SMS has a 160 character limit, and Twitter was originally supposed to be SMS driven. I personally don't know anyone who has ever Tweeted via SMS though, or whether that is still even possible.
I used it on an old Moto Razr for a while back in college when that was my daily driver. Address is still in my phone copied from SIM to SIM to Cloud (shortcode 40404).
On an old iPhone with just basic speech to text abilities I would sometimes use Bluetooth to "text twitter ..." and that worked. (Nowadays we got our Siris and Cortanas and direct app integration, but that "text twitter" is still sometimes a more reliable voice trigger than "tweet".)
I still often turn on SMS notifications for accounts I want to specifically hear from or events I'm attending.
On an old iPhone with just basic speech to text abilities I would sometimes use Bluetooth to "text twitter ..." and that worked. (Nowadays we got our Siris and Cortanas and direct app integration, but that "text twitter" is still sometimes a more reliable voice trigger than "tweet".)
I still often turn on SMS notifications for accounts I want to specifically hear from or events I'm attending.