Samsung Galaxy Express 2

Samsung Electronics

Industry	Consumer electronics, Telecommunications
Founded	March 1, 1938 (1938-03-01) in Daegu, South Korea
Founder	Lee Byung-chul
Headquarters	Suwon , South Korea
Products	Smartphones, tablets, consumer electronics
Website	www.samsung.com

Template:Infobox mobile phone The Samsung Galaxy Express 2 (model SM-G3815) is a smartphone produced by Samsung that debuted in October of 2013. It shares many design elements and specifications with the Samsung Galaxy S4 Mini, but distinguishes itself with a larger screen measuring approximately 4.5 inches and differing camera configurations.

Software and services

Further information: Android (operating system), TouchWiz, and S Voice

Operating on the Android platform—a Linux-based, open-source mobile operating system developed by Google and commercially launched in 2008—the Galaxy Express 2 offers a customizable user experience. Users can personalize multiple home screens by adding shortcuts to applications and widgets that provide dynamic information displays. At the bottom of the screen lies a dock capable of holding four frequently accessed apps; the central button within this dock opens an app drawer listing all installed programs. Notifications from various apps are accessible through a pull-down tray at the top of the display, which also contains toggle switches for quick access to common settings. The device comes preloaded with applications granting access to Google's suite of services.

Samsung's proprietary graphical interface, TouchWiz, is implemented on this model; specifically, the "Nature UX 2.0" iteration offers a more naturalistic aesthetic compared to earlier versions and incorporates interactive features such as a water ripple animation on the lock screen. To rival Apple's Siri, Samsung integrates S Voice, an intelligent personal assistant capable of understanding eight languages including English, Korean, and French. Utilizing technology from Vlingo, S Voice allows voice control over approximately twenty functions—ranging from music playback to alarm setting and driving mode activation—and leverages Wolfram Alpha for online queries.

The device runs Android version 4.2.2 "Jelly Bean," which includes Google Now—a voice assistant comparable to S Voice—and various software enhancements. Users can upgrade to Android version 4.4.2 "KitKat" either via Over-The-Air updates or through Samsung's Kies software.

Pre-installed software on the Galaxy Express 2 encompasses standard Android applications such as YouTube, Google+, Voice Search, Google Play Store, Gmail, Maps, and Calendar alongside Samsung-specific offerings like S Voice, ChatON messaging service, Game Hub, Video Hub, Social Hub, and Navigation tools. Users have access to Google Play’s digital content distribution platform for downloading apps as well as multimedia including movies, music tracks, TV shows, games, books, and magazines.

Media playback capabilities include support for common audio and video formats such as music files, films, television episodes, audiobooks, and podcasts. The media library can be organized alphabetically by song title, artist name, album title, playlists created by the user, folder structure or genre classification. Additionally present is Samsung’s proprietary Music Hub application—a music management and download service designed to compete with Apple’s iTunes ecosystem—including iCloud and iTunes Match—with a catalog boasting over nineteen million tracks.

Equipped with a front-facing camera of VGA resolution (0.3 MP), the phone supports video calling functionality. Bluetooth connectivity benefits from aptX codec support for enhanced audio quality when using compatible headsets. Text input functionality does not introduce significant innovations beyond other devices in Samsung’s Galaxy lineup; speech-to-text features are supported through Vlingo technology alongside Google’s voice recognition services. Like most Android smartphones, users may install third-party keyboard applications to augment or replace the default input method.

Hardware and design

The Galaxy Express 2 features a polycarbonate plastic chassis with dimensions of 132.4 mm (5.21 in) in length, 65.8 mm (2.59 in) in width, and 9.8 mm (0.39 in) in thickness, weighing approximately 134.2 grams (4.73 oz).

Under the hood, this device is powered by Qualcomm's Snapdragon 400 system on chip, which includes a dual-core 1.7 GHz Krait processor paired with an Adreno 305 graphics unit.

Equipped with 1.5 GB of RAM, the Galaxy Express 2 offers 8 GB of built-in storage, while an international version provides 64 GB of internal memory. Furthermore, the phone supports microSDXC cards up to 64 GB, allowing for a maximum combined storage capacity of 72 GB.

The display is a 4.5 inches (110 mm) PLS TFT LCD screen presenting a resolution of 540x960 pixels and a pixel density of 245 pixels per inch (PPI).

For photography, the device sports a 5-megapixel rear camera capable of capturing images at 2,592x1,944 resolution and recording videos in (720p) HD quality. Samsung enhanced the camera software compared to its predecessor by eliminating shutter lag and introducing features such as Burst Mode and Best Shot, which rapidly take multiple photos and automatically select the optimal frame. Additionally, users can snap photos while recording video. The front-facing camera has a resolution of 0.3 megapixels. The rear camera also includes LED flash and autofocus functionality.

Beyond the 4.5-inch (110 mm) touchscreen interface, the Galaxy Express 2 incorporates physical controls: a home button positioned beneath the display, volume buttons on the left edge, and a power/lock button on the right side. At the top edge lies a 3.5-millimetre (0.14 in) TRRS headphone jack along with one of two microphones; the second microphone is located below the home button.

The device is powered by a li-ion battery rated at 2,100 mAh, which offers up to 581 hours of standby time or approximately 11 hours of talk time on a 3G network. On 2G networks, standby time extends to 586 hours while talk time can reach up to 19 hours. Integrated within the battery is near field communication technology that facilitates rapid sharing of map directions and YouTube content via Wi-Fi Direct through Android Beam, as well as enabling contactless payments at compatible NFC-enabled retail terminals. To optimize power usage, Samsung has implemented "Smart Stay," a feature that monitors user eye movement to keep the screen active only when being viewed. Wireless charging is supported through an optional charging pad employing magnetic resonance technology to generate a magnetic field for energy transfer without cables.