Hi. Just got an iPad 2 and it's totally new to me. I also got a Bluetooth keyboard to go with it. Should i leave the Bluetooth turned on all the time on the iPad or will it drain the battery? I have been turning it off but it's a pain to have to go into settings all the time to turn it off and on so is there a widget (yes, I come from android) or icon or something I can put on my home screen to simplify turning off and on? Thanks.