The Vivo Y91 was first made available for purchase in November 2018. It offers a 6.22” 720 x 1520 IPS LCD display, resulting in a pixel density of ~270 PPI. Processing power is supplied by a Qualcomm Snapdragon 439 chipset, which utilises an octa-core (4 x 1.95 GHz & 4 x 1.45 GHz) CPU, an Adreno 505 GPU and 2/3 GB of system RAM. Internal storage options are 32 or 16 GB, with both models fitted with a microSD card slot for further expansions. The primary camera has a dual 13/2 MP specification, the secondary is capable of capturing images at 8 MP. The 164g chassis is kept powered-up by a non-removable 4030mAh battery. Here members are free to explore the existing threads available for the Vivo Y91, which may include subjects such as ROM development, custom recoveries and rooting guides, or simply request general support for their device.