The court gave Alam, 29, who works at Covenant Nursery and Primary School located in Kpeyegyi Community in the FCT, an option of N25,000 fine.
The Senior Magistrate, Mr Oyeyipo Ademuyiwa, pronounced the sentenced after finding the accused guilty of the one-count charge of theft under Section 287 of the Penal Code.
Ademuyiwa based his decision on the testimony of the complainant, Mr Endurance Abode, who said the accused admitted stealing the phone during the trial.
Alam was arraigned on Jan. 17, by the police in Jikwoyi, a Satellite town in the FCT.
He had initially pleaded not guilty to the charge, but later changed his mind during cross-examination by the police prosecutor, Cpl Pascal Njoku.