Sharp TM-150

hello all, I just got this phone and im having a VERY hard time tracking down pictures; after I take them, the only way i can access them is by either setting them as a background for my phone and setting them for a call ID picture, but no other way! How can i actually access my pictures without going through all that, to a point where i can rename them and have the option of deleting some that are wasting space? Please let me know ASAP! Thank you!