The Vivo Y21d (6GB/128GB variant) is an entry-level 4G smartphone that stands out for its exceptional durability features, including an IP68/IP69+ water and dust resistance rating, and a very large 6,500mAh battery with 44W fast charging support. Durability: A major focus of the Y21d is its toughness, featuring a flagship-level IP68 and IP69+ rating for resistance against dust, rain, and short submersion in water (up to 1.5 meters for 30 minutes). It has also passed SGS Five-Star Drop Resistance and military-grade shock. Design: It features a slim design with a composite plastic back that has a matte finish to resist fingerprints. It is available in colors like Coral Red and Jade Green.