Thanks everyone. I cant wait to find out how everyones turns out!
Darrin – The S5 and I think the S4 have the speaker at the bottom right when the screen is facing you. The S6 has it on the bottom edge, similar to the Iphone. For the phones with the speaker in the top left like the S3, you could make a larger design, or try going longer and placing the phone on its side in the cradle.
Thanks again, and have a great day!