[Tex/LaTex] Bullet points and sub bullet points (Items and subitems)

Question

Just having some issues with some items and subitems on latex this is how it looks at the moment:

{\begin{itemize}

    {\item \textbf{TEXT}} 
        \subitem {TEXT \textit{TEXT}TEXT}
        \subitem {TEXT \textit{TEXT},$\Phi(\lambda$)  
         \textit{TEXT}}
\end{itemize}

It doesnt bring up subitems, It says (! Undefined control sequence.) for each subitem. any ideas?

Answer 1

Just nest itemize environments:

\documentclass{article}

\begin{document}

\begin{itemize}
    \item \textbf{TEXT}
          \begin{itemize} 
            \item TEXT \textit{TEXT} TEXT
            \item TEXT \textit{TEXT},$\Phi(\lambda$) \textit{TEXT}
          \end{itemize}
\end{itemize}

\end{document}