Edit your photos Adjust and enhance images ANDROID TIPS
While uploaded images are enhanced to improve the detail, you can still add your own editing touches.
First, tap a thumbnail to open the image and then, at the base, tap the paintbrush. From here you can perform basic rotation or use the crop tool. The latter is ideal for removing parts of the image you don’t want. All you have to do is drag the circles to the desired crop location and then tap the tick icon to apply the change. Alternatively, if you tap the Filters icon, you can apply filter effects to the image or add subtle picture-style frames. When finished, tap the Save option at the top.
Source: Android Tips, Tricks, Apps & Hacks Volume 8 © 2014 Imagine Publishing Ltd