TheSamsung Galaxy Express 2 (SM-G3815) is a smartphone made by Samsung which was launched in October 2013 featuring a similar design and specifications of theSamsung Galaxy S4 Mini but with a bigger 4.5 inch screen and different cameras.

The Galaxy Express 2 is powered byAndroid, aLinux-based,open sourcemobile operating system developed byGoogle and introduced commercially in 2008.^[1][2] Among other features, the software allows users to maintain customized home screens which can contain shortcuts to applications andwidgets for displaying information. Four shortcuts to frequently used applications can be stored on a dock at the bottom of the screen; the button in the center of the dock opens the application drawer, which displays a menu containing all of the apps installed on the device. A tray accessed by dragging from the top of the screen allows users to view notifications received from other apps, and containstoggle switches for commonly used functions. Pre-loaded apps also provide access toGoogle's various services. The Galaxy Express uses Samsung's proprietaryTouchWizgraphical user interface (GUI). The "Nature UX 2.0" used by the Galaxy Express 2 has a more "organic" feel than previous versions, and contains more interactive elements such as a water ripple effect on thelock screen. To complement the TouchWiz interface, and as a response to Apple'sSiri, the phone includes theS Voice which is Samsung's version of anintelligent personal assistant. S Voice can recognize eight languages including English,Korean andFrench. Based onVlingo, S Voice enables the user to verbally control 20 functions such as playing a song, setting the alarm, or activating driving mode; it relies onWolfram Alpha for online searches.^[3]

The Galaxy Express 2 comes withAndroid version 4.2.2, named "Jellybean", which employsGoogle Now, a voice-assistant similar to S Voice, and incorporates other software changes. The update to 4.4.2 KitKat is available through Over-The-Air upgrade or throughSamsung Kies.

The Galaxy Express 2 comes with a multitude of pre-installedapplications, including standard Android ones likeYouTube,Google+, Voice Search, Google Play,Gmail, Map, and Calendar, in addition to Samsung-specific apps such asS Voice,ChatON, Game Hub, Video Hub, Social Hub and Navigation.^[4] The user is able to accessGoogle Play, adigital-distribution multimedia-content service exclusive to Android, to download applications, movies, music, TV programs, games, books, and magazines.^[5]

The Galaxy Express 2 can access and play traditional media formats such as music, movies, TV programs,audiobooks, andpodcasts, and can sort its media library alphabetically by song title, artist,album, playlist, folder, andgenre. It also includes Samsung's ownproprietary music management and download application called "Music Hub", designed to compete with Apple's iTunes,iCloud, andiTunes Match services. Music Hub's music catalogue contains over 19 million songs.^[6]

The phone enablesvideo calling with its 0.3 MP front-facing camera, and with support for theaptXcodec, improvesBluetooth-headset connectivity.^[3]Texting on the Galaxy Express 2 does not embody any new significant features from other Samsung Galaxy devices. Speech-to-text is aided by the Vlingo and Google's voice-recognition assistant. Not unlike other Android devices, there are a multitude of third-party typing applications available that could complement the Galaxy Express 2's stock keyboard.^[3]

The Galaxy Express 2 has apolycarbonate plasticchassis measuring 132.4 mm (5.21 in) long, 65.8 mm (2.59 in) wide, and 9.8 mm (0.39 in) thick, with the device weighing 134.2 grams (4.73 oz).

Internally, the Galaxy Express 2 usesQualcomm'sSnapdragon 400 SoC featuring a dual-core 1.7 GHzKrait CPU and an Adreno 305 GPU.^[7]

The Galaxy Express 2 has 1.5 GB ofRAM which comes with 8 GB of internal storage, with a 64 GB version to be available internationally; additionally,microSDXC storage offers a further 64 GB for a potential total of 72 GB.^[4]

The Galaxy Express 2'sPLSTFT LCD display measures 4.5 inches (110 mm) which comes with a 540x960-pixel resolution with a 245 pixel per inch (PPI, a measure ofpixel density).^[4]

The Galaxy Express 2 has a 5-megapixel camera which can take 2,592x1,944 resolution photos and record videos in (720p) resolution. Samsung improved the camera's software over that of its predecessor to include zeroshutter lag, and Burst Mode and Best Shot, which work together to quickly take numerous photos before the best-judged frame is selected. The phone can also take pictures while recording videos.^[7] The rear-facing camera is complemented by a 0.3-megapixel front-facing camera. The phone has LED flash and autofocus.^[8]

In addition to the 4.5-inch (110 mm) touchscreen, the Galaxy Express 2 has several physicaluser inputs, including a home button located below the screen, a volume key on the left side and a power/lock key on the right. At the top there is a 3.5-millimetre (0.14 in)TRRS headphone jack and one of the two microphones on the Galaxy Express 2; the other is located below the home button.

The Galaxy Express 2'sli-ion 2,100 mAh battery is said to have a 581-hourstandby time or 11 hours of talk time on 3G, compared to 586 hours in standby and 19 hours of talk time on 2G.^[4] Built into the battery isnear field communication connectivity, which allows users to share map directions and YouTube videos quickly usingWi-Fi Direct (through Android Beam), and performnon-touch payments at shops that employ specially equipped NFCcash registers.^[9] To help minimize battery consumption, Samsung has introduced "Smart Stay", an ability to track a user's eyes and turn off whenever the person is not looking at it.^[3] The battery can bewirelessly charged using a special charging pad (sold separately) that utilizes magnetic resonance to produce amagnetic field through which electricity could be transferred.

• Android (operating system) devices
• Discontinued Samsung Galaxy smartphones
• Mobile phones introduced in 2013
• Mobile phones with user-replaceable battery

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