I just got back from WDW last week. We flew Delta and I was reading on my ipod touch ... I had wifi off (I always do) and the flight attendant made me turn it off. She said it's an electronic device and didn't matter if I was only reading. Maybe as the ereaders become more well known we won't have to do that?
Well, the touch is at heart a tiny computer, right? (going by the apple page of what is an ipod touch) So it would make sense that she wouldn't know what you were doing or how you were doing it. You could easily have been texting or emailing.
And was it just during take off/landing?
We won a Kindle in a raffle. I don't know all of its features so I can't answer all of your questions. However, the battery charge lasts for at least 5 hours, maybe more.
5 hours is definitely not normal.
If your kindle is one of the earlier kinds, and you have an
amazon kindle case with straps that go on the top and bottom side, DH (kindle product tester) has noticed that the bottom elastic strap actually presses down on the "wheel" button. Which then drains the battery. He ended up getting some sticky-back velcro to secure the kindle in the case, and only uses the top elastic.
So that's a possibility, if you have that device and that case.
Yes, you can use it on a plane.
When they say turn off wireless devices, you can turn off JUST the internet, and you can still read a book that's already downloaded. That's no different from listening to music that's already on your ipod or using word processing on your computer. What they care about when they say "turn off electronic devices" is that you're not sending/receiving signals electronically.
I have always taken electronic device to mean ANY electronic device. I would not listen to my walkman, discman, mp3 player, I won't let DS play his leapster, either. I have never noticed FAs making a distinction between if something has wifi or not; it's just all electronic devices. That's been my understand and experience with it. So to me, it's absolutely normal to turn it ALL off, have NO use of anything like that, for takeoff and landing, until they say it's OK.