Hardware and Performance
Under the hood, the Samsung A400 lacks any advanced features common in today's phones. It does not support data connectivity technologies like GPRS or EDGE, focusing instead on the fundamental capability of making and receiving calls on GSM 900 and 1800 bands. The lack of a card slot confines the phonebook to a maximum of 100 entries, segmented into five contact groups. Its call log is modest, maintaining records for only ten dialed, ten received, and ten missed calls.