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Nearly 500 smartphone brands have left the market since 2017
(www.techspot.com)
This is a most excellent place for technology news and articles.
I feel like you have Apple, Samsung, Pixel as the big 3 (in the western world)
Then it's Xiaomi, OPPO (and it's subbrands), Motorola and maybe Nokia which are all just "cheaper alternatives" or as I think people think of them "android"
Then you have your niche phones like fairphone etc.
I see more tv ads for pixels than I do for galaxy phones.