First, you need tiny screwdrivers (straight-edge and hex). You need a tray with compartments to keep your screws in order. Also needed is a clear workspace with good light.
So far, so good. Of course there's more to the story.
Before reassembly, the phone was powered up. It worked! Unfortunately the screen displayed all white. Being able to get quality parts is important.
Throw it out and buy a new one just because the screen display needs replaced? What a waste!
Resurrected the ol' Nokia cinderblock phone. Unfortunately for my pay-as-you-go needs, its "zero" button doesn't work. I had to bus to the mall's T-Mob kiosk to make a payment. While there I asked about repair of my slider phone. The sales rep referred me to Clear Coat's kiosk. That link led to iFix2Go and a great conversation with cell phone repair technicians Tracy and Kevin.
iFix2Go specializes in repair of Apple products -- iPhone, iPad, iPod Touch -- but also can do other brands. Tracy was amazed at the simplicity of the slider phone's integrated, plug-and-play screen (compared to the "smart" phones). They can even fix the "zero" on my cinderblock, and told me how. They were helpful, friendly and professional.
Based in Harrisburg, iFix2Go has a second store in Towson (Maryland) Town Center. They've been at the Park City mall location about two years. AS IF my dear T-Mobsters didn't know!