Hi guys! 
many people want to know what is the diff. between Line#1 & Line#2. 
if u select Line#1, u can normaly do everything like phone calls , SMS, using  
R-World, R-Connect,etc. 
but if u select Line#2, u can not use R-World and R-Connect. 
when u try to open anything in R-World, it will give u error.