I can't find my adapter, but I vaguely recall it does work. I think they say it lowers the battery life some, but I think marginally. I was looking into it to plug something with volume control to turn pages...have not manage to test it...though I know one must pay attention since apple and android use different connections.

I don't think so. I have it read to me via loudspeaker or Bluetooth headphones to improve my Portuguese pronunciation

If it works on other mobiles then it also works on Palma. It's like a normal mobile. It just has an e-ink screen and is a little slower.