Memory and Battery
Internally, the device offers a limited storage space of 60MB, which can be expanded through a microSDHC card slot to accommodate additional files or applications. It holds 1000 contacts in its phonebook and supports photocall, making it adequate for basic contact management and personalization. The GT405 is powered by a removable Li-Ion battery, which offers up to 260 hours of standby time and a talk time of approximately 3 hours and 30 minutes, typical for feature phones of its time.