A smartphone integrates a camera, a phone, a gps device and internet as well as being a phone and enabled communication by text, video and audio.
A device that combines all of this may have existed before but they failed in the fight for adoption by the masses. Innovation is theorized:
https://en.m.wikipedia.org/wiki/Diffusion_of_innovations
What you need to make inventions into innovation is to make it accessible to people who expect products to just work. Innovation always faces resistance. The people who don’t want any change will always fight new stuff while early adopters will always try new things. The people in the middle are key. UX is a big part but also hardware and software that works without the need for tinkering is essential.
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