Question: Samsung WatchON is available on many Galaxy phones, including what phone that was unveiled during a Samsung press conference at IFA Berlin on September 3rd, 2014?

Context paragraphs:
Samsung WatchON: Samsung WatchON, first introduced on Galaxy S4 devices, was a service that allowed users to view programming information on their TV or set-top box, and choose programs directly from their mobile devices.  Samsung WatchON also provides real-time programming and VOD content recommendations based on the user's viewing patterns; it also includes a virtual remote controller which uses the built-in IR Blaster of the device to control televisions, home theater systems, and media players of any brand, provided they are IR compatible.  Samsung WatchON is available on the Galaxy S4, Galaxy S4 Mini, Galaxy S5, Galaxy S5 Mini, Galaxy Note 3, Galaxy Note 3 Neo, Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Note 8.0, Galaxy Note 10.1, Galaxy Note 10.1 2014 Edition, Galaxy Note Pro 12.2, Galaxy Tab 2 7.0, Galaxy Tab 2 10.1, Galaxy Tab 3 7.0, Galaxy Tab 3 8.0, Galaxy Tab 3 10.1, Galaxy Tab 4 7.0, Galaxy Tab 4 8.0, Galaxy Tab 4 10.1, Galaxy Tab Pro 8.4, Galaxy Tab Pro 10.1, Galaxy Tab Pro 12.2, Galaxy Tab S 8.4, Galaxy Tab S 10.5, and Gear 2 devices.

Samsung Ativ S: The Samsung ATIV S is a touchscreen, slate smartphone manufactured by Samsung Electronics running the Windows Phone 8 operating system, upgradeable to Windows Phone 8.1.  The ATIV S is Samsung's first Windows Phone 8 device, and one of the first devices under its ATIV series of Microsoft Windows-based products.  It was shown at the IFA 2012 in Berlin and was the first Windows Phone 8 device to be officially unveiled, ahead of the Nokia Lumia 920.

Samsung Galaxy Note 4: The Samsung Galaxy Note 4 is an Android phablet smartphone developed and produced by Samsung Electronics.  The Galaxy Note 4 was unveiled during a Samsung press conference at IFA Berlin on 3 September 2014 and was released globally in October 2014.  It is the successor to the Samsung Galaxy Note 3, with the subsequent model unveiled on 13 August 2015.

Samsung Galaxy Note (original): The Samsung Galaxy Note is an Android smartphone produced by Samsung Electronics.  Unveiled at IFA Berlin 2011, it was first released in Germany in late October 2011, with other countries following afterwards.  The Galaxy Note was distinguished by unusually large form factor—later referred to using the term "phablet"—which straddled the size of the average smartphone at the time, and that of a small tablet: it features a 5.3-inch display, and is bundled with a stylus branded as the "S Pen", which can be used to navigate the device's user interface, and write or draw in supported apps.

Samsung Galaxy Note Edge: The Samsung Galaxy Note Edge is an Android phablet produced by Samsung Electronics.  Unveiled during a Samsung press conference at IFA Berlin on September 3, 2014 alongside its sister, the Galaxy Note 4, it is distinguished by a display that curves across the right side of the device, which can be used as a sidebar to display application shortcuts, notifications, and other information.

Samsung Galaxy Apps: Samsung Galaxy Apps, formerly known in feature phones as Samsung Apps is an app store used for devices manufactured by Samsung Electronics that was launched in September 2009.  The service is primarily shipped on Samsung Galaxy smartphones, Samsung Gear and feature phones (such as the Samsung REX and Duos) The store is available in 125 countries and it offers apps for Android, Windows Mobile and Bada platforms.  Apps from this store are updated by notifying the user via the Samsung Push Service, which has been installed in over one billion smartphones over the years.

Samsung Galaxy Spica: The Samsung Galaxy Spica, also known as Samsung Spica, Samsung GT-I5700, Samsung Galaxy Lite and Samsung Galaxy Portal, is a smartphone manufactured by Samsung that uses the open source Android operating system.  The phone is referred to as the successor of the Samsung i7500 and sometimes referred as Galaxy Lite.  Even though some of its features like the camera resolution, storage and data connection speeds are lower than the i7500 its processor's clock speed is much higher at 800 MHz.  It is succeeded by the Samsung Galaxy 3.

Samsung Galaxy S7: Samsung Galaxy S7 and Samsung Galaxy S7 Edge are Android smartphones manufactured and marketed by Samsung Electronics.  The S7 series serves as the successor to the Galaxy S6, S6 Edge and S6 Edge+ released in 2015.  The phones were officially unveiled on 21 February 2016, during a Samsung press conference at Mobile World Congress, with a European and North American release on 11 March 2016.

Samsung Galaxy Tab series: The Samsung Galaxy Tab (Stylized as SAMSUNG Galaxy Tab, previously Samsung GALAXY Tab) is a line of upper mid-range Android-based tablet computers produced by Samsung Electronics.  It is similar to the Samsung Galaxy Note series except without the Samsung S-Pen stylus.  The first model in the series, the 7-inch Samsung Galaxy Tab, was first introduced on 2 September 2010 at the IFA in Berlin.  Since then there have been several models released, including models with 7.7, 8.9 and 10.1-inch displays.  The Wi-Fi versions of the tablet all include a GPS system whilst the 3G/4G tablets include cellular capability as well.

Samsung SGH-T919: The Samsung Behold SGH-T919 is a touch-screen, 3G candybar-style mobile phone introduced by Samsung late in 2008.  The Behold is one of the first Samsung mobile phones released to have a touch-screen along with the Samsung Omnia, the Samsung Instinct, the Samsung Eternity, and the Samsung Tocco.  The Behold is the "American" release of Samsung Tocco, which is only sold in Europe, Asia and Australia so the features and design of both of these phones are similar.  Some of the Behold's biggest competitors were Apple's iPhone, T-Mobile G1 (HTC Dream), LG Dare, Samsung Instinct, and Samsung Eternity.  It was only available only to customers of T-Mobile.

Supporting paragraphs: Samsung WatchON Samsung Galaxy Note 4
Answer: Samsung Galaxy Note 4