I would like to be able to download apps directly to my SD card. I found some instructions online on how to set this up without "rooting". If you are familiar with the process I would appreciate some help. I got to the part where you are supposed to type the command "adb devices" but my phone does not come up. Why is this and what can I do? I would appreciate if you had a link to a troubleshooting page that already addressed this as well.