All iPads Is Airplane Mode the same as turning off wifi? Which conserves battery better?

[HarryWarden]

When I am reading via the Kindle app or iBooks, which method is better for conserving battery: turning off Wifi or utilizing Airplane Mode?

 

[TJ61]

Turning off WiFi alone is actually worse, in general. That's because your phone will now use its cellular radio (higher battery consumption) for all its behind-the-scene communications.

OTOH, Airplane Mode turns ALL radios off. so this is the best way to conserve battery. You won't get any e-mail, text, calls, etc. either.

Regards,
Tom