diff --git a/DeviceDetector/MobileDetector.php b/DeviceDetector/MobileDetector.php
index 759c966..02b00db 100644
--- a/DeviceDetector/MobileDetector.php
+++ b/DeviceDetector/MobileDetector.php
@@ -19,6 +19,6 @@
  * @author suncat2000 <nikolay.kotovsky@gmail.com>
  *
  */
-class MobileDetector extends MobileDetect
+class MobileDetector extends MobileDetect implements MobileDetectorInterface
 {
 }
diff --git a/DeviceDetector/MobileDetectorInterface.php b/DeviceDetector/MobileDetectorInterface.php
new file mode 100644
index 0000000..a743bbb
--- /dev/null
+++ b/DeviceDetector/MobileDetectorInterface.php
@@ -0,0 +1,76 @@
+<?php
+
+/*
+ * This file is part of the MobileDetectBundle.
+ *
+ * (c) Nikolay Ivlev <nikolay.kotovsky@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace SunCat\MobileDetectBundle\DeviceDetector;
+
+/**
+ * MobileDetectorInterface interface
+ *
+ * @author pierrickmartos <pierrick.martos@gmail.com>
+ *
+ */
+interface MobileDetectorInterface
+{
+    /**
+     * Check if the device is mobile.
+     * Returns true if any type of mobile device detected, including special ones
+     * @param  null $userAgent   deprecated
+     * @param  null $httpHeaders deprecated
+     * @return bool
+     */
+    public function isMobile($userAgent = null, $httpHeaders = null);
+
+    /**
+     * Check if the device is a tablet.
+     * Return true if any type of tablet device is detected.
+     *
+     * @param  string $userAgent   deprecated
+     * @param  array  $httpHeaders deprecated
+     * @return bool
+     */
+    public function isTablet($userAgent = null, $httpHeaders = null);
+
+    /**
+     * This method checks for a certain property in the
+     * userAgent.
+     * @todo: The httpHeaders part is not yet used.
+     *
+     * @param  string        $key
+     * @param  string        $userAgent   deprecated
+     * @param  string        $httpHeaders deprecated
+     * @return bool|int|null
+     */
+    public function is($key, $userAgent = null, $httpHeaders = null);
+
+    /**
+     * Some detection rules are relative (not standard),
+     * because of the diversity of devices, vendors and
+     * their conventions in representing the User-Agent or
+     * the HTTP headers.
+     *
+     * This method will be used to check custom regexes against
+     * the User-Agent string.
+     *
+     * @param $regex
+     * @param  string $userAgent
+     * @return bool
+     *
+     * @todo: search in the HTTP headers too.
+     */
+    public function match($regex, $userAgent = null);
+
+    /**
+     * Retrieve the mobile grading, using self::MOBILE_GRADE_* constants.
+     *
+     * @return string One of the self::MOBILE_GRADE_* constants.
+     */
+    public function mobileGrade();
+}
diff --git a/Resources/config/mobile_detect.xml b/Resources/config/mobile_detect.xml
index 0311b97..609402f 100644
--- a/Resources/config/mobile_detect.xml
+++ b/Resources/config/mobile_detect.xml
@@ -14,7 +14,8 @@
 
     <services>
 
-        <service id="mobile_detect.mobile_detector.default" class="%mobile_detect.mobile_detector.class%"/>
+        <service id="mobile_detect.mobile_detector.default" class="%mobile_detect.mobile_detector.class%" autowire="true" autoconfigure="true" />
+        <service id="SunCat\MobileDetectBundle\DeviceDetector\MobileDetectorInterface" alias="mobile_detect.mobile_detector.default" />
 
         <service id="mobile_detect.device_view" class="%mobile_detect.device_view.class%">
             <argument type="service" id="request_stack" on-invalid="null"/>
diff --git a/composer.json b/composer.json
index 19b2f69..31c2f6b 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
         "php": ">=5.5.9",
         "symfony/framework-bundle": "~2.7|~3.3|~4.0|~5.0",
         "mobiledetect/mobiledetectlib": "~2.8",
-        "twig/twig": "~1.26|~2.0||^3.0"
+        "twig/twig": "~1.26|~2.0|^3.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.8.35|^5.4.3|^6.0",