Brand: Sanyo
The Sanyo ST-09 D is a smart phone model released by the Japanese electronics company Sanyo in the early 2000s. It features a triangle-shaped design, a 1.2 inch monochrome display, and supports GSM/GPRS connectivity. The ST-09 D also has a simple text-entry keypad, a calendar, and an address book with up to 128 entries. Additionally, it comes with an FM radio, a built-in vibration alert, and a 500 mAh removable battery. The ST-09 D is a basic entry-level phone, perfect for occasional callers or budget-conscious users.