diff --git a/PHASE_3_TRACKER.md b/PHASE_3_TRACKER.md
index 8a178a1..8aa23eb 100644
--- a/PHASE_3_TRACKER.md
+++ b/PHASE_3_TRACKER.md
@@ -2,12 +2,12 @@
 
 ## Milestone 1: Core-System Erweiterung (Sprint 1.1-1.3)
 
-### Sprint 1.1: Tools.php Erweiterung (75% abgeschlossen)
+### Sprint 1.1: Tools.php Erweiterung (90% abgeschlossen)
 - [x] Security-Funktionen (hash, getToken, AdminToken, String-Operationen, Utility-Funktionen)
 - [x] File-Operationen (deleteDirectory, file_get_contents, copy, scandir, etc.)
 - [x] Math-Funktionen (ps_round, math_round, round_helper, ceilf, floorf, spreadAmount)
 - [x] Cache-System Erweiterung (enableCache, restoreCacheSettings, clearCache, clearCompile, clearSmartyCache, clearSf2Cache, clearAllCache, getMemoryLimit, getOctets, isX86_64arch, isPHPCLI, argvToGET, getMaxUploadSize, convertBytes)
-- [ ] Context.php Erweiterung
+- [x] Context.php Erweiterung (getContext, cloneContext, updateCustomer, getTranslator, getTranslatorFromLocale, getComputingPrecision, Device-Erkennung, Mobile-Erkennung)
 - [ ] Cart.php Erweiterung
 
 ### Sprint 1.2: Datenbank & ORM (0% abgeschlossen)
@@ -122,10 +122,9 @@
 - [ ] Monitoring Setup
 - [ ] Backup Setup
 
-## Gesamtfortschritt: 11% (1 von 18 Sprints zu 75% abgeschlossen)
+## Gesamtfortschritt: 13% (1 von 18 Sprints zu 90% abgeschlossen)
 
 ### Nächste Schritte:
-1. Context.php Erweiterung
-2. Cart.php Erweiterung
-3. Sprint 1.1 abschließen
-4. Sprint 1.2 beginnen (Datenbank & ORM) 
\ No newline at end of file
+1. Cart.php Erweiterung
+2. Sprint 1.1 abschließen
+3. Sprint 1.2 beginnen (Datenbank & ORM) 
\ No newline at end of file
diff --git a/classes/Context.php b/classes/Context.php
index a1a2ed3..57d0060 100644
--- a/classes/Context.php
+++ b/classes/Context.php
@@ -10,24 +10,80 @@
 
 class Context
 {
-    /** @var Context */
+    /** @var Context|null */
     protected static $instance;
 
-    /** @var Shop */
-    public $shop;
-    /** @var Language */
-    public $language;
-    /** @var Country */
-    public $country;
-    /** @var Configuration */
-    public $configuration;
-    /** @var Cookie */
+    /** @var Cart|null */
+    public $cart;
+
+    /** @var Customer|null */
+    public $customer;
+
+    /** @var Cookie|null */
     public $cookie;
-    /** @var Session */
-    public $session;
-    /** @var array */
+
+    /** @var Link|null */
+    public $link;
+
+    /** @var Country|null */
+    public $country;
+
+    /** @var Employee|null */
+    public $employee;
+
+    /** @var Controller|null */
     public $controller;
 
+    /** @var Language|null */
+    public $language;
+
+    /** @var Currency|null */
+    public $currency;
+
+    /** @var Shop|null */
+    public $shop;
+
+    /** @var Smarty|null */
+    public $smarty;
+
+    /** @var int */
+    public $mode;
+
+    /** @var float */
+    public $virtualTotalTaxExcluded = 0;
+
+    /** @var float */
+    public $virtualTotalTaxIncluded = 0;
+
+    /** @var Translator|null */
+    protected $translator = null;
+
+    /** @var int */
+    protected $priceComputingPrecision = null;
+
+    /** @var bool|null */
+    protected $mobile_device = null;
+
+    /** @var bool|null */
+    protected $is_mobile = null;
+
+    /** @var bool|null */
+    protected $is_tablet = null;
+
+    /** @var MobileDetect|null */
+    public $mobile_detect = null;
+
+    // Device constants
+    public const DEVICE_COMPUTER = 1;
+    public const DEVICE_TABLET = 2;
+    public const DEVICE_MOBILE = 4;
+
+    // Mode constants
+    public const MODE_STD = 1;
+    public const MODE_STD_CONTRIB = 2;
+    public const MODE_HOST_CONTRIB = 4;
+    public const MODE_HOST = 8;
+
     private function __construct()
     {
         // Initialisierung erfolgt später
@@ -35,7 +91,7 @@ class Context
 
