Hands Holding a Phone with a Green Screen on the Train

green device screen chroma key using phone screen partition mobile app mobile phone smart phone train text messaging photo messaging backgrounds 4k projection screen colored background vehicle interior information medium human hand entertainment communication wireless day economy hand equipment entertainment occupation human arm banking telephone arts entertainment event poland currency paying human limb finance limb culture young adult white adult adult student women caucasian gripping indoors surfing the net holding adults only leisure activity 30-39 years body part 40-49 years arms raised leisure facilities young men enjoyment 20-29 years screen actors guild relaxation