How come my LG Optimus tells me I am out of memory to do simple things like text message or FaceBook but other times it does not?

by on February 12, 2013

Q: sometimes I can’t text. It gives me a message that I’m out of memory. This morning I couldn’t open my FB but now I can. I can also text now. I don’t understand why I’m getting this message when I have 3.69GB of total space available. I also don’t understand why sometimes I can text and open FB and other times I cannot. I have service through Bluegrass,
Her Phone is a LG Optimus