Design and Build
The Oppo A57 sports a sleek and practical design that measures 163.7 x 75 x 8 mm (6.44 x 2.95 x 0.31 in) and weighs 187 grams (6.60 oz), making it comfortable to hold and use for extended periods. Its build comprises a glass front with a plastic frame and back, which is typical for phones in this price range. The phone comes equipped with dual SIM support that uses nano-SIM cards, and boasts IP5X dust resistance and IPX4 water resistance. Though not entirely waterproof, it offers a reassuring degree of protection against the elements.