Ms Otto and Mr Purkiss are facing trial in the Hobart Supreme Court accused with the alleged murder of Ms Otto's husband Dwayne Robert Davies.

Mr Davies was last seen on May 26, 2017, and his body was found a week later in a shallow grave at Levendale.

Both of the accused have pleaded not guilty.

Tasmania Police Sergeant Brad Conyers said an examination of Ms Otto's phone found sexually explicit images of a female were taken in July and October 2016.

The female in the images was not identified.

"There were certainly MMS that were sent around the time and date of the photos," Sergeant Conyers said.

Sergeant Conyers said it was not possible to know the content of the MMS messages sent from Ms Otto to Mr Purkiss.

Examinations of both Mr Purkiss' and Mr Davies' phones showed none of the sexually explicit images were saved on either device.

Sergeant Conyers said the analysis of Mr Purkiss' phone showed no evidence of the accused had set up a meeting for himself and Mr Davies to view motorcycles on the day the victim was last seen.

The Crown alleges Mr Purkiss lured Mr Davies to his Elderslie property with the promise of viewing two motorcycles being driven down from Campbell Town.

Earlier in the trial, the court heard evidence Mr Purkiss told witnesses after Mr Davies had looked up the registration of the bikes on his phone, and found they were stolen, the two men allegedly selling the bikes were turned away.

Sergeant Conyers said an examination of Mr Davies' phone showed he had not looked up any registration numbers and a search of a police information system revealed no bikes matching the description of those allegedly being viewed at Elderslie were reported stolen at that time.

An appeal to the public for information about the disappearance of Mr Davies was of "minimal" value to the investigation, Sergeant Conyers said.

Sergeant Conyers said information given to police by the public did not provide any other potential suspects about Mr Davies' disappearance.

Sergeant Conyers said he gave a press conference outside Mr Purkiss' Elderslie residence after it had been declared a crime scene on May 31, 2017, seeking through the media information from the public regarding several vehicles of interest.

Those vehicles were Mr Purkiss' white ute and Ms Otto's silver station wagon.

Sergeant Conyers said a member of the public phoned in information about a white ute near a dam at Broadmarsh.

"They'd seen the vehicle reversing strangely towards the dam," Sergeant Conyers said.

"The vehicle left when a person approached it."

Sergeant Conyers said he attended the dam and said there was no disturbance to the area.

After the Crown's evidence on Friday, the trial before Chief Justice Alan Blow adjourned until Monday.