Looking for a smartphone with insane battery life under budget ? In this video, we review the Vivo Y31d, a battery-centric phone featuring a massive 7000mAh battery with 44W fast charging. Apart from battery, the Vivo Y31d offers a 6.75-inch 120Hz display, 50MP camera, and runs on a Snapdragon 6s Gen 2 chipset. It also comes with IP68 & IP69 rating, making it durable for everyday use. But is it the best phone under NPR 30,000? Watch the full video to find out!