The NEC N401i was a classic clamshell design which was popular when it was launched. It had a dual display with a small monochrome screen on the outside of the clamshell to alert users to notifications and who was calling.
The phone also featured a camera that could capture photos and videos.
A key capability was the ability to support i-mode services. i-Mode was a mobile internet service popular in Japan and some European markets, which provided access to email, web browsing, and various online services.
Key operators to range the NEC N401i included NTT DoCoMo in Japan and O2 in Europe, specifically in the UK where the operator was offering i-mode services.
It was also ranged by Bouygues Telecom who promoted its i-mode capabilities as a key feature for users looking for advanced mobile Internet services at the time.