Same problem as a lot of others however, not as phone savy as most...i have the biggest sd card for my phone (Samsung Galaxy S5) older I know. But my internal storage is full i can no longer update certain apps, storage spaces is running out. However my Sd card is only 2% used w some pics on it. Idk how or what the "Marshmallow" thing is nor can I find any "dots" next to my sd card when I get into my settings. So please with that information help me. Idk if you have to look my phone up or what but im begging someone...anyone have patients with me & help me. Thank you in advance.