This is the Troubleshooting page. You can use this to find the problem with your phone and the solution.
The Samsung Gusto 2 was released in May 2012. It is a flip phone featuring a 1.3 megapixel camera, media center, text messaging, mobile email, and bluetooth. The major components of this phone are the battery, camera, screen, and keypad.
Here is the Samsung Gusto 2 user manual
Here are some other guides people have created for more user problems Samsung Gusto 2 Guides