This seems simple enough

According to The Guardian, which covered the story earlier this week following the court’s first hearing on Monday, Atlanta resident Samuel Tunick is fighting the charges. Tunick’s attorneys said that it was unlawful for U.S. Customs and Border Protection to seize his phone as he arrived back in the U.S. last year and that any evidence — including the alleged wiping of his phone — should be thrown out.

Also for context, the resident was targeted for connection to protests

https://www.theguardian.com/us-news/2026/jul/23/cop-city-protester-phone

The US Department of Justice is attempting to prosecute an Atlanta resident in connection with the movement against the police training center known as Cop City because he had GrapheneOS on his phone, an open-source operating system that enables users to enter a passcode and wipe a phone clean.

The defendant, Sam Tunick, was stopped for interrogation at Atlanta’s Hartsfield-Jackson airport on 24 January last year, after vacationing in the Dominican Republic. Unbeknown to him, federal authorities had put him on a terrorism watchlist because of his alleged association with the movement against Cop City.

Opposition to the $109m police training center, which opened last spring, came from a wide range of local and national organizations and protesters, centered on concerns around police militarization and clearing forests in an era of climate crisis. Atlanta police said the center was needed for “world-class” training and to attract new officers.

Several state attempts to prosecute Cop City protesters have foundered in the last several years, while this is the second recent federal effort, after the justice department announced another indictment last month.