This is the phone that a thug had squirreled away in his Oxfordshire jail cell.

Kayden Williams’ small ‘brick’ phone was discovered during a search of HMP Bullingdon cell in February, carried out while he was at court.

The 19-year-old was convicted of assaulting two teen girls, having punched one of them in the face.

He was later jailed for four-and-a-half years for causing grievous bodily harm with intent.

Oxford Mail: The mobile phone found in Kayden Williams' mobile phone Picture: CPSThe mobile phone found in Kayden Williams' mobile phone Picture: CPS (Image: CPS)

READ MORE: More jail time for inmate who had mobile phone in custody

Last week, Judge Michael Gledhill KC handed the fresh-faced inmate a further eight months for having the contraband phone behind bars.

Williams was not at court to hear his sentencing remarks, having refused to leave his cell at Feltham Young Offenders’ Institution and make the 50 mile trip down the M40.

The Crown Prosecution Service has now shared an image of the phone found in Williams’ cell.

Oxford Mail: Kayden Williams' mugshotKayden Williams' mugshot (Image: Thames Valley Police)