The Commissioner of Frontier Crimes Regulation (FCR), Munir Azam, reserved the verdict after hearing arguments by the defence and prosecution and is expected to deliver it next month.
Afridi's lawyers appealed against his conviction for treason for alleged links with the banned Lashkar-e-Islam group and requested the court to declare the sentence null and void.
The appeal further said Afridi should be given a chance to be heard by a 'jirga' or tribal council under the FCR, a British-era law.
Bin Laden was killed in the unilateral US military raid in Abbottabad, sending bilateral relations into a spin and embarrassing Pakistan's powerful military.
After a court in the semi-autonomous Khyber tribal region gave Afridi the 33-year prison term, he was held at the central prison in Peshawar.
Legal experts and rights activists had challenged the verdict. The US has been pressing Pakistan to release Afridi.