so my damn iPhone 5 isn't getting calls and i have no idea i am getting calls until frustrated people curse me for not picking up on them. I wen to genius today and they told me the diagnostic shows low memory so that is the reason to why my phone doesn't receiver every call or alert me of a call even if my phone registers a missed call in my call log. they tol dme to do a clear install without restoring but i can't afford to lose my text messages as it is work related especially over a "fix" that we do not know is even the cause for me not receiving calls even though many MANY people have this problem apparently through online research. Any tips on how to A) save my texts than retreive it to my new "restored" phone and B) if this is even a logical reason? he claims its firmware related hence hte low memory. Does this sound right or just BS he threw my way?