The phone was handed in to police on August 21, as well as the phone's micro SD memory card.
"The true picture became clear and the nature of the police investigation into the defendant changed."
Further police inquiries uncovered girls' underwear at Woods' address and analysis of the phone found it had been used to access websites and save objectionable publications.
In total, the phone and SD memory card contained 5545 images. Of those, 1084 depicted child sexual abuse and exploitation, and 2452 were computer generated animated images depicting child sexual abuse and exploitation.
When arrested Woods described the images as "sick" and admitted he knew it was illegal and wrong to possess them.
Woods was also charged with committing an indecent act on a girl under 12 after a young complainant was identified from an image on Woods' phone.
On four occasions, Woods had got into bed with the girl, touching her arms, legs, back, stomach, thighs and bottom.
In sentencing, Judge Tony Snell said Woods must be held accountable for his actions and "understand the wrongfulness of what you have done".
"Given your remorse you have a low likelihood of reoffending, but are of high risk of harm to others, especially people under 16 years," Judge Snell said.
He said Woods had been willing to undertake rehabilitation to stop reoffending.