Another article point out that the base Galaxy S24, which also has 8gb RAM, is able to run Gemini Nano.
That said, I will point out that the base Galaxy S24 model comes with 8GB of RAM. Only the Plus and Ultra feature 12GB of memory. Google didn’t exclude the regular Galaxy S24 model from the list of Gemini Nano devices. Then again, the Galaxy S24 series features a much better chipset than the Pixel 8 phones. Maybe that’s what allows a device with 8GB of RAM to run on-device AI via Gemini Nano.