When you have two 
		nano SIM cards inserted on your phone, only one card can connect to the faster 4G LTE network. The other card will connect to the 3G/2G network. 
	 
 
	 You can set which card you want to connect to the 4G LTE network. 
	 
 
	 
 
 
	 -  
		  From the 
				Home screen, tap 
				. 
			  
		
-  
		  Tap 
			 Preferred data network. 
		   
		
-  
		  Choose the card you want to connect to the 4G LTE network.