Terry,
Thanks for sharing your thoughts. I appreciate it my friend.
My customer is a food distributor. His drivers delivers the food to each customers and then he need to record the delivery in their mobile phone offline. The order detail is not fixed and is purely on an ad-hoc basis and upon customer request once the driver arrive at the customer place to deliver. For instance, the driver may go to customer place to deliver 5 unit of a food item. But, the customer may change mind and ask for 7/8 unit.
thus, the driver must record such delivery in their mobile phone.
then once they return to office, they will sync with office pc to the desktop system.