thank you for the proposals. here are my very first feedbacks:
#1 - not this why - there is any symbol, and i do not like the red background + white text "tech" combination
#2 - too simple - there is any symbol - either abstract or concrete for mobile payments; black and red combination is fine; i am not sure about the bolds for "Mobile"...
#3, #14 - black and green - is fine; i am not sure about the bolds for "Mobile", the symbols - their pluses: simple, modern, fit well to the text; minuses: abstract - they do not solve the issue to be more concrete about our (mobile payment) industry