Vivo is a Chinese smartphone manufacturer headquartered in Dongguan, China. The document discusses common problems with Vivo phones such as connectivity issues with Bluetooth, apps crashing, mobile heating, and poor battery life. It provides solutions to these problems, including turning Bluetooth on and off, clearing app caches and data, deleting junk apps, and adjusting settings. The conclusion states that while Vivo phones may not be as effective as others, they create brand awareness through their affordable price and fun features.