     /**
      * Singleton-Instanz holen
-     * @return Context
+     * @return Context|null
      */
     public static function getContext()
     {
@@ -44,4 +100,238 @@ class Context
         }
         return self::$instance;
     }
+
+    /**
+     * Set instance for testing
+     *
+     * @param Context $testInstance
+     */
+    public static function setInstanceForTesting($testInstance)
+    {
+        self::$instance = $testInstance;
+    }
+
+    /**
+     * Delete testing instance
+     */
+    public static function deleteTestingInstance()
+    {
+        self::$instance = null;
+    }
+
+    /**
+     * Clone current context object
+     *
+     * @return static
+     */
+    public function cloneContext()
+    {
+        return clone $this;
+    }
+
+    /**
+     * Get MobileDetect tool object
+     *
+     * @return MobileDetect
+     */
+    public function getMobileDetect(): MobileDetect
+    {
+        if ($this->mobile_detect === null) {
+            $this->mobile_detect = new MobileDetect();
+        }
+
+        return $this->mobile_detect;
+    }
+
+    /**
+     * Check if visitor's device is a mobile device
+     *
+     * @return bool
+     */
+    public function isMobile(): bool
+    {
+        if ($this->is_mobile === null) {
+            $mobileDetect = $this->getMobileDetect();
+            $this->is_mobile = $mobileDetect->isMobile();
+        }
+
+        return $this->is_mobile;
+    }
+
+    /**
+     * Check if visitor's device is a tablet device
+     *
+     * @return bool
+     */
+    public function isTablet(): bool
+    {
+        if ($this->is_tablet === null) {
+            $mobileDetect = $this->getMobileDetect();
+            $this->is_tablet = $mobileDetect->isTablet();
+        }
+
+        return $this->is_tablet;
+    }
+
+    /**
+     * Get mobile device
+     *
+     * @return bool
+     */
+    public function getMobileDevice(): bool
+    {
+        if ($this->mobile_device === null) {
+            $this->mobile_device = $this->isMobile() || $this->isTablet();
+        }
+
+        return $this->mobile_device;
+    }
+
+    /**
+     * Get device type
+     *
+     * @return int
+     */
+    public function getDevice(): int
+    {
+        if ($this->isMobile()) {
+            return self::DEVICE_MOBILE;
+        }
+
+        if ($this->isTablet()) {
+            return self::DEVICE_TABLET;
+        }
+
+        return self::DEVICE_COMPUTER;
+    }
+
+    /**
+     * Get current locale
+     *
+     * @return string
+     */
+    public function getCurrentLocale()
+    {
+        if ($this->language) {
+            return $this->language->locale;
+        }
+
+        return 'en-US';
+    }
+
+    /**
+     * Update customer in context
+     *
+     * @param Customer $customer
+     */
+    public function updateCustomer(Customer $customer)
+    {
+        // Update the customer in context object
+        $this->customer = $customer;
+
+        // Update basic information in the cookie
+        if ($this->cookie) {
+            $this->cookie->id_customer = (int) $customer->id;
+            $this->cookie->customer_lastname = $customer->lastname;
+            $this->cookie->customer_firstname = $customer->firstname;
+            $this->cookie->passwd = $customer->passwd;
+            $this->cookie->logged = true;
+            $customer->logged = true;
+            $this->cookie->email = $customer->email;
+            $this->cookie->is_guest = $customer->isGuest();
+
+            // Handle cart following
+            if (Configuration::get('PS_CART_FOLLOWING')
+                && (empty($this->cookie->id_cart) || Cart::getNbProducts((int) $this->cookie->id_cart) == 0)
+                && $idCart = (int) Cart::lastNoneOrderedCart($this->customer->id)
+            ) {
+                $this->cart = new Cart($idCart);
+                $this->cart->secure_key = $customer->secure_key;
+                $this->cookie->id_guest = (int) $this->cart->id_guest;
+            } else {
+                // Initialize new visit
+                if (!$this->cookie->id_guest) {
+                    Guest::setNewGuest($this->cookie);
+                }
+
+                // Update cart if exists
+                if (Validate::isLoadedObject($this->cart)) {
+                    $this->cart->secure_key = $customer->secure_key;
+                    $this->cart->id_guest = (int) $this->cookie->id_guest;
+                    $this->cart->id_customer = (int) $customer->id;
+                    $this->cart->updateAddressId($this->cart->id_address_delivery, (int) Address::getFirstCustomerAddressId((int) $customer->id));
+                    $this->cart->id_address_delivery = (int) Address::getFirstCustomerAddressId((int) $customer->id);
+                    $this->cart->id_address_invoice = (int) Address::getFirstCustomerAddressId((int) $customer->id);
+                }
+            }
+
+            // Save cart and update cookie
+            if (Validate::isLoadedObject($this->cart)) {
+                $this->cart->save();
+                $this->cookie->id_cart = (int) $this->cart->id;
+            }
+
+            // Save cookie
+            $this->cookie->write();
+        }
+    }
+
+    /**
+     * Get translator
+     *
+     * @param bool $isInstaller
+     * @return Translator
+     */
+    public function getTranslator($isInstaller = false)
+    {
+        if (null !== $this->translator && $this->language && $this->language->locale === $this->translator->getLocale()) {
+            return $this->translator;
+        }
+
+        if ($isInstaller || !$this->language) {
+            $this->translator = $this->getTranslatorFromLocale('en-US');
+        } else {
+            $this->translator = $this->getTranslatorFromLocale($this->language->locale);
+        }
+
+        return $this->translator;
+    }
+
+    /**
+     * Get translator from locale
+     *
+     * @param string $locale
+     * @return Translator
+     */
+    public function getTranslatorFromLocale($locale)
+    {
+        $cacheDir = _PS_CACHE_DIR_ . 'translations';
+        $translator = new Translator($locale, null, $cacheDir, false);
+
+        return $translator;
+    }
+
+    /**
+     * Get computing precision
+     *
+     * @return int
+     */
+    public function getComputingPrecision()
+    {
+        if ($this->priceComputingPrecision === null) {
+            $this->priceComputingPrecision = (int) Configuration::get('PS_PRICE_COMPUTE_PRECISION');
+        }
+
+        return $this->priceComputingPrecision;
+    }
+
+    /**
+     * Check mobile context
+     */
+    protected function checkMobileContext()
+    {
+        if ($this->getMobileDevice()) {
+            $this->mode = self::MODE_STD;
+        }
+    }
 } 
\ No newline at end of file