Hi all. Okay, this is going to sound really strange... I have an iPhone 6S Plus that I use exclusively as stelth camera. (I have never used a cell-phone before, have no SIM card, and have no clue or desire to learn about or use mobile...) I'm not sure what OS I have, but it must be whatever came with the phone that I bought maybe 3 years ago. Love how I can take pictures nearly anywhere without people knowing. On to my questions... Because my goal is to be able to slip my phone out of my pocket, pull up, aim, tap, "get the shot" and slip my phone back into my pocket, I do NOT want to have to piss around with two fingers or two hands. I find it a horrible Ui design how I have to "pinch" in order to get the zoom control to appear, AND how this zoom control is right next to the menu where you select whether you you want to shoot a video, picture, etc. Often I seem to "miss the shot" because of this awkward design. Q1.) Is there a way to hack this design, or use a shortcut or something, so when I pull up my phone to shoot, all I need is my right thumb? Q2.) If not, are there other apps out there which will allow me to control the Zoom, Brightness, and Shutter all with my thumb? Hope that makes sense?! Thanks!