I got similar message - found the SD card had come unplugged
IDK, maybe you need to turn it off and then turn it back on again so it can reset itself.
Mine did that. I couldn't take any pictures until I put a memory card in it. Even though the memory on the phone had LOADS of space. Really annoying.
When I first got the phone it allowed me to take a few pics, then this issue turned up. Even after deleting EVERYTHING on the phone, it still wouldn't allow me to use the phone memory for image storage.
Had the same issue. Facebook was the culprit. Its a memory *****.
Try going to factory settings and the crap might vanish
BECAUSE ITS CRAPPY!!!
you're phone is ****, but mine is too so don't worry
it just wants your love