Raynald Francois surrendered to police on Tuesday.
Philadelphia police responded to the 2200 block of South Felton Street on June 8 after an unresponsive male was found with a gunshot wound to the head, hip and back.
He was taken to Penn Presbyterian Medical Center, where he was later pronounced dead.
The victim was identified as 17-year-old Zaafir Jerry, according to police.
Police said they found 12 9mm shell casings and a weapon at the scene.
Francois has been charged with murder.