Have an iPhone 5C, and for the last month or more I have not been receiving audio alerts for text messages and some phone calls.  Have checked settings (correctly, I hope) and turned the phone off then back on.  Nothing has helped so far.  Not sure if this is a sign of the phone's age or just what.  Would appreciate suggestions.  Thanks!
	
		
			
		
		
	
				
			 
 
		