccountType;
-use App\ActivationExpiration;
 use App\ContactsList;
-use App\Http\Controllers\Account\AuthenticateController as WebAuthenticateController;
 use App\Http\Requests\CreateAccountRequest;
+use App\Http\Requests\CreateAccountWithoutUsernamePhoneCheck;
 use App\Http\Requests\UpdateAccountRequest;
 use App\Rules\PasswordAlgorithm;
 use App\Services\AccountService;
@@ -129,7 +126,7 @@ class AccountController extends Controller
         return $account->makeVisible(['provisioning_token']);
     }
 
-    public function store(CreateAccountRequest $request)
+    public function store(CreateAccountWithoutUsernamePhoneCheck $request)
     {
         return (new AccountService)->store($request, asAdmin: true)->makeVisible(['confirmation_key', 'provisioning_token']);
     }
diff --git a/flexiapi/app/Http/Requests/CreateAccountRequest.php b/flexiapi/app/Http/Requests/CreateAccountRequest.php
index c85de43..7834cd9 100644
--- a/flexiapi/app/Http/Requests/CreateAccountRequest.php
+++ b/flexiapi/app/Http/Requests/CreateAccountRequest.php
@@ -32,9 +32,9 @@ class CreateAccountRequest extends FormRequest
                 Rule::unique('accounts', 'username')->where(function ($query) {
                     $query->where('domain', resolveDomain($this));
                 }),
-                /*Rule::unique('accounts_tombstones', 'username')->where(function ($query) use ($request) {
-                    $query->where('domain', config('app.sip_domain'));
-                }),*/
+                Rule::unique('accounts_tombstones', 'username')->where(function ($query) {
+                    $query->where('domain', resolveDomain($this));
+                }),
                 'filled',
             ],
             'dictionary' => [new Dictionary],
diff --git a/flexiapi/app/Http/Requests/CreateAccountWithoutUsernamePhoneCheck.php b/flexiapi/app/Http/Requests/CreateAccountWithoutUsernamePhoneCheck.php
new file mode 100644
index 0000000..79c9ac6
--- /dev/null
+++ b/flexiapi/app/Http/Requests/CreateAccountWithoutUsernamePhoneCheck.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Http\Requests;
+
+use App\Rules\IsNotPhoneNumber;
+
+class CreateAccountWithoutUsernamePhoneCheck extends CreateAccountRequest
+{
+    public function authorize()
+    {
+        return true;
+    }
+
+    public function rules()
+    {
+        $parentRules = parent::rules();
+
+        if (config('app.allow_phone_number_username_admin_api') == true) {
+            array_splice(
+                $parentRules['username'],
+                array_search(new IsNotPhoneNumber(), $parentRules['username']),
+                1
+            );
+        }
+
+        return $parentRules;
+    }
+}
diff --git a/flexiapi/config/app.php b/flexiapi/config/app.php
index f514ee9..55d7831 100644
--- a/flexiapi/config/app.php
+++ b/flexiapi/config/app.php
@@ -31,6 +31,7 @@ return [
     'transport_protocol_text' => env('ACCOUNT_TRANSPORT_PROTOCOL_TEXT', 'TLS (recommended), TCP or UDP'),
 
     'account_email_unique' => env('ACCOUNT_EMAIL_UNIQUE', false),
+    'allow_phone_number_username_admin_api' => env('APP_ALLOW_PHONE_NUMBER_USERNAME_ADMIN_API', false),
     'blacklisted_usernames' => env('ACCOUNT_BLACKLISTED_USERNAMES', ''),
     'account_username_regex' => env('ACCOUNT_USERNAME_REGEX', '^[a-z0-9+_.-]*$'),
     'account_default_password_algorithm' => env('ACCOUNT_DEFAULT_PASSWORD_ALGORITHM', 'SHA-256'),
diff --git a/flexiapi/resources/views/admin/account/create_edit.blade.php b/flexiapi/resources/views/admin/account/create_edit.blade.php
index dbe3ed0..dbc4633 100644
--- a/flexiapi/resources/views/admin/account/create_edit.blade.php
+++ b/flexiapi/resources/views/admin/account/create_edit.blade.php
@@ -39,7 +39,7 @@
         <h2>Connexion</h2>
         <div>
             <input placeholder="Username" required="required" name="username" type="text"
-                value="@if ($account->id){{ $account->username }}@else{{ old('username') }} @endif"
+                value="@if($account->id){{ $account->username }}@else{{ old('username') }}@endif"
                 @if ($account->id) readonly @endif>
             <label for="username">Username</label>
             @include('parts.errors', ['name' => 'username'])
@@ -53,7 +53,7 @@
 
         <div>
             <input placeholder="John Doe" name="display_name" type="text"
-                value="@if ($account->id){{ $account->display_name }}@else{{ old('display_name') }} @endif">
+                value="@if($account->id){{ $account->display_name }}@else{{ old('display_name') }}@endif">
             <label for="display_name">Display Name</label>
             @include('parts.errors', ['name' => 'display_name'])
         </div>
@@ -75,14 +75,14 @@
 
         <div>
             <input placeholder="Email" name="email" type="email"
-                value="@if ($account->id) {{ $account->email }}@else{{ old('email') }} @endif">
+                value="@if($account->id){{ $account->email }}@else{{ old('email') }}@endif">
             <label for="email">Email</label>
             @include('parts.errors', ['name' => 'email'])
         </div>
 
         <div>
             <input placeholder="+12123123" name="phone" type="text"
-                value="@if ($account->id) {{ $account->phone }}@else{{ old('phone') }} @endif">
+                value="@if($account->id){{ $account->phone }}@else{{ old('phone') }}@endif">
             <label for="phone">Phone</label>
             @include('parts.errors', ['name' => 'phone'])
         </div>
diff --git a/flexiapi/tests/Feature/ApiAccountTest.php b/flexiapi/tests/Feature/ApiAccountTest.php
index 6606757..7f0473f 100644
--- a/flexiapi/tests/Feature/ApiAccountTest.php
+++ b/flexiapi/tests/Feature/ApiAccountTest.php
@@ -86,15 +86,25 @@ class ApiAccountTest extends TestCase
         $username = '+33612121212';
         $domain = 'example.com';
 
-        $response = $this->keyAuthenticated($password->account)
+        $this->keyAuthenticated($password->account)
             ->json($this->method, $this->route, [
                 'username' => $username,
                 'domain' => $domain,
                 'algorithm' => 'SHA-256',
                 'password' => '123456',
-            ]);
+            ])
+            ->assertJsonValidationErrors(['username']);
 
-        $response->assertJsonValidationErrors(['username']);
+        config()->set('app.allow_phone_number_username_admin_api', true);
+
+        $this->keyAuthenticated($password->account)
+            ->json($this->method, $this->route, [
+                'username' => $username,
+                'domain' => $domain,
+                'algorithm' => 'SHA-256',
+                'password' => '123456',
+            ])
+            ->assertStatus(200);
     }
 
     public function testUsernameNotSIP()