Memory and Performance
Internally, the D820 featured 73MB of storage, supplemented by a microSD slot, providing room for media and other data. It also came with a dedicated 4MB space for Java applications, underscoring its emphasis on diversified usage. The phonebook could store up to 1000 contacts with multiple fields, reflecting its orientation towards both personal and professional use. Although not designed for multitasking or intensive applications, it supported basic and moderate mobile operations smoothly enough for the period.