19-year-old Liam Devois, from Manselton had been released from prison for an earlier drugs offences on 25 September 2025.
Swansea Crown Court heard that Devois came out of prison “with the best of intentions” and got a job with the council.
However after losing that job, Devois turned back to “the old crowd” falling under the influence of an “older and negative peer group”.
Police identified Devois during an unrelated investigation when his drugs-related messages were found on a mobile phone.
In March, officers attended his home address, during which quantities of ketamine and cannabis were found alongside numerous items of drug paraphernalia.
Devois’ phone contained evidence of him advertising drugs including cocaine for sale.
He has been sentenced to four years in a young offenders’ institution.
Detective Sergeant Luke Tucker from South Wales Police said: “Liam Devois’ involvement in the illegal drug trade has now cost him years of freedom.
“He has evidently not learned his lesson from his previous sentence for a similar offence.
“Dealing drugs does not pay. The only reward drug dealers will get is a good spell in prison.”
