Bring back the Sidekick! Ayaneo Slide is probably the closest to this today. Would love to see a smaller version of it running on Windows on ARM-based Snapdragon processors.
Before the iPhone, before Android, before webOS, a revolutionary soap bar of a phone made it incredibly easy to get shit done. The Danger Hiptop, better known as the T-Mobile Sidekick, made the internet portable and affordable like no phone before.