Suppose you open your phone's app drawer, and the gallery app is missing. Before you panic, it isn't gone forever. Your device's native photo app is a permanent fixture on your device. 1. To bring the app back to your app drawer, head over to your device's settings. 2. Tap on Apps, then filter by Default Apps. 3. Scroll through the list and tap on your gallery app. 4. Next, tap Enable.