Suu Kyi looked in good health and held a face-to-face meeting with her legal team for about 30 minutes before the hearing, lawyer Thae Maung Maung said.
Suu Kyi, 75, who won the Nobel Peace Prize in 1991 for her efforts to build democracy, is among more than 4000 people detained since the coup. She faces charges that range from illegally possessing walkie-talkie radios to violating a state secrets law.