I have a memory card that I inserted into my phone, but I can't seem to figure out how to pull up the information that is saved on it. I tried turning the phone off, inserting it, and then powering it back on...but nothing happens. It's as if a memory card isn't even in there. The manual doesn't provide any directions on that. I can't retrieve my pictures, ringtones, nothing. What tab do I look under to pull this up?