iPhone 5 - Old Texts Disappeared/Blank

Hi everyone,

So just this past day or so, I noticed that all of my old text messages over 1 month old still show the Sender(s) in my Messages list, but the contents of each Entry are just BLANK!! There are no text message bubbles whatsoever in any of those entries. The cutoff date appears to be February 4 or so.

I've also noticed that Old Text Messages in my common contacts have disappeared beyond that date as well.

I haven't done anything weird with my iphone or done any recent updates or anything. What is wrong??

Thanks,

Steve