"Wala pong sinasabi nating mga sophisticated equipment, your honor. Kahit hindi. Nangyari lang po ito dahil sa pakikipagtulungan o sabwatan ng mga member doon sa mga service provider (There are no such thing as sophisticated [wiretapping] equipment, your honor. [Wiretapping] was made possible with the cooperation of some members of service providers)," Doble said.
Doble said Rebong gave MIG-21 members Nokia 3600 units that have capability to eavesdrop on phone conversations of "target personalities."
He explained that each Nokia units have memory SIMs (Subscriber Identity Module), where the bugged conversations are automatically recorded. He said the conversations recorded on the SIMs were then downloaded to a computer and then transcribed by an agent.