Can I use a 5V 2.4amp charger on my device that requires 5V 2amp?

Question: Can I use a 5V 2.4amp charger on my device that requires 5V 2amp? 

Answer: Yes, Since the voltage is held constant (5V), the only factor that determines current draw is the load the device places on the charger. The device will only draw as much current as it needs and no more.