So, i bought handy light on a whim after i saw it posted... but i have a few questions about it..? 1) I noticed that the app stays on (ie: lit up), which could sig. drain battery life, can i lock the phone, so the screen is off, but the app still tethering??? 2) Does it not background? will there be an update for backgrounding?? im new to iphones and this stuff. Thanks!