Review: Galaxy S 4 Active is a Samsung phone for folks who hate Samsung phones | Ars Technica
Inside Galaxy: Samsung Galaxy S4: How to Use It as a Flashlight in Android 4.4 Kitkat
Amazon.com: 2.1Amp Rapid Car Charger w USB Port Power with LED Flashlight for Samsung Galaxy S7, S6, Edge, Edge+, S5, S4, S3, Active, Galaxy Note 5 4 3 2 - LG G2