S Voice

S Voice is a discontinued intelligent personal assistant and knowledge navigator which is only available as a built-in application for the Samsung Galaxy S III, S III Mini (including NFC), S4, S4 Mini, S4 Active, S5, S5 Mini, S II Plus, Note II, Note 3, Note 4, Note 10.1, Note 8.0, Stellar, Mega, Grand, Avant, Core, Ace 3, Tab 3 7.0, Tab 3 8.0, Samsung Galaxy Express 2, Tab 3 10.1, Galaxy Camera, and other 2013 or later Samsung Android devices. The application uses a natural language user interface to answer questions, make recommendations, and perform actions by delegating requests to a set of Web services. S Voice is based on the Vlingo personal assistant. For Galaxy S5 and later Samsung Galaxy devices, S Voice runs on Nuance instead of Vlingo.

Some of the capabilities of S Voice include making appointments, opening apps, setting alarms, updating social network websites such as Facebook or Twitter and navigation. S Voice also offers multitasking, as well as automatic activation features, for example, when the car engine is started.

In a disclaimer that pops up on first opening S Voice, Samsung states that the app is provided by a third party, which it does not name.

In the Galaxy S8 and S8+, Bixby was announced to be a major update and replacement to S Voice from the prior phones. It was discontinued on 1 June 2020.

Galaxy S

 * Samsung Galaxy S2 (including 2 Plus)
 * Samsung Galaxy S3 (including S3 Mini and S3 Neo)
 * Samsung Galaxy S4 (including S4 Active and S4 Mini)
 * Samsung Galaxy S5 (including S5 Active, S5 Mini and S5 Neo)
 * Samsung Galaxy S6 (including S6 Edge and S6 Edge+)
 * Samsung Galaxy S7 (including S7 Edge and S7 Active)

Galaxy Note

 * Samsung Galaxy Note
 * Samsung Galaxy Note 2
 * Samsung Galaxy Note 3
 * Samsung Galaxy Note 4
 * Samsung Galaxy Note Edge
 * Samsung Galaxy Note 5
 * Samsung Galaxy Note 7 / FE
 * Samsung Galaxy Note 8.0
 * Samsung Galaxy Note 10.1

Galaxy A

 * Samsung Galaxy A3 (2015, 2016 and 2017)
 * Samsung Galaxy A5 (2015, 2016 and 2017)
 * Samsung Galaxy A7 (2015, 2016 and 2017)
 * Samsung Galaxy A8 (2015, 2016 and 2018)
 * Samsung Galaxy A9 (2016) (including A9 Pro (2016))