This is a great question. Each device comes with an instruction manual in the box when you purchase. You can also check the manufacturer's website for an online instruction manual too. I hope this helps you.

Hey crazylegs.
This is an interesting question. The J3 does have a flashlight feature built right into the phone. To access this feature, you will need to be swipe down from the top of the screen until the quick menu comes down. In this menu, there will be mini icons in a row on the top, swipe to the left until you see the flashlight icon. If you tap this icon, the flashlight will turn on. To turn off the feature, just tap the icon again. As for an oral GPS or a voice activated question service, I would suggest the use of the Google Search widget. This is an option that can be put right on your home page through the use of a widget. To install this widget onto your home screen, you should press and hold a blank part of the home screen until a row of options appears at the bottom. From this row, you can choose "widgets." In widgets, you can choose the Google Apps widget collection and then press and hold the Google bar that has the microphone on the right side. You can tap the microphone to talk to the app and ask to give you directions to a location or it can be used to answer a question you may have. I hope this helps.

I know a back and forth like this can be frustrating, cindysaunders12. The Gear VR isn't compatible with any active series devices. This particular Gear VR model is only compatible with the Galaxy Note5, Galaxy S6 edge+, Galaxy S6, Galaxy S6 edge, Galaxy S7 and Galaxy S7 edge. I hope this clears up the confusion.

This an interesting question, Parker. The charger does not need to be synced with the device in order for it to charge. The device does, however, need to be wireless, fast charge compatible. Because your phone has liquid damage, there is not guaranteeing that this would charge your device. I hope this answer helped.