Walmsley, of no fixed address, pleaded guilty to two offences of breaching a Sexual Offences Prevention Order (SOPO) and two offences of making indecent images of children.
The court heard police had challenged the defendant on June 19.
Prosecutor Nigel Booth said: “He told police he did not have his telephone with him but it was at the hostel where he was living.
“He was asked again if he had a mobile phone in his pocket. He said he hadn’t. He tried to run away. He was detained and a mobile was recovered from his pocket. The phone was analysed by the police and 28 indecent images were recovered of which six were accessible.
“The police then turned their attention to a different mobile phone which was seized in November after the defendant’s arrest for an alleged breach of a SOPO.
“They found the internet history had been deleted between August 9 and 10, 2016. There were a number of searches on You Tube which had been deleted. There were a number of indecent images of children – seven accessible category A images, five category B and 97 at category C.”
Recorder John Butterfield QC placed Walmsley on the sex offenders’ register for life. He revoked the SOPO and made him the subject of an indefinite Sexual Harm Prevention Order (SHPO).
The judge told Walmsley: “The indecent photos included images of penetrative behaviour. The offending is gravely aggravated by your antecedence.”
June 2018:Dean Walmsley, who lives in Newcastle, was arrested on Tuesday.
A Staffordshire Police spokesman said: “Dean Walmsley, aged 27, from Newcastle-under-Lyme, was charged with breaching a Sexual Harm Prevention Order and making indecent photographs of a child.
“Walmsley was due to appear at North Staffordshire Magistrates Court today.”
Pervert jailed after being caught with indecent images of children
Leek pervert Dean Walmsley is behind bars after being caught with more than 150 indecent images of children on his phone.
The 24-year-old, who has several previous convictions for sexual offences including sexual assault and exposure, was arrested after police spoke to him about an unrelated matter.
They took his mobile phone and found 150 indecent images of children at category C and seven at category A – the most serious.
Now Walmsley has been jailed for 18 months at Stoke-on-Trent Crown Court.
Prosecutor Neil Ahuja said police visited a hostel where Walmsley was staying on November 18 as they wanted to speak to him in relation to an unrelated matter.
Mr Ahuja said: “The defendant’s phone was taken from him.
“It was found to contain indecent images – 150 at category C and seven category A still indecent images of children.”
The court heard the children were as young as eight.
In his police interview Walmsley admitted searching for and looking at adult pornography. He said he deleted the images of children and denied having any sexual attraction to children.
Walmsley, of no fixed address, pleaded guilty to two charges of making indecent images of children.
Nicola Bell, mitigating, said Walmsley felt he was making progress on licence following his last prison sentence.
Ms Bell said: “He was downloading a lot of adult porn at the time.
“This is not an escalation of seriousness but is still indicative of the flaws in his character.”
Recorder Andrew Easteal made Walmsley the subject of a five-year Sexual Harm Prevention Order and placed him on the sex offenders’ register for 10 years.
The judge told the defendant: “It was clear that you had access through the internet to a large amount of adult and legal porn. However, there were also images that are illegal.
“The category A images were of naked adults and children having sex with each other.
“It is because people are prepared to access the images and look at them that the children are abused and the images are posted on the internet.
“That is why the courts take the images so seriously.”
Recorder Easteal acknowledged that this offending was not as serious as some of Walmsley’s previous matters.
He added: “It is very worrying and troubling that a man with your history is now convicted of these offences.”