There was a software update for the Extravert released in January which addresses, among other things, the memory issue. My impression is that the update is for both the postpaid and the prepaid Extraverts. Here's a link with a post from an LG employee:
I've read comments from at least two customers who said that the update resolved their memory issues:
"I download[ed] the update on my computer and transferred it to my phone with the verizon lg software updater if that helps"
have upgraded my phone software. I deleted the "language" files freeing up more than 5 MB of memory but I still cannot access mobile web, apps, etc. I have a LG vn271 (extravert pre-paid) verizon. Brought it 2 months ago and started having problems accessing web a week ago. Had the "not enough space, delete files" message but that message has gone away but still cannot access mobile web or even the apps menu. No problem with txt or calls (so far).
I've also been having problems with the Extravert 2. I just ran across what appears to be a software update dated 8/20/2014, here:
Hopefully, this is the fix we've been waiting for!