A Nikah was performed over a cell phone.

Answer

The Nikah which is performed telephonically is not valid. The witnesses do not hear the Ijaab (Proposal) and Qubool (Acceptance) in the same majlis (session/venue). The Ijaab is stated in one part of the world while the Qubool takes place in a different part of the world thousands of miles away. Furthermore, the witnesses sitting thousands of miles away have no certitude regarding the person who is stating the Ijaab/Qubool on the other side. It is quite possible for unscrupulous modernists, or persons bereft of Deeni conscience to play the Ijaab/ Qubool from a cassette/recorded player.

The brother who has 'performed' 'nikah' in this manner should ponder on the gravity of the matter. It is a matter of living in zina and producing illegitimate children. It will take only five minutes to perform a proper Nikah. He requires only two witnesses to listen to the Ijaab and Qubool. Caution demands that he again performs the Nikah.