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				Cell phone powers itself down.
			 
			
			I have an AT&T cell phone with a SIM card.  Problem occurs with multiple phones, only constant is the SIM card.   
		
	
		
	
			
				Would a defective card cause them to power down at it's whim? Specifically just after sending a text......other times just sitting on a desk with no activity. Battery is fine..... 
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	1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel  | 
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			 Registered User 
			
			
		
			
				
			
			
			Join Date: Jan 2013 
				
				
				
					Posts: 1,724
				 
                
				
				
				
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			How to Determine if a Cell Phone SIM Card is Damaged | eHow 
		
	
		
	
			
			
				
					I would take the phone to the nearest retailer and have the sim card checked. 
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	bunch of random cars and bikes.  | 
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