The term "Free Cell" is commonly used in two different contexts. 1) In the game of solitaire, Free Cell refers to a specific layout where cards are dealt at the beginning of the game. It is considered one of the most challenging versions of Solitaire due to its complex rules and strategy required to win. 2) Within the realm of mobile phone technology, "Free Cell" can refer to the ability to make calls or send messages without using any credits or having an active account. This means that anyone with a compatible device can use the available cellular network for communication purposes without incurring any charges.