Just laptop is good enough. Although currently switched back to apple silicon ATM for LLM, price and convince reasons, and as soonest linux on Apple Silicon reach some maturity, will switch over completely.

However not using a smartphone is probably good for one's mental and physical healthy now days. It is understandable if your work require you to have one, but if I'm not getting paid, why would I even get a smartphone?

Back in the 80's there are investment people managing billions dollars and deals over pen paper and a land line!