Sad to see no mention of the Motorola Q (1) which I got in 2006. My first mobile phone was also my first ‘smartphone’ with a full keyboard. I didn’t have any cellular service (I was a child) so I downloaded a ~2gb package with 350,000 text-only Wikipedia articles onto a MiniSD card (before microSD!), and that kept me endlessly occupied.
I still have that device, quite possibly my oldest possession. Maybe one day I’ll find a way to get it working.