3 storage locations? i have a boost maxx, I get the insufficient storage error.  I noticed when I looked at the storage  that there are 3 storage locations, i'm confused shouldn't there only be internal and external storage?  my phone shows internal storage, total space 1.49 available 233mb, then it shows phone storage total space 4.08 available 3.82 and then my sd card.  is this normal?
I'm guessing you've got a 8gb phone (out of the box you get available 5.5gb).
Out of this 5.5gb it is partitioned into 1.5gb( / root ) and 4gb (internal storage sdcard0 )
/ Root storage is where apps you install is stored.
Internal storage is where appdata and gamedata is stored
You can also keep your files here.
Third location is sdcard1 or external sdcard 

You can learn more about it here