My partner has an old iPhone 4 with a small crack in the screen that I want to use as an iPod touch.  It doesnt have a sim card in it anymore as this went into her new 4S and the battery is currently flat however I wondered if I charged it up, would it turn on and function without a sim card in it?  I think it was originally on t-mobile.  
Thanks in advance
	
		
			
		
		
	
				
			Thanks in advance
	
 

