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Smartphone manufacturers still want to make foldables a thing
(arstechnica.com)
This is a most excellent place for technology news and articles.
I'm not aware of ones that will let me hold the phone by them - but I tend to not have major brand phones which I'm sure exacerbates this. I had a Xiaomi Mi 8 Lite for 4ish years, I just got a more mainstream OnePlus N30, so maybe I can look for a different case that has a keyboard in it, though I still doubt I could hold by it and double thumb type.