Read about Vivo Y400 5G key features, price in India, full specifications, expert reviews and get the best exchange price exclusively on Cashify. Choose from the best brands of smartphones, feature phones & landlines. Buy now Please visit the nearest vivo Service Centre for product-related issues. Further support will be provided by the brand at their service centre as per their warranty policies. vivo Y400 5G Android smartphone. Announced Aug 2025. Features 6.67″ display, Snapdragon 4 Gen 2 chipset, 6000 mAh battery, 256 GB storage, 8 GB RAM, MIL-STD-810H compliant.