How to Change Any App Icon on Android Device
Step 1. Download and Install Awesome Icons.
Step 2. Launch it and go directly to the section ‘Get more icons’ menu (which opens by sliding your finger to the right from the left edge of the screen).
Here, a selection of packages is offered, but you can find even more, whether free or paid, by clicking the option Search the market.
Step 3. Go to ‘Quick Start’.
Step 4. Click the icon you want to change and then in the next window click on OK.