So I won an iPad Air 128GB so I basically stopped using my iPad 1 because Apps would crash every 5 seconds and it was annoying as hell
My housemate smashed my iPad Air (god knows how) when she was picking things up so I had to go back to my iPad 1. It was flat as, but I did a full recharge that took all day, but so far it's been over a week and it's still at 30%

I've been watching BBC iPlayer and playing music, as well as using Spotify and Safari, and it's just amazing.
My housemate also bought the Lumia 530 and she gets 4 days on average out of it, and she's on Facebook or Texting all the time.
Do you know any devices that have incredible battery life?