As has already been pointed out above she can quite clearly be seen using a smart phone in the colour photograph supplied. Well I don't mind telling you, and in no uncertain terms, I am now fuming and very much at the end of my tether! Why? (I hear you ask), because I put in a support call to her nearly 200 years ago and there she is blatantly chatting away to some supplier or other no doubt. Well, these difference engines don't just fix themselves you know, and yes, before you ask, I have tried, several times, dismantling and re-assembling the entire device and to no avail whatsoever!