I am trading from past 10 Years and I feel all smart phones with above 2GB RAM are best for trading.
However, I prefer android phones of the above configuration, I traded with many mobile phones and my best experience was with MI MAX 2
I have given Below link to Buy it, this phone screen is so big graphs can be appropriately seen, RAM and ROM are very with 5300Mah Battery which runs completely 12+ hours full market hours online with internet. On standby it comes approx 14 Days.
Mi Max 2 – Buy Mi Max 2 (Black, 64 GB) Mobile Phone Online at Best Price in India | Flipkart.com
Additionally, good amount of internet speed is required, Live streaming of stocks and Last Traded Price ( LTP) to be captured faster. With my experience If i need to mention the fastest trading application then my choice goes to Ventura’s Pointer APP which is Lighter and Faster. Even Zerodha latest version Kite 3.0 is also fast too.
However, remember to choose Discount brokerage firm for trading, Zerodha is one of the Best and India’s No.1 Stock market Firm. Please read this article review by me, hope it helps you. REVIEW of ZERODHA