Samuel Nabarrete, 24, pleaded guilty Friday to charges of invasive visual recording and received 5 years probation and 100 days in jail.
Nabarrete was arrested back on April 26, when police obtained a search warrant for his phone.
Odessa police believe there were at least 20 victims after photos of 19 children were found on his phone.
Investigation started after a police report was made in January. According to the arrest warrant, a mother said she was shopping at Walmart when Nabarrete was working. The woman said Nabarrete knelt down next to her daughter, 8 and that his phone was positioned in a way that it appeared he was taking photos of the child's private area.
District Attorney Bobby Bland says more victims can still come forward to police, but he he cannot promise further prosecution.