what is best way to reserve battery life on an airplane?

[iMore Question]

what is best way to reserve battery life on an airplane?

 

[Just_Me_D]

Put the device in Airplane mode. If the plane provides Wi-Fi connectivity, you can still use Wi-Fi while in Airplane mode.

 

[Bigeric23]

They way I do it is not to use my device. Instead . . . I just irritate the person next to me by initiating a conversation.