Old-school keypad · new-school chain
Text like it's 2003.
Trade like it's now.
t9 rebuilds the classic multi-tap predictive keyboard as a real flip phone in your browser — press the numbers, watch the trie guess your word, and hit dial to get a real human on the line at Robinhood support.
How the keypad thinks
Same trie-based prediction logic that shipped on real T9 handsets, rebuilt for the browser.
One key per letter
2 is ABC, 7 is PQRS — press each key once per letter and the dictionary guesses the whole word for you.
Cycle for alternates
Wrong guess? Hit cycle (or the * key on your keyboard) to step through the next best match.
Space, then keep going
Tap space to lock in a word and start the next one — just like texting on a real keypad.
Try 7-6-2-4-6-4-6-6-3 — that's ROBINHOOD on a real keypad. The screen will flag it the moment it's typed.
A short history
T9 means "Text on 9 keys," built by Tegic Communications in the mid-1990s and later owned by Nuance.
It shipped on Nokia, Samsung, Sony, and Siemens handsets through the late '90s and 2000s, replacing slow multi-tap typing.
When a guess was wrong, users pressed a dedicated Next key — usually * — to cycle to the next candidate word.
What is t9?
t9 is a community token trading on Robinhood Chain, an Arbitrum-based EVM layer 2, and swapped through Uniswap. This site is the project's community tool: a fully working T9 predictive-text emulator, styled as a physical flip phone, with a direct line to Robinhood's real support desk built into the keypad itself.
The Robinhood theme is a nod to the chain t9 lives on. Nothing on this page is financial advice — do your own research, check the chart, and only risk what you can afford to lose.
Find t9 online
Follow the community and track the chart